Your SlideShare is downloading. ×
0
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
5   cired2013 planning of power distribution systems
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

5 cired2013 planning of power distribution systems

1,209

Published on

Published in: Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
1,209
On Slideshare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
Downloads
44
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Jasper FruntMay 8th 2013CIRED 2013NL Preparation
  • 2. CIRED 2013May 8th 20134 Subjects from special report Risk assessment and asset management- Risk assessment- Reliability assessment Network development- Innovative Power Distribution- Active Networks- Smart Grid Systems and Applications- DC Distribution Systems Distribution planning- General Planning- Automation and Reactive Compensation Planning- EV Accomodation Planning- Distribution Planning in the Era of Smartgrid Methods and Tools- Load Modelling and Profiling- Load Forecasting2
  • 3. CIRED 2013May 8th 20133Paperoverview
  • 4. CIRED 2013May 8th 2013Paper overview 121 papers 7 from NL 83 reviewed- 34 do read- 30 read for specialists- 18 do not read- 1 paper not present4
  • 5. CIRED 2013May 8th 20135Paperevaluations
  • 6. CIRED 2013May 8th 2013Reviewers from DNV KEMA Gabriël Bloemhof Roger Cremers Gerben Dekker Harold Dijk Jasper Frunt Evert de Haan Peter Vaessen Michel Verburg Yongtao Yang6
  • 7. CIRED 2013May 8th 2013Review options Advise to read is given by one of these symbols. Relevance for NL indicated by: Authors from NL7JKL
  • 8. CIRED 2013May 8th 2013General typical observations Gabriël (his share of papers) Quality of papers seems to increase (Just a few bad papers).- Topics vary from very practical isolated single case studies to very broad theoreticaldiscussions- The intermediate ones are most interesting, applying tough theory to harsh practice. Very few papers from multiple countries- Meaning for international cooperation? Dutch papers rarely refer to related or even similar neighbors utilities activities- Meaning for national cooperation? Methodology trends continue- More awareness about limitations of “conventional” ways of planning or operation.- More attention to newer methods, including optimization, probabilistics, …- No new standard or tool emerging already yet8JJJJJJJ
  • 9. CIRED 2013May 8th 20139J
  • 10. CIRED 2013May 8th 2013101. Risk assessment andasset management
  • 11. CIRED 2013May 8th 20130208 Risk analysis of alternatives to N-1 reserves in a network with large amounts ofwind powerBollen, Chen, Etherden, SWEDEN This paper is about local straightforward alternatives to N-1 reserves whenconnecting a wind farm to the grid And it is about how these alternatives affect the actual produced wind power. Innovations are the simple and elegant way of solving the issue. A technical risk of DNOs is transferred into an economic risk for wind farm owners. Conclusions are that although more research is needed, when N-1 can becircumvented some of the problems surrounding wind power are not relevantanymore.11J 
  • 12. CIRED 2013May 8th 20130307 Investing In The Future: Long-term Optimization Of Asset Replacement In TheCollective Regional Electricity Grids Of The NetherlandsBrouns, Poorts, (Enexis) NETHERLANDS Paper presents results of a study on the effects of asset ageing on the reliabilityand affordability of the collective regional electricity grids of The Netherlands. Considers:- Population and outage data (Nestor), aged-related failures and non-age related- different scenario’s: No action, Plans issued in 2009, Theoretically optimal (with differentobjectives)- Distribution automation, Intensified maintenance, Prevention of failures due to excavations,Larger workforce for emergency shift Recommendations for further research and consultation:- Determine at a strategic level which (long-term) SAIDI the DNOs aim for.- Further in-depth research into failure modes, failurebehaviour and failure curves of components- Biennial evaluation and recalibration of the study,updating model assumptions and estimations.13J
  • 13. CIRED 2013May 8th 20130345 Multi-criteria Optimization Of Maintenance ActivitiesGermany Evaluation of the long-range investment and resource planning of the assets of thecomplete power system. Aim: to reduce the maintenance costs under the conditionto keep the availability on a high level. This multi-criteria task (competitive targets, reliability and economy) isexemplary solved on the basis of three different assets groups (power transformers,circuit-breakers and disconnectors). to decrease the number of combinations substantially game theory is applied. Multi-targets are translated into single utility function Method is described, but not in detail14J
  • 14. CIRED 2013May 8th 20131482 Building a framework for integrated risk management of compl. projects: thecase of a major distr network investmentHoughton, Ackermann, Howick, Quigley, Walls, UK This paper is about a process in which risks of a major renewable integration projectwere identified and managed. The paper describes the process, the workshops, andthe development of an integrated risk management framework that covers bothoperational as well as systemic risks. Innovations are that ‘soft’ risk assessment methods like group sessions arecombined with ‘hard’ risk modeling using bayesian networks.16J 
  • 15. CIRED 2013May 8th 2013172. Network development
  • 16. CIRED 2013May 8th 20130718 Improving Quality Of Supply And Usage Of Assets In Distribution Grids ByIntroducing A “Smart Operator” Germany This paper is about a project to develop a “Smart Operator”. The following objectives are to be reached:- Increased grid efficiency, intelligent monitoring and steering of producers, storage andconsumers, improved load management, innovative grid components- regulated local grid transformers, various types of electrochemical storage, remotely controlled lowvoltage switches, charging stations for electric vehicles, home energy controller (HEC).- Proof of technical functionality (at first under laboratory conditions), as well as of theapplicability of the developed technology in the grid based on three field tests- Recommendations on regulation for grid operators based on the results of this pilot project- Assessment of effects on the grid of storage operation and usage of consumer flexibility. Demonstrations 2013-2014.18J
  • 17. CIRED 2013May 8th 20130726 I-net, The Reality Of An Intelligent Distribution NetworkHeerbaart, Kuipers, Baldinger, (Alliander, Eaton, Locamation ) Netherlands About Lianders Smart Grid (e.g. in Amsterdam, area 10 000 households)) bidirectional operation, self-healing functionality, automatic fault localization SASensor in Xiria substations  intelligent distribution substations (iDR - 20/10kV)- New fiber optic network rolled out for sophisticated use Practical descriptions of setup, progress and successes.19J
  • 18. CIRED 2013May 8th 20131292 A SYSTEM ENGINEERING APPROACH TO LOW VOLTAGE DC DISTRIBUTIONTero KAIPIA et. al. Finland and Wookyu CHAE et. al. Korea This paper is about the overall system engineering aspects of LVDC electricitydistribution. And it is also about the importance of the standardisation of LVDC technology. Innovations is: a methodology for selecting the techno-economic optimal voltagelevel within the boundary conditions set by the DC system application and theoperating environment. Conclusions are- A comprehensive system engineering approach is needed for LVDC technology to ensurethe compatibility between applications.- As LVDC is still quite immature, standardisation should leave enough freedoms for systemdesigners and developers.- Safety issues must be emphasised.21J 
  • 19. CIRED 2013May 8th 20131330 THE EFFECTIVENESS OF USING IEC61660 FOR CHARACTERISING SHORT-CIRCUITCURRENTS OF FUTURE LOW VOLTAGE DC DISTRIBUTION NETWORKSAbdoulah EMHEMED Graeme Burt, UK This paper is about the effectiveness of using IEC61660 for short-circuit currentcharacterisation of LVDC And it is also about- Potential benefits the LVDC offers for future power systems- challenges brought by the LVDC technology for understanding fault behaviour and effective protectionsystems. Conclusions are: by comparing IEC61660-based calculation and PSCAD/EMTDC simulation, itshows:- IEC61660 is effective for faults at the converter terminal, except the IEC decay time for fault current issignificant faster than that from the PSCAD simulation.- For remote faults, IEC61660 still gives correct steady-state fault current, but less accurate(underestimating the severity) for characterising the capacitor discharging currents.- LVDC system designed based on IEC61660 will experience problem with, component rating and faultdetection.- The reason for the error, IEC61660 was developed for small DC auxiliary installations, not for largenetworks.22J 
  • 20. CIRED 2013May 8th 20131340 Storage Simulations For Distribution System Analysis(EPRI) USA This paper describes three types of storage simulations on distribution systems forthree different time frames: capacity evaluations in 15-min intervals; renewablegeneration smoothing in 1-min intervals; and electromechanical dynamics analysisin intervals ranging from seconds down to microseconds. library of dynamic models (developed by EDF) comprises the following DESSstructure: storage media – chopper – voltage-controlled dc-bus – inverter – grid. the sequential-time simulation modes require moresophisticated models and more data than simple staticpower flow evaluation. Dynamics models of inverter-basedstorage may require values of more than 30 parameters. “Challenge” for most distribution planners. Some formof standard model framework must be developed23J
  • 21. CIRED 2013May 8th 2013243. Distribution planning
  • 22. CIRED 2013May 8th 20130257 Impacts Of Large-scale Integration Of PV Based Generations In A Mesh-connected Low Voltage NetworkBhattacharyya, Cobben, Toonen, (Endinet, Alliander) Netherlands This paper is about impact of (massive) PV in a meshed LV grid.Note: EV is ignored. Test network is simulated in Gaia software Practical approach to practical problem. Conclusions are that massive introduction of PV may lead to violate EN50160voltage requirements. Endinet plans a pilot project.26J
  • 23. CIRED 2013May 8th 20130500 “Smart Planning” – An Integrated Approach For Distribution System PlanningTo Cope With Its Future Requirements Germany This paper is about integrating challenges:- decentralized renewable sources are increasing.- Prediction scenarios construction of renewable energy sources resp. decommissioning ofconventional generation are divergent and heterogeneous.- The asset base mainly built during economic expansion periods within the last century areshifting to critical states.- Investment budgets are shrinking. to address these challenges- Find synergies between network expansion planning and strategic asset management, usingpractical rules from DNO- Use computer models and optimization techniques, like Genetic Optimization- Combine probabilistic scenario identification, network expansion planning, maintenanceplanning, contingency analysis, asset simulation, financial valuation, network optimization. The developed “new” integrated approach will be used for an analysis of a realdistribution system. The practicability will be demonstrated by end of 2013 byintegrating the different modules in the asset optimization process.27J
  • 24. CIRED 2013May 8th 20130609 First Use Of Smart Grid Data In Distribution Network PlanningFrance, Spain ERDF "ERABLE" project aims at creating value from smart meter data in terms ofdistribution network planning and power quality improvement. Automatically runs a “playback”, day after day, of the system by projecting themeasured load curves into DIgSILENT PowerFactory (DPL scripts, new API). Calculations detect constraints and consider load balancing as operationalreinforcement alternative. Describes daily and monthly process, and data handling issues Future additional developments- Implementation of new Smart Grid controls- Probabilistic power flow based on individual load model- Global simulation integrating MV and LV networks.28J
  • 25. CIRED 2013May 8th 20130622 MARKET POTENTIAL ANALYSIS FOR THE PROVISION OF BALANCINGRESERVE WITH A FLEET OF ELECTRIC VEHICLESRaths, Schnettler, Pollok, Brandt, Sowa, Eckstein, Germany This paper is about providing ancillary services (balancing reserves) with electricvehicles and as such increasing the market potential. Based on a case study of theGerman energy market the economic feasibility is assessed. The findings suggest favourable economics for balancing reserve services which isstated to create a positive momentum for electric vehicle uptake in Germany. Thethree balancing reserve markets (primary, secondary and tertiary) are assessed. Acombined annual profit of 100 to 150 euro per EV is found to be possible. The profit maximization is done via linear programming.29J 
  • 26. CIRED 2013May 8th 20130624 Novel Algorithm To The Multi-stage Grid Expansion Problem Taking Into Account GridTopology Modifications And Storage Devices Germany multi-stage grid expansion problem: Grid topology modifications by dynamicallyadded busses and electrical storage devices Includes mathematical formulation: mixed integer linear programming problem witha non-convex solution space. Uses heuristic Branch & Bound method, adapted for non-convex solution space(due to storage devices) -> "Split and Stint Algorithm" (S&S) Applied to several test systems, like IEEE further research:- solve bigger problems- energetic verification for storage units- (mutual charging is not yet regarded).- Simultaneous power line and storage-technologies.- stochastic variables renewable energy30J
  • 27. CIRED 2013May 8th 20130807 Network planning case study utilising real-time thermal ratingsand computational fluid dynamicsGreenwood, Ingram, Taylor, Collinson, Brown, UK This paper is about:- Real time thermal rating of overhead lines- Application of RTTR on real distribution system Innovations are:- CFD modelling of overhead line routes Conclusions are:- Dynamic rating of overhead lines is much higher than static rating provided that correct routeis chosen31J 
  • 28. CIRED 2013May 8th 20130840 A MULTI-AGENT BASED APPROACH FOR SIMULATING G2V AND V2GCHARGING STRATEGIES FOR LARGE ELECTRIC VEHICLE FLEETSÜbermasser, Stifter, Germany This paper is about creating a platform to determine the optimzation of chargingfleets of EVs. Temperature dependency and charging losses have beenimplemented. Based on defined defined power limits and power generation acharging algorithm was developed that enables allocation of charging power toindividual vehicles as a function of their state-of-charge. It is concluded that the algorithm provided decreases the number of vehicles whichrun out of energy during the next trip and might increase the level of acceptance. The algorithm optimizes charging via minimizing the number of vehicles with lowstate-of-charge (under threshold).32J 
  • 29. CIRED 2013May 8th 20130847 Avoiding MV-network Expansion By Distributed Voltage ControlGermany using VCDT-technology (Voltage Controlled Distribution Transformers) for an area-wide dispersed voltage control is at first explained, then shown in its effects on ruralMV grids and finally discussed in its advantages and disadvantages. Theoretic analyses show that DVC is a promising approach to integrate lots ofadditional DG with little or none extra network expansion. At the same time, highrates of heat pumps and e-cars can be integrated easily in existing MV grids. The next steps are:- an extended study with more substations- in-depth study about (n-1)-conditions- development of network planning rules for the applicationof VCDT technology under standard conditions A field study starts February 2013 by changing transformersin two entire villages. First results may be presented in June.33J
  • 30. CIRED 2013May 8th 20131046 Requirements For Advanced Decision Support Tools In Future DistributionNetwork PlanningGrond, Morren, Slootweg, (Enexis, TU/e) Netherlands Need and requirements for advanced decision support tools in future networkplanning from a distribution network operator perspective. The existing tools will no longer be satisfactory for future application due to presentdevelopments in the electricity sector that increase uncertainty. Advanced decision support tools require the most efficient optimization techniques,must be able to find the optimal investment path considering multiple scenarios, andshould not only consider classic expansion strategies but also intelligent ones (e.g.energy storage and controlling active demand). Generic overview, pleading for innovation34J
  • 31. CIRED 2013May 8th 20131241 IMPACT OF THE LARGE SHARE OF RENEWABLE GENERATION ONINVESTMENT COSTS AT THE EXAMPLE OF AUW DISTRIBUTION NETWORKSBirgit MEYER et al GERMANY This paper is about the large scale implementation of distributed generation (windand PV) in MV and LV networks in the southern part of Germany Several solutions like conventional network extension, energy storage, loadmanagement and smart grid component are compared in terms of number of assetsand investment costs Innovations are smart solutions for the implementation of DER (smart gridtechnologies, regulated distribution transformers etc.) Conclusions:- Future renewable generation should be integrated directly into the medium or high voltage network tomeet the 2022 target- Load management is not effective due to high infeed versus relatively low load- Smart grid components and battery storage should be implemented in the future German regulationsystem in order to make them economically viable- If regulated distribution transformers are installed, no additional LV network extension is required35J 
  • 32. CIRED 2013May 8th 20131356 ANALYSIS OF THE OPTIONS TO REDUCE THE INTEGRATION COSTS OF RENEWABLE GENERATION IN THEDISTRIBUTION NETWORKS. PART 2: A STEP TOWARDS ADVANCED CONNECTION STUDIES TAKING INTO ACCOUNT THEALTERNATIVES TO GRID REINFORCEMENTGauthier DELILLE Gilles MALARANGE Christophe GAUDIN, France This paper presents a tool (under development at EDF R&D) for DG/RES connectionstudies, that analyses the merit order of various grid reinforcement alternatives. Considered Grid reinforcement alternatives:- Distribution grid reinforcement- Reactive power control at the Point of Common Coupling: constant Power Factor- Generation Curtailment- Distributed Energy Storage System The tool is developed within Matlab environment Innovations: merit order analysis of grid reinforcement alternatives in DG/RES gridconnection studies Conclusions: further research topics: statistical representativity, sensitivity studies andimplementation of the proposed approach within ERDF planning tools.37J 
  • 33. CIRED 2013May 8th 20131419 IMPACTS OF PHOTOVOLTAICS ON LOW VOLTAGE NETWORKS: ACASE STUDY FOR THE NORTH WEST OF ENGLANDAlejandro NAVARRO, Luis F. OCHOA, Pierluigi MANCARELLA, Dan RANDLES, UK This paper investigates the impacts of different PV penetrations on a real LV networklocated in the North West of England. Two Scenarios based on location: closer to and further from the distribution transformer. Modelling aspects:- Monte Carlo approach is used.- Time-series behaviour of loads and PV generation: 5-min resolution models for domesticload and PV generation- Load profile and PV profile are linked Impact indices:- Percentage of consumers with voltage problems- Utilisation factor of the main feeder Innovations: none Conclusions: PV location plays a significant role on the potential impacts on voltage. Longerfeeders present voltage issues sooner than shorter ones.39 J
  • 34. CIRED 2013May 8th 20131456 LIVING LAB ‘ROTTERDAM TESTS ELECTRIC DRIVING’ (FOCUS ON THEMONITORING OF THE IMPACT ON THE ELECTRIC GRID)FIDDER, NEURAY, STRENG, JAHN, VAN LUMIG, NETHERLANDS This paper focusses on the impact of electric driving on the electricity grid. With thispurpose measured loads in MV/LV distribution substations and load profiles fromEVs are combined. This enables an evaluation of the moment, the place and atwhat level of charging point penetration the grid starts to saturate. It is concluded that with active control from the DSO, it is possible to double thenumber of charging poles on office locations, provided the EVs stay connected tothe charging point for 8 hours and charge for 4 hours. In the analyzed residential areas, at least a doubling of the number of chargingcycles can be achieved by active control.41J 
  • 35. CIRED 2013May 8th 2013424. Methodsand Tools
  • 36. CIRED 2013May 8th 20130018 Changes In Forecasting Of HV/MV-transformer Loading Due To DistributedGenerationBerende, De Ruiter, Morren, (Enexis) Netherlands Enexis has adapted its load forecasting method for HV/MV-transformers toincorporate the influence of distributed generation. AMR measurement data, total generation and total demand in an MV-grid can bedetermined and separate forecasted, with a certain correlation between demandand generation for different types of DG. Forecasts can be merged into a singleforecast of transformer loading. Based on the correlation a minimum DG infeed can be determined, as apercentage of installed generation capacity. The forecast can be used in the regularnetwork planning process, reducing uncertaintyand (probably, but not in the papers conclusion)may save money or postpone replacements.43J
  • 37. CIRED 2013May 8th 20130724 DYNAMIC EQUIVALENTS OF ACTIVE DISTRIBUTION POWERSYSTEMS FOR INVESTIGATION OF TRANSIENT STABILITYTraian N. PREDA, Kjetil Uhlen Dag Eirik Nordgård, Trond Toftevaag, Norway This paper describes a method for power systems reduction and aggregation of generators toobtain dynamic equivalents of distribution power systems with DG units. Criteria to validatethis method for distribution power systems are proposed. The method consists of the following steps:- DG units coherency identification- DG unit dynamic aggregation- DPS network reduction Innovations: none Conclusions: The dynamic equivalent obtained for DPS preserves the original response, interms of voltage magnitude and angle variations.45J
  • 38. CIRED 2013May 8th 2013www.dnvkema.com
  • 39. CIRED 2013May 8th 201348ALL PAPERS
  • 40. CIRED 2013May 8th 201349J
  • 41. CIRED 2013May 8th 2013(018) Changes In Forecasting Of HV/MV-transformer Loading Due ToDistributed GenerationBerende, De Ruiter, Morren, (Enexis) Netherlands Enexis has adapted its load forecasting method for HV/MV-transformers toincorporate the influence of distributed generation. AMR measurement data, total generation and total demand in an MV-grid can bedetermined and separate forecasted, with a certain correlation between demandand generation for different types of DG. Forecasts can be merged into a singleforecast of transformer loading. Based on the correlation a minimum DG infeed can be determined, as apercentage of installed generation capacity. The forecast can be used in the regularnetwork planning process, reducing uncertaintyand (probably, but not in the papers conclusion)may save money or postpone replacements.50J
  • 42. CIRED 2013May 8th 20130208 Risk analysis of alternatives to N-1 reserves in a network with large amounts ofwind powerBollen, Chen, Etherden, SWEDEN This paper is about local straightforward alternatives to N-1 reserves whenconnecting a wind farm to the grid And it is about how these alternatives affect the actual produced wind power. Innovations are the simple and elegant way of solving the issue. Conclusions are that although more research is needed, when N-1 can becircumvented some of the problems surrounding wind power are not relevantanymore.51J 
  • 43. CIRED 2013May 8th 20130229 Netw Planning and decision support tool for integration of low carbon tech and solutionsHollingworth, Mukherjee, Hodges, Miller, Lyons, UK This paper is about a newly developed software tool to support network planning. And it is about some of the details of that software. Innovations are the presentation of several grid design alternatives. However, it isnot fully clear how those alternatives are generated or assessed. Moreover, itseems to be based on a specific set of load flow softwares and informationdatabases, and as such not easily implementable at other DSOs.52J
  • 44. CIRED 2013May 8th 2013(257) Impacts Of Large-scale Integration Of PV Based Generations In A Mesh-connected Low Voltage NetworkBhattacharyya, Cobben, Toonen, (Endinet, Alliander) Netherlands This paper is about impact of (massive) PV in a meshed LV grid.Note: EV is ignored. Test network is simulated in Gaia software Practical approach to practical problem. Conclusions are that massive introduction of PV may lead to violate EN50160voltage requirements. Endinet plans a pilot project.53J
  • 45. CIRED 2013May 8th 20130302 A methodology for ranking locations according to the likelihood and consequence ofextreme eventsBlake, Taylor, Miller, UK This paper is about a practical method to rank locations based on a sound riskmethodology. It illustrates how locations can be ranked in a practical manner that allows on theone hand for standard risk and reliability calculations and on the other hand forexpert judgement. Innovations are limited: this method has been known. However, the paper is wellpresented and applicable.54J 
  • 46. CIRED 2013May 8th 2013(307) Investing In The Future: Long-term Optimization Of Asset ReplacementIn The Collective Regional Electricity Grids Of The NetherlandsBrouns, Poorts, (Enexis) NETHERLANDS Paper presents results of a study on the effects of asset ageing on the reliabilityand affordability of the collective regional electricity grids of The Netherlands. Considers:- Population and outage data (Nestor), aged-related failures and non-age related- different scenario’s: No action, Plans issued in 2009, Theoretically optimal (with differentobjectives)- Distribution automation, Intensified maintenance, Prevention of failures due to excavations,Larger workforce for emergency shift Recommendations for further research and consultation:- Determine at a strategic level which (long-term) SAIDI the DNOs aim for.- Further in-depth research into failure modes, failurebehaviour and failure curves of components- Biennial evaluation and recalibration of the study,updating model assumptions and estimations.55J
  • 47. CIRED 2013May 8th 2013(345) Multi-criteria Optimization Of Maintenance ActivitiesGermany evaluation of the long-range investment and resource planning of the assets of thecomplete power system. Aim: to reduce the maintenance costs under the conditionto keep the availability on a high level. This multi-criteria task (competitive targets, reliability and economy) isexemplary solved on the basis of three different assets groups (power transformers,circuit-breakers and disconnectors). to decrease the number of combinations substantially game theory is applied. Multi-targets are translated into single utility function Method is described, but not in detail56J
  • 48. CIRED 2013May 8th 2013(500) “Smart Planning” – An Integrated Approach For Distribution SystemPlanning To Cope With Its Future Requirements Germany This paper is about integrating challenges:- decentralized renewable sources are increasing.- Prediction scenarios construction of renewable energy sources resp. decommissioning ofconventional generation are divergent and heterogeneous.- The asset base mainly built during economic expansion periods within the last century areshifting to critical states.- Investment budgets are shrinking. to address these challenges- Find synergies between network expansion planning and strategic asset management, usingpractical rules from DNO- Use computer models and optimization techniques, like Genetic Optimization- Combine probabilistic scenario identification, network expansion planning, maintenanceplanning, contingency analysis, asset simulation, financial valuation, network optimization. The developed “new” integrated approach will be used for an analysis of a realdistribution system. The practicability will be demonstrated by end of 2013 byintegrating the different modules in the asset optimization process.57J
  • 49. CIRED 2013May 8th 20130577 DEVELOPING INDICATORS FOR MONITORING VULNERABILITYOF POWER LINES – CASE STUDIESMatthias HOFMANN, Oddbjørn GJERDE, Gerd H. KJØLLE, Eivind GRAMME, Johan G. HERNES, Jan A. FOOSNÆS, Norway This paper is about how information from vulnerability analyses and existingmaintenance management systems can be combined with information about threatsand criticality to establish vulnerability indicators for power lines And it illustrates the development of vulnerability indicators for critical power linesthrough two case studies together with network companies. Innovations are- Combining Expert Assessment and Calculation based on data- Identifying critical assets to limit the effort of data collection and indicator modelling Conclusions are- More effort is required for a consistent set of indicators- Aggregation and weighting are important to represent the vulnerability on an aggregatedlevel.- Leading indicators ( future vulnerability ) are a remaining challenge.58J 
  • 50. CIRED 2013May 8th 2013(609) First Use Of Smart Grid Data In Distribution Network PlanningFrance, Spain ERDF "ERABLE" project aims at creating value from smart meter data in terms ofdistribution network planning and power quality improvement. Automatically runs a “playback”, day after day, of the system by projecting themeasured load curves into DIgSILENT PowerFactory (DPL scripts, new API). Calculations detect constraints and consider load balancing as operationalreinforcement alternative. Describes daily and monthly process, and data handling issues Future additional developments- Implementation of new Smart Grid controls- Probabilistic power flow based on individual load model- Global simulation integrating MV and LV networks.59J
  • 51. CIRED 2013May 8th 20130622 MARKET POTENTIAL ANALYSIS FOR THE PROVISION OF BALANCINGRESERVE WITH A FLEET OF ELECTRIC VEHICLESRaths, Schnettler, Pollok, Brandt, Sowa, Eckstein, Germany This paper is about providing ancillary services (balancing reserves) with electricvehicles and as such increasing the market potential. Based on a case study of theGerman energy market the economic feasibility is assessed. The findings suggestfavourable economics for balancing reserve services which is stated to create apositive momentum for electric vehicle uptake in Germany. The three balancingreserve markets (primary, secondary and tertiary) are assessed. A combined annualprofit of 100 to 150 euro is found to be possible. The profit maximization is done via linear programming.60J 
  • 52. CIRED 2013May 8th 2013(624) Novel Algorithm To The Multi-stage Grid Expansion Problem Taking Into AccountGrid Topology Modifications And Storage Devices Germany multi-stage grid expansion problem: Grid topology modifications by dynamicallyadded busses and electrical storage devices Includes mathematical formulation: mixed integer linear programming problem witha non-convex solution space. Uses heuristic Branch & Bound method, adapted for non-convex solution space(due to storage devices) -> "Split and Stint Algorithm" (S&S) Applied to several test systems, like IEEE further research:- solve bigger problems- energetic verification for storage units- (mutual charging is not yet regarded).- Simultaneous power line and storage-technologies.- stochastic variables renewable energy61J
  • 53. CIRED 2013May 8th 20130664 COMPARING LOAD ESTIMATION METHODS FOR DISTRIBUTION SYSTEMANALYSISARRITT, DUGAN, USA Load allocations for distribution system analysis is one area in system modellingwhere simple, generalized assumptions are commonly made by distributionplanners for lack of better data. In this paper three techniques (Transformer kVAallocation, Monthly Usage Allocation, Class Loadshape Allocations) for loadallocation are analyzed and compared to the case with actual AMI (advancedmetering infrastructure) data for all customers. Using the load allocation, networkanalyses have been performed. It is concluded that AMI will provide distribution planners with greatly improvedpredictions of actual system performance. Other methods not only under-reportoverloads but also mis-report overloads. For network losses the Monthly UsageAllocation gives similar results to AMI.62J 
  • 54. CIRED 2013May 8th 2013(718) Improving Quality Of Supply And Usage Of Assets In Distribution GridsBy Introducing A “Smart Operator” Germany This paper is about a project to develop a “Smart Operator”. The following objectives are to be reached:- Increased grid efficiency, intelligent monitoring and steering of producers, storage andconsumers, improved load management, innovative grid components- regulated local grid transformers, various types of electrochemical storage, remotely controlled lowvoltage switches, charging stations for electric vehicles, home energy controller (HEC).- Proof of technical functionality (at first under laboratory conditions), as well as of theapplicability of the developed technology in the grid based on three field tests- Recommendations on regulation for grid operators based on the results of this pilot project- Assessment of effects on the grid of storage operation and usage of consumer flexibility. Demonstrations 2013-2014.63J
  • 55. CIRED 2013May 8th 20130724 DYNAMIC EQUIVALENTS OF ACTIVE DISTRIBUTION POWERSYSTEMS FOR INVESTIGATION OF TRANSIENT STABILITYTraian N. PREDA, Kjetil Uhlen Dag Eirik Nordgård, Trond Toftevaag, Norway This paper describes a method for power systems reduction and aggregation of generators toobtain dynamic equivalents of distribution power systems with DG units. Criteria to validatethis method for distribution power systems are proposed. The method consists of the following steps:- DG units coherency identification- DG unit dynamic aggregation- DPS network reduction Innovations: none Conclusions: The dynamic equivalent obtained for DPS preserves the original response, interms of voltage magnitude and angle variations.64J
  • 56. CIRED 2013May 8th 2013(726) I-net, The Reality Of An Intelligent Distribution NetworkHeerbaart, Kuipers, Baldinger, (Alliander, Eaton, Locamation ) Netherlands About Lianders Smart Grid (e.g. in Amsterdam, area 10 000 households)) bidirectional operation, self-healing functionality, automatic fault localization SASensor in Xiria substations  intelligent distribution substations (iDR - 20/10kV)- New fiber optic network rolled out for sophisticated use Practical descriptions of setup, progress and successes.65J
  • 57. CIRED 2013May 8th 20130807 Network planning case study utilising real-time thermal ratingsand computational fluid dynamicsGreenwood, Ingram, Taylor, Collinson, Brown, UK This paper is about:- Real time thermal rating of overhead lines- Application of RTTR on real distribution system Innovations are:- CFD modelling of overhead line routes Conclusions are:- Dynamic rating of overhead lines is much higher than static rating provided that correct routeis chosen66J 
  • 58. CIRED 2013May 8th 20130840 A MULTI-AGENT BASED APPROACH FOR SIMULATING G2V AND V2GCHARGING STRATEGIES FOR LARGE ELECTRIC VEHICLE FLEETSÜbermasser, Stifter, Germany This paper is about creating a platform to determine the optimzation of chargingfleets of EVs. Temperature dependency and charging losses have beenimplemented. Based on defined defined power limits and power generation acharging algorithm was developed that enables allocation of charging power toindividual vehicles as a function of their state-of-charge. It is concluded that the algorithm provided decreases the number of vehicles whichrun out of energy during the next trip and might increase the level of acceptance. The algorithm optimizes charging via minimizing the number of vehicles with lowstate-of-charge (under threshold).67J 
  • 59. CIRED 2013May 8th 2013(847) Avoiding MV-network Expansion By Distributed Voltage ControlGermany using VCDT-technology (Voltage Controlled Distribution Transformers) for an area-wide dispersed voltage control is at first explained, then shown in its effects on ruralMV grids and finally discussed in its advantages and disadvantages. Theoretic analyses show that DVC is a promising approach to integrate lots ofadditional DG with little or none extra network expansion. At the same time, highrates of heat pumps and e-cars can be integrated easily in existing MV grids. The next steps are:- an extended study with more substations- in-depth study about (n-1)-conditions- development of network planning rules for the applicationof VCDT technology under standard conditions A field study starts February 2013 by changing transformersin two entire villages. First results may be presented in June.68J
  • 60. CIRED 2013May 8th 20131175 ON THE TEMPERATURE DEPENDENCE OF THE LOAD CURVE OF THE CITYOF ZURICHKLEMENZ, BADER, LUTERNAUER, SWITZERLAND This paper deals with the correlation between electricity consumption in the city ofZurich and the outside temperature. A tend to rising energy consumption in summercan be observed. The contribution gives indication regarding evolution of peak loadin the future for dimensioning the distribution grid. It is concluded that the temperature dependence of the load can best be describedby a polynomial of the fourth degree and the radiation effect on the load (globalradiation) by a linear trend.69J 
  • 61. CIRED 2013May 8th 2013(1096) A Testbed For The Assessment Of Active Network ManagementApplications Using Simulation And Communications Emulation UK This paper is about Active Network Management (ANM) ANM covers a number of control techniques:- Power Flow Management;- Voltage Management;- Automatic Restoration- System Balancing;- Increased Visibility of Network Conditions Simulation-based testing is proposed to assess the merits of ANM. Paper presentsa flexible testbed for ANM solutions, using commercially available software in areal-time environment. (e.g. PowerFactory, RSCAD (RTDS), Phyton, OPNET …) Future work includes validating the testbed against an existing case70J
  • 62. CIRED 2013May 8th 20131266 The impact of EV’s fast charging stations on the MV distributiongrids of the Milan metropolean areaMauri, Bertini, Fasciolo, Fratti, Italy This paper is about:- Impact of EV fast charging stations on grid of Milan in 2030- Grid support by storage units placed at fast charging stations Innovations are:- N.A. Conclusions are:- The robust urban distribution network of Milan is able to handle additional EV demandwithout exceeding voltage limits- The use of storage units will alleviate voltage problems in other urban distribution networkswhere fast charging stations may cause such problems71J 
  • 63. CIRED 2013May 8th 2013(1340) Storage Simulations For Distribution System Analysis(EPRI) USA This paper describes three types of storage simulations on distribution systems forthree different time frames: capacity evaluations in 15-min intervals; renewablegeneration smoothing in 1-min intervals; and electromechanical dynamics analysisin intervals ranging from seconds down to microseconds. library of dynamic models (developed by EDF) comprises the following DESSstructure: storage media – chopper – voltage-controlled dc-bus – inverter – grid. the sequential-time simulation modes require moresophisticated models and more data than simple staticpower flow evaluation. Dynamics models of inverter-basedstorage may require values of more than 30 parameters. “Challenge” for most distribution planners. Some formof standard model framework must be developed72J
  • 64. CIRED 2013May 8th 2013(1426) Power System Planning In Distribution Networks Today And In TheFuture With Smart Grids Norway Describes planning process in NTE Nett, whatmight change when (DER) are integrated. Plusnew challenges and possibilities the (DSO) willface regarding planning within smart grids. Topics (briefly overviewed):- Load profiles- Voltage level in MV and LV, weak grid issues- LV with isolated neutral- Integration of DG- new components- telecom, sensors, meters, PLC,power electronics, control systems,- Smart meter data, ICT- Demand respons73J [5] from Sintef
  • 65. CIRED 2013May 8th 2013(1046) Requirements For Advanced Decision Support Tools In FutureDistribution Network PlanningGrond, Morren, Slootweg, (Enexis, TU/e) Netherlands Need and requirements for advanced decision support tools in future networkplanning from a distribution network operator perspective. The existing tools will no longer be satisfactory for future application due to presentdevelopments in the electricity sector that increase uncertainty. Advanced decision support tools require the most efficient optimization techniques,must be able to find the optimal investment path considering multiple scenarios, andshould not only consider classic expansion strategies but also intelligent ones (e.g.energy storage and controlling active demand). Generic overview, pleading for innovation74J
  • 66. CIRED 2013May 8th 20131241 IMPACT OF THE LARGE SHARE OF RENEWABLE GENERATION ONINVESTMENT COSTS AT THE EXAMPLE OF AUW DISTRIBUTION NETWORKSBirgit MEYER et al GERMANY This paper is about the large scale implementation of distributed generation (windand PV) in MV and LV networks in the southern part of Germany Several solutions like conventional network extension, energy storage, loadmanagement and smart grid component are compared in terms of number of assetsand investment costs Innovations are smart solutions for the implementation of DER (smart gridtechnologies, regulated distribution transformers etc.) Conclusions:- Future renewable generation should be integrated directly into the medium or high voltage network tomeet the 2022 target- Load management is not effective due to high infeed versus relatively low load- Smart grid components and battery storage should be implemented in the future German regulationsystem in order to make them economically viable- If regulated distribution transformers are installed, no additional LV network extension is required75J 
  • 67. CIRED 2013May 8th 20131292 A SYSTEM ENGINEERING APPROACH TO LOW VOLTAGE DC DISTRIBUTIONTero KAIPIA et. al. Finland and Wookyu CHAE et. al. Korea This paper is about the overall system engineering aspects of LVDC electricitydistribution. And it is also about the importance of the standardisation of LVDC technology. Innovations is: a methodology for selecting the techno-economic optimal voltagelevel within the boundary conditions set by the DC system application and theoperating environment. Conclusions are- A comprehensive system engineering approach is needed for LVDC technology to ensurethe compatibility between application- As LVDC is still quite immature, standardisation should leave enough freedoms for systemdesigners and developers.- Safety issues must be emphasised.76J 
  • 68. CIRED 2013May 8th 20131330 THE EFFECTIVENESS OF USING IEC61660 FOR CHARACTERISING SHORT-CIRCUITCURRENTS OF FUTURE LOW VOLTAGE DC DISTRIBUTION NETWORKSAbdoulah EMHEMED Graeme Burt, UK This paper is about the effectiveness of using IEC61660 for short-circuit currentcharacterisation of LVDC And it is also about- Potential benefits the LVDC offers for future power systems- challenges brought by the LVDC technology for understanding fault behaviour and effective protectionsystems. Conclusions are: by comparing IEC61660-based calculation and PSCAD/EMTDC simulation, itshows:- IEC61660 is effective for faults at the converter terminal, except the IEC decay time for fault current issignificant faster than that from the PSCAD simulation.- For remote faults, IEC61660 still gives correct steady-state fault current, but less accurate(underestimating the severity) for characterising the capacitor discharging currents.- LVDC system designed based on IEC61660 will experience problem with, component rating and faultdetection.- The reason for the error, IEC61660 was developed for small DC auxiliary installations, not for largenetworks.77J 
  • 69. CIRED 2013May 8th 20131356 ANALYSIS OF THE OPTIONS TO REDUCE THE INTEGRATION COSTS OF RENEWABLE GENERATION IN THEDISTRIBUTION NETWORKS. PART 2: A STEP TOWARDS ADVANCED CONNECTION STUDIES TAKING INTO ACCOUNT THEALTERNATIVES TO GRID REINFORCEMENTGauthier DELILLE Gilles MALARANGE Christophe GAUDIN, France This paper presents a tool (under development at EDF R&D) for DG/RES connectionstudies, that analyses the merit order of various grid reinforcement alternatives. Considered Grid reinforcement alternatives:- Distribution grid reinforcement- Reactive power control at the Point of Common Coupling: constant Power Factor- Generation Curtailment- Distributed Energy Storage System The tool is developed within Matlab environment Innovations: merit order analysis of grid reinforcement alternatives in DG/RES gridconnection studies Conclusions: further research topics: statistical representativity, sensitivity studies andimplementation of the proposed approach within ERDF planning tools.78J 
  • 70. CIRED 2013May 8th 20131370 ASSESSING THE IMPACT OF ICT ON THE RELIABILITY OF ACTIVEDISTRIBUTION SYSTEMSJason TAYLOR USA, Samuel JUPE UK, Gianni CELLI Fabrizio PILOItaly This paper gives an overview of and approaches to assess the impact of information andcommunication technologies (ICTs) on the reliability of active distribution systems, basedon the shared experiences of CIGRE Working Group C6.19 “Planning and OptimizationMethods for Active Distribution Systems”. The functionality of a co-simulation tool functionality, assessment, and data requirementsare consideredCo-simulation: simultaneous simulation of power delivery and communications networks. Innovations: co-simulation ambition(functional requirements) Conclusions: ICTs are critical components in the successful deployment of ADSs and powerdelivery systems are expected to become increasingly reliant on these technologies.79J 
  • 71. CIRED 2013May 8th 20131419 IMPACTS OF PHOTOVOLTAICS ON LOW VOLTAGE NETWORKS: ACASE STUDY FOR THE NORTH WEST OF ENGLANDAlejandro NAVARRO, Luis F. OCHOA, Pierluigi MANCARELLA, Dan RANDLES, UK This paper investigates the impacts of different PV penetrations on a real LV networklocated in the North West of England. Two Scenarios based on location: closer to and further from the distribution transformer. Modelling aspects:- Monte Carlo approach is used.- Time-series behaviour of loads and PV generation: 5-min resolution models for domesticload and PV generation- Load profile and PV profile are linked Impact indices:- Percentage of consumers with voltage problems- Utilisation factor of the main feeder Innovations: none Conclusions: PV location plays a significant role on the potential impacts on voltage. Longerfeeders present voltage issues sooner than shorter ones.80 J
  • 72. CIRED 2013May 8th 20131456 LIVING LAB ‘ROTTERDAM TESTS ELECTRIC DRIVING’ (FOCUS ON THEMONITORING OF THE IMPACT ON THE ELECTRIC GRID)FIDDER, NEURAY, STRENG, JAHN, VAN LUMIG, NETHERLANDS This paper focusses on the impact of electric driving on the electricity grid. With thispurpose measured loads in MV/LV distribution substations and load profiles fromEVs are combined. This enables an evaluation of the moment, the place and atwhat level of charging point penetration the grid starts to saturate. It is concluded that with active control from the DSO, it is possible to double thenumber of charging poles on office locations, provided the EVs stay connected tothe charging point for 8 hours and charge for 4 hours. In the analyzed residential areas, at least a doubling of the number of chargingcycles can be achieved by active control.81J 
  • 73. CIRED 2013May 8th 20131482 Building a framework for integrated risk management of compl. projects: thecase of a major distr network investmentHoughton, Ackermann, Howick, Quigley, Walls, UK This paper is about a process in which risks of a major renewable integration projectwere identified and managed. The paper describes the process, the workshops, andthe development of an integrated risk management framework that covers bothoperational as well as systemic risks. Innovations are that ‘soft’ risk assessment methods like group sessions arecombined with ‘hard’ risk modeling using bayesian networks.82J 
  • 74. CIRED 2013May 8th 201383K
  • 75. CIRED 2013May 8th 20130078 Combination of Capacitor Placement and Reconfiguration for Loss Reductionin Distribution Systems using Selective PSOTamer M. KHALIL, Egypt, Alexander V. GORPINICH, Ukraine, Ghada M. ELBANNA, Egypt This paper is about reduction of power losses in distribution networks.For this purpose, capacitor and feeder reconfiguration are applied.An advanced optimization method is applied to solve the capacitor placement and theoptimal feeder reconfiguration problem.The method is applied to a distribution system of a Taiwan Power Company. The solver is based on the SPSO (Selective Particle Swarm Optimization) method, amodification of PSO (Particle Swarm Optimization) Innovations are modification of the PSO method: a selected space is being searched by PSO Conclusions are: the proposed SPSO is reliable and can be used for optimization of powerloss reduction in distribution networks.84K
  • 76. CIRED 2013May 8th 20130124 Fault current limiter optimal placement by harmony searchalgorithmZare, Khazali, Hashemi, Katebi, Khalili, Iran This paper is about- Optimal placement of fault current limiters by using the harmony search algorithm. Innovations are- Use of harmony search algorithm for solving power system problem Conclusions are- Application of harmony search algorithm is possible85K
  • 77. CIRED 2013May 8th 20130186 Investigating the Impacts of Plug-in Hybrid Electric Vehicles on DistributionCongestionSoroush SHAFIEE, Mahmud FOTUHI-FIRUZABAD, Mohammad RASTEGAR, Iran This paper studies the impact of PHEVs (plug-in hybrid electric vehicles) on theperformance of distribution networks.The impact of the PHEV penetration level on congestion in the distribution system isconsidered. A model of the PHEV load is developed considering the electrical characteristic of thePHEV battery, the plug-in time and the required charging energy.The household load profile is represented as an average household load profile plus thePHEV profile of assigned PHEVs.An IEEE 34 node test grid is considered Innovations: none Conclusions: widespread use of PHEVs in distribution systems can cause significantcongestion due to coincidence of daily peak load and charging time of PHEVs.86 K
  • 78. CIRED 2013May 8th 20130227 IMPROVED NETWORK ANALYSIIS BY USIING DATA FROM SMARTMETERSLars GARPETUN, Sweden This paper is about:- network analysis and calculations based on meter values instead of traditional methodsusing static load curves;- monitoring the network losses with good accuracy;- detecting wrongly installed meters and none measured consumption if the load is sufficienthigh;using data obtained with smart meters Innovations: none. Conclusions:- More accurate values (Pmax) for network analyses- Monitoring losses is possible - conditions: good data quality, reliable grid and consumerinformation87 K
  • 79. CIRED 2013May 8th 20130333 COPULA-BASED MULTIVARIATE STOCHASTIC MODELING OF LOAD DEMANDDUE TO PLUG-INELECTRIC VEHICLES IN ORDER TO BE INTEGRATED IN DISTRIBUTION SYSTEM PLANNINGPashajavid, Aliakbar Golkar, Iran This paper is about developing a multivariate probabilistic framework for PEV loadmodelling to be embedded in system planning problems. In this way departure time,arrival time and travelled distance distributions can be linked. And it is about copula functions and distributions to represent uncertainties in EVcharging behaviour. Innovations are the application of copula functions to represent EV chargingprocesses. Conclusions are not clear.88K
  • 80. CIRED 2013May 8th 20130347 COMPARISON BETWEEN DIFFERENT MULTI-OBJECTIVEAPPROACHES TO DISTRIBUTION NETWORK PLANNINGAlireza Haji, Bahman Jamshidi Eini, Morteza Mirvazand, Mohamadali Safari, Iran This paper is concerned with the evaluation of the strengths and weaknesses of networkoptimization methods for distribution planning and reconstruction. Five categories of optimization methods have been described (high level) and three assessed:- Chebyshev approaches- Pre-emptive or lexicographical approaches- Chebyshev approaches- Weighted-sum approaches Innovations: none Conclusions:- Chebyshev based models are capable of balancing conflicting objectives.- Pre-emptive methods are powerful tools for focusing on the most important objectives.- The results of weighted-sum methods are between these two extremes.89K
  • 81. CIRED 2013May 8th 20130363 EMERGING RELIABILITY REQUIREMENTS FOR DISTRIBUTION SYSTEMS INEXTREME WEATHER CONDITIONSJukka LASSILA Tero KAIPIA Juha HAAKANA Jarmo PARTANEN, Finland This paper is about the results of a survey in Finland on interruption and security ofpower supply. And it is also about two main element in the survey: the customer compensationpayments and the maximum blackout duration limits. Innovations are : Conclusions are- For DSOs, reaching the supply reliability targets call for significantly higher investmentvolumes in an accelerated pace.- The proposed reforms to the customer compensation scheme increase the financial risk ofDSCs, especially the smaller ones.90K 
  • 82. CIRED 2013May 8th 2013(421) Development Of Probabilistic Daily Demand Curves For DifferentCategories Of Customers UK The paper presents a methodology for developing probabilistic daily demand curvesfor different categories of consumers. From deterministic Decomposed Daily Loading Curves (DDLC) incorporatingrelevant uncertainties probabilistic DDLC are developed. With different groups of deterministic and probabilistic DDLC, overall demand canbe predicted, that will facilitate more accurate estimation of dynamic response ofdemand to network disturbances. The probabilistic nature of the study enables close to real time prediction of demandresponse as well as corresponding demand response shaping and such morereliable demand side management and more secure network operation.91K
  • 83. CIRED 2013May 8th 20130490 Managing uncertainty and updating parameters in electricity distribution asset conditionbased risk investment modelsBlack, Howarth, Nicholson, UK This paper shares experience in how to improve a condition based risk model. It describes in general terms how parameters, model choices and other aspects of“Health Index” type of models can be updated over time. The discussion remains high level and seems not very applicable.92K 
  • 84. CIRED 2013May 8th 20130512 A NOVEL ALGORITHM FOR LONG-TERM LOAD FORECASTING OFDISTRIBUTION NETWORKS UNDER REDEVELOPMENT CONDITIONSA. MOSHARI, Z. MADIHI, N. MOSLEMI, D. JALALI, IRAN This paper is about how to make a good long-term forecast of a small area’s loadgrowth when the area is in redevelopment (e.g. from rural to suburban or fromsuburban to urban). Innovations are the parallel use own (isolated) load growth forecast andidentification of redevelopment in neighbouring areas to make a more educatedprediction of the load growth. Conclusions are that for selected S-curve load growth cases the forecasting errorwith the new algorithm reduces as much as 17%.93K
  • 85. CIRED 2013May 8th 2013(548) A New Method For Optimal Planning In Extensive Distribution NetworksDespite Uncertain Data Iran This paper is about minimizing losses and investment by setting planning priorities And it is about the methodology, as K-means clustering algorithm- All objects in a cluster- Share the same or closely related properties;- Show small mutual distances or dissimilarities;- Have “contacts” or “relations” with at least one other object in the group; or- Be clearly distinguishable from the complement- In the paper clusters are evaluated using Silhouette Global Index Applied for real 11 kV grid Specialised, non-Dutch, poor languagemethod may be interesting for specialists94K
  • 86. CIRED 2013May 8th 20130565 Quantitative measurement of industrial risks in distribution networksCammarota, De Giovanni, Cudemo, Noferi, ITALY This paper is about a risk management framework as applied by Enel. It presents how a risk framework is used as a day by day management tool.95K 
  • 87. CIRED 2013May 8th 20130567 IMPLEMENTATION AND EVALUATION OF COMMONLY USED RISKANALYSIS METHODS APPLIED TO A REGIONAL POWER DISTRIBUTION SYSTEMCarl Johan WALLNERSTRÖM Patrik HILBER Julio GADEA TRAVI, Sweden This paper describes the assessment of risk management performed at the power distributionsystem of Gotland, the largest island in the Baltic Sea. Existing risk analysis methods that could be relevant to use are reviewed and summarized,currently performed risk analyses are evaluated. Risk analysis methods applied: risk assessment of 70/30 kV lines, of 10 kV systems, risk, ofsubstations, risk ranking and risk mitigation plan. Innovations: none Conclusions: two problems with current risk management have been identified, one relatedto the risk analysis of 70/30 kV lines and the other on the risk analysis used on substations.Existing methods have been adjusted and these modified methods were then evaluated withsatisfactory results.96 K
  • 88. CIRED 2013May 8th 20130667 Potential for impr. rel. and reduced interruption costs utilizing smart grid tech.Kjølle, Vadlamudi, Kvistad, Tutvedt, NORWAY This paper presents an example of how to quantify the benefits of smart gridtechnology. Using a case study, it is demonstrated how one could quantify the benefits of theuse of fault current sensors, which assists decisions on rollout and placement Innovations are limited, but the example is worked out well.97K 
  • 89. CIRED 2013May 8th 20130698 Correlation between load density and voltage dropS Emelin, France This paper is about advantages and drawbacks of modifying voltage margin in LVgrids and its impact on grid length, number of substations and losses And it is about a geometric model used to evaluate 4 types of configurations (lowand high density homes in a street and low and high density buildings) Innovations are: possible shift from MV to LV voltage cable length Conclusions are that when the density is high building a strong LV grid (with lowvoltage margin) is fine, in “thin” low density situations more voltage margin reducesthe number of substations98K 
  • 90. CIRED 2013May 8th 20130779 ON THE ASSESSMENT AND MANAGEMENT OF RISK IN WIND FARM DISTRIBUTIONSYSTEMSJorge MARTINEZ, Armando FERREIRA, Germany/USA This paper is about the advantages of introducing a more realistic risk assessmentapproach to real-world wind farms avoiding technically advanced approaches. And it is also about the main limitations of probabilistic methods when analysing theelectrical balance of plant (EBoP) of one or a few wind farms. Innovations are proposing two actions:- Adjusting the failure rate λ of the Poisson/ exponential distribution of each component- Including analysis of high impact low probability (HILP) events Conclusions are- A comprehensive risk assessment of a wind farm is proposed- The main limitations of conventional probabilistic methods when analyzing one or only a fewwind farms are identified and a number of actions being proposed to mitigate the limitations.99K 
  • 91. CIRED 2013May 8th 20130787 IMPROVING DISTRIBUTION NETWORK ANALYSIS WITH NEW AMR-BASED LOAD PROFILESAntti MUTANEN Pertti JÄRVENTAUSTA Matti KÄRENLAMPI Pentti JUUTI, Finland This paper describes two alternative methods for calculating AMR based load profiles. Bothload profiling methods models the load temperature dependency and random variationseparately.- The first method used AMR measurements to update the existing customer class loadprofiles but kept the customer classification unchanged- The second method used k-means clustering to update both the load profiles and customerclassification.- Individual load profiles were formed for large and abnormally behaving customers. Hourly measurements from two Finnish distribution companies have been used. Innovations: inclusion of seasonal temperature dependency Conclusion: The new AMR based load profiles were better than the original load profiles.When forecasting future loads, the cluster profiles had the best average fit. No significantimprovement in peak load forecasting capability was detected when compared with theupdated load profiles. Challenge remains for peak load forecasting of the customer and distribution transformer.100 K
  • 92. CIRED 2013May 8th 20130816 Investigating the potential impact of superconducting distribution networksM Elsherif, UK This paper is about practical aspects of installing HTS equipment and new networkdesigns to reduce power loss and capital cost in the future And it is about distribution grid voltage levels of 132kV, 33kVand 11kV withoverhead lines and cables and 3 cases investigated a) remove the 33kV byexpanding the 11kV, b) remove the 33kV by expanding the 132kV and c) partly(half) remove the 11kV by expanding the 33kV by using HTS transformers andcables Innovations are the use of HTS transformers and cables, new network designs Conclusions are high capital cost savings and loss reduction when using HTStechnology in the distribution grid although the risks (operation) are higher101K 
  • 93. CIRED 2013May 8th 20130827 CAPACITY VALUE OF DISTRIBUTED GENERATION FOR NETWORKCAPACITY PLANNINGChris DENT Peter DAVISON Simon BLAKE, UK This paper proposes Effective Load Carrying Capability (ELCC) as a metric for visualisingthe contribution of distributed generation to reliability of supply within the framework of theGreat Britain P2/6 distribution network planning standard. This is in analogy with definitionsof capacity value used at transmission level. ELCC (applied at transmission level) is used to make the capacity value of an additionalgenerator specific Concepts of capacity value may be used to visualise the contribution of DG to distributionnetwork reliability within the framework of a P2/6-like standard Innovations: introduction of ELLC as a metric for visualsing the contribution of DG toreliability of supply Conclusions: future work is needed and should investigate the development of practicalplanning standards based on the insights gained.102K
  • 94. CIRED 2013May 8th 20130848 Experiences from implementing a risk based maint. strategy using an integratednetwork info. and maint. systemNordgård, Solum, Langdal, NORWAY This paper is about the implementation of a risk based maintenance strategy at aNorwegian DSO Conclusions are that a risk based maintenance strategy saves money compared toa fixed interval based maintenance strategy.103K
  • 95. CIRED 2013May 8th 2013(861) Evaluation Of The Impact Of Electric Vehicles On DistributionSystems Combining Deterministic And Probabilistic Approaches Brasil Methodology for assessment of the impacts on the distribution network faced withthe presence of electric vehicles (EV) Allocation of load of EV is through deterministic and probabilistic algorithms. Paper considers- Level of EV Penetration scenarios (2010 – 2020)- Capacity and load curves of the batteries- Spatial Allocation of EV Charging Stations- Impact Evaluation in the Distribution Network- sub transmission lines, HV/MV SS transformers, MV primary network,MV/LV transformers, LV secondary network- diagnostics, load, voltage profile, imbalance, losses Practical overview of project- Some language issues104K
  • 96. CIRED 2013May 8th 20130888 SHORT-TERM NETWORK PLANNING OF DISTRIBUTION SYSTEMWITH PHOTOVOLTAICYalin HUANG Emil HAGSTRÖM Karin Alvehag Alberto Fernández Martínez Ying He, Sweden This paper aims to identify distribution network planning rules related to connection of PV.The planning rules are relatively easy to apply (hand calculations) Simple rules (guidelines) are developed for connection of PV in radial LV networks. Therules are based on DC approach of the network equations (only the resistance of connectionand distribution transformer are considered).Only voltage constraints (voltage limits) are consideredThe maximum PV connection can be hand calculated (using the rules/guidelines The rules are validated using extensive simulations Innovations: not really. Conclusions: The proposed rules/guidelines provide good results for estimating themaximum acceptable new DG in a network with several DG already installed.K
  • 97. CIRED 2013May 8th 20131063 INTEGRATED AC/DC NETWORK PLANNINGMOUSAVIZADEH Mahmoud Reza HAGHIFAM, Iran This paper is about economic design of hybrid AC/DC distribution networks forbipolar LVDC system configurations, area with different load densities and differentpenetrations of distributed generation sources, considering various kinds of loads. And it is also about using generic algorithm to determine optimal connectionconfiguration of loads, DG to the AC and DC substations. Innovations are : Conclusions are- Through simulation results showing that hybrid AC/DC network implementation is moreeconomic than pure AC and DC network.- Using power electronic devices in low voltage level can improve distribution systemeconomics.106K 
  • 98. CIRED 2013May 8th 2013(1211) Utilisation Of Energy Storages To Secure Electricity Supply In ElectricityDistribution Networks Finland utilisation of energy storages in the improvement of supply security by networkreliability model using Monte Carlo simulation. Considers overhead MV and LV and low density of customers, so with high failurefrequencies, and little power Storage is used to overcome momentary interruptions, manual switching times (and(beginning of longer interruptions). Methodology or setting of control and protection are not described In case network a considerable proportion of the interruptionscan be cut with relatively small energy storages. Methodology usefuldata (thus business case) non-Dutch.107K
  • 99. CIRED 2013May 8th 20131237 Flex. Dynamics in clusters of res. Demand response and DGMacDougall, Kok, Warmer, Roossien, NETHERLANDS This paper is about TNO’s Power Matcher solution. It claims to investigate availableflexibility in aggregated loads. It tries to do this through simulations. Innovations are unclear and limited: not clear whether this is ‘real’ measurements orsimulation. It is unclear what is meant by flexibility and how time shift of load istaken into account. The results hardly say anything on dynamics. Conclusions are that if you use flexibility at a certain time, this will limit the availableflexibility at a later moment.108K
  • 100. CIRED 2013May 8th 2013(1285) Strategic long term planning of asset investments in distributionnetworks using the ASP tool Sweden This paper describes the ASP tool (Asset Strategy Planning) and the importance oftrustable and reliable data from various departments within the company. Describes data organization, organizational procedures, etc Simulates how various efforts in maintenance and / or investments affect the assetstock status, SAIDI and the cost picture for longer periods. ASP benefits are:- Control over network conditions and cost- Improved communications- Common language- Obvious basis for decision109K
  • 101. CIRED 2013May 8th 20131361 Prob. Grid planning with consideration of dispersed generation and electric vehiclesProbst, Tenbohlen, Seel, Braun, GERMANY This paper presents duration curves of load profile effects of PV and EV in lowvoltage grid. Some of those are based on measurements Additionally, it describes how this should and could be taken into account in gridplanning, albeit not too detailed. Conclusion is that the dimensioning of the LV grid should take PV and EV intoaccount.110K
  • 102. CIRED 2013May 8th 20131392 Synthetic three-phase load profilesREEZE, HOFMANN, GERMANY This paper is about the modification of a method for the generation of individualstochastic load profiles to gain synthetic three-phase load profiles which takeaccount of unbalance. An individual profile is created for each house connectionwithin the grid so that the different consumption behaviour in the domestic homes isconsidered. Power flow calculations are used to determine the effects of unbalancedloads. It is concluded that the presented method offers a possibility for the examination ofdistribution grids with unbalanced loading.111K 
  • 103. CIRED 2013May 8th 2013(1495) Definition and Validation of Key Performance Indicators to Assess theEffectiveness of “Smarting Actions” on a Distribution Network Italy Systematic application of quantification of KPI’s in planning- A first set of KPIs associated to environmental aspects- network efficiency;- renewable generation integration;- greenhouse gasses emission.- Other KPIs can be defined considering technical aspects related to quality aspects- voltage profile improvement;- line loading optimization;- reactive power flow reduction. Applied to- the application of FACTS devices- the increasing of network rated voltage (with DER)- the control of reactive power from renewable generation Test Case: Cigré grid and Optimal Power Flow studies Comparison of different KPI’s (each as %) unclear (at first reading)112K
  • 104. CIRED 2013May 8th 2013(1500) Distribution Network Planning In Presence OfFast Charging Stations For EV Italy Fast Charging Station (FCS) requires high power (>=50 kW) and must be connectedto MV. Paper describes practical case study about consequences. The simple direct connection of FCS to MV distribution may cause significantinvestments for the DNO. Correct power demand profiles are important, otherwise, the network investmentwould be overestimated or underestimated, or cause power quality deterioration.So, in-depth studies should be performed on future behavior of EV’s drivers. mitigating solutions should be deeply investigated, e.g. “soft” connection of FCSthrough integration of dedicated energy storage devices. Optimal allocation andsizing of the FCS may be fruitful to reduce investments, without omitting thepotential benefits brought by the active management of the distribution network. Uncertainties are still growing, introduced by renewable generation andunconventional loads, and probabilistic approaches are becoming essential.113K
  • 105. CIRED 2013May 8th 2013114L
  • 106. CIRED 2013May 8th 20130058 ELECTRICAL LOAD FORECASTS IN LONG-TERM AND IMPACT ON LOADMANAGEMENT APPLICATIONBENDARY, MAHMOUD, EL-SHEIKH, EGYPT This paper is about assessing the impact of demand side management when is isapplied at different sectors: residential, commercial, public, government, agriculture,industrial and total load. Daily forecasts are made using three techniques: AdaptiveNetwork Fuzzy Inference System, Artifical Neural Network and Regressiontechnique. The ANFIS technique is found to be most suitable.115L
  • 107. CIRED 2013May 8th 20130087 An integrated interval arithmetic approach for reactive power compensation of radialdistribution feedersM. Abouelsaad, Egypt This paper is about the application of a mathematical technique to addressuncertainties (due to load fluctuation) for optimal sizing and capacitor placing indistribution feeders for reactive power compensation And it is about medium voltage and economic optimisation Innovations are: faster calculation method Conclusions are: theoretical (simulation) achieves cost saving116L
  • 108. CIRED 2013May 8th 2013(132) Effect Of Financial And Technical Uncertainty On Distribution NetworkReconstruction Project Selection Iran paper is focused on the effect of uncertainty on projects NPV. Focus on four typesof uncertainty: demand, interest rate, energy price and project effectivenessuncertainty. The ENS and power loss reduction is strongly related to network load,so energy demand change has an effect on distribution network projects profitability.Very non-european figures and example. Weight of each criterion in final decision can be determined by multi criteria decisionmaking (MCDM) methods like analytic hierarchy process (AHP) and TOPSIS. Butthis is not further described. study substantiates claim that a great many of attractive projects will not beprofitable unless the energy price considerably increases over time, especially indeveloping countries with high interest rate.117L
  • 109. CIRED 2013May 8th 20130176 Reduction of Energy Losses in Electrical Distribution SystemsHamed EMARA,Egypt KASSEM, Mohammed BADR, Egypt, Salwa ALI AHMED, Egypt This paper is about minimization of power losses in an distribution system.Causes of technical and non-technical losses are described.Reduction of technical losses are considered by reconfiguration of the distribution system Reduction of technical losses is seen as an minimization problem: minimize power systemlosses by reconfiguring the distribution systemThe solver is based on GA (Genetic Algorithm).PRAO (tool developed by EdF) is used The method is applied to a distribution network a Cairo (Egypt) region Innovations: none Conclusions: the applied GA method works.118L
  • 110. CIRED 2013May 8th 20130249 EFFICIENT FORECAST SYSTEM FOR DISTRIBUTED GENERATORS WITHUNCERTAINTIES IN THE PRIMARY ENERGY SOURCERUEDA-MEDINA, PADILHA-FELTRIN, MANTOVANI, BRAZIL This paper proposes an efficient forecasting system for DGs with uncertainties in theprimary energy source (e.g. wind/pv). The power generation uncertainty of theseDGs is reduced by running a multi-objective optimization algorithm in multipleprobabilistic scenarios combining the Monte Carlo method and Markov models. Withthe outcome of the power generation profiles, load flow calculations are performedto investigate losses.119L
  • 111. CIRED 2013May 8th 20130415 PREDICTIVE ASSESSMENT OF POWER CONTINUITY INDICATORSRicardo MESSIAS Sofia PINTO, Portugal This paper describes a method to predict a Power Continuity Indicator (PCI), takingbased on three drivers: aging of network components, past investments andweather conditions. The description of the method is unclear. Innovations: the idea to predict power continuity indicators taking into accountvarious aspect such as weather conditions, past investment, condition and/or agingof network components is very challenging. Conclusions: The DSO could improve its insight about the impact of each driver intheir results. The impact of a management strategic option on the results can bedetermimed to a certain extent.120 L
  • 112. CIRED 2013May 8th 20130487 THE CHALLENGES IN DEVELOPING A SMART GRID ROADMAP FOR THEDISTRIBUTION NETWORK OF IRANSEYEDFARSHI, Sheyda; POURMOSTADAM, Kaveh - Iran This paper is about the need for a smart grid roadmap for the distribution network ofIran and the technical and non-technical challenges which have to be faced in orderto develop the roadmap And it is about the three phases through which the road map should be developed Conclusions are:- Phase 1 consists of conducting research and performing pilot projects- Phase 2 is about implementing AMI, communication and control technologies and performing pilotprojects with the implementation of DER in distribution networks- In Phase 3 smart metering equipment should be installed at customers, demand response should beimplemented and the network should be fully equipped to support the implementation of distributedgeneration and121L
  • 113. CIRED 2013May 8th 20130559 THE ANALYSIS OF THE INFORMATION NEEDED FOR THEPLANNING OF ACTIVE DISTRIBUTION SYSTEMM. Fan, Z. Zhang, T. Tian, China This paper is about the information systems and available information which isnecessary to be used on the planning and optimization of Active Distribution System(ADS). And it is about the differences between Passive Distribution Networks (PDN) andADS in detail especially in the information requirements Innovation is a simplified the future information model for ADS planning. Conclusions are the development of information systems for ADS should closelytrack the development of a variety of new type electricity customers, make full use ofsmart meters to collect, aggregate and mining information.122L 
  • 114. CIRED 2013May 8th 20130851 DG ALLOCATION BASED ON MODIFIED NODAL PRICE WITHCONSIDERATION OF LOSS AND RELIABILITY USING PSOMIRI LARIMI, HAGHIFAM, IRAN This paper proposes a multi-objective optimization to determine the optimal size andlocation of distributed generation in the distribution network to minimize load supplycost and enhance reliability improvement. The losses and marginal loss costs are minimized. Particle swarm optimization isused to solve the optimization problem. It is concluded that the optimal buses for DG placement are further away from themain bus.123L
  • 115. CIRED 2013May 8th 2013(857) Mathematical Solutions For Electricity Networks In A Low CarbonFuture UK Novel analytical methods will be required in order to optimise the use of householdlevel data. Paper briefly outlines some mathematical techniques which will play akey role in better understanding the customer’s behaviour and create solutions forsupporting the network at the LV substation level. Use of smart meter data Clustering, forecasting, Smart Control of Storage Looks specialized, but is more generic, some overview but no details. Low Carbon not emphasized.124L
  • 116. CIRED 2013May 8th 20130897 INDUSTRIAL LOAD SCHEDULING IN SMART POWER GRIDSBAHRAMI, Shahab; KHAZAELI, Farid; PARNIANI, Mostafa; Iran This paper is about a new industrial load management strategy based on a modifiedcost function The novel load scheduling algorithm is developed in order to achieve a near optimalscheduling by taking into account industrial users satisfaction, dynamic electricitypricing and constraints regarding to electricity generation capacity Innovations:- Industrial load management is studied from a new point of view, namely taking into account amulti-objective optimization problem to maximize the customers satisfaction and minimizeindustrial sector cost- A new optimization algorithm is proposed Conclusions:- The novel approach reduces peak load, regarding the impacts of load rates on the price andcustomer satisfaction- The proposed algorithm has near-optimum results with the high convergence speed125L
  • 117. CIRED 2013May 8th 20131035 Impact of load and DER management on microgrid reliabilityTalari, Haghifam, IRAN This paper shows that LV microgrids can be run in islanded or connected mode, andpresents a way of economic optimization of running the microgrid. Additionally, it takes reliability considerations into account as well. The study is based on a hypothetical microgrid, and it is unclear how this relates toreality. Conclusion is that the performance of the microgrid can be improved by using loadmanagement and switching between islanded and connected mode.126L
  • 118. CIRED 2013May 8th 2013(1072) Reliability Analysis Of Distribution Network InvestmentsSweden Reliability analysis in distribution (50 kV to 130 kV?) grids, in context of newSwedish regulation. “standard” analysis, including breakers and voltage dips. Conclusions are about typical cases127L
  • 119. CIRED 2013May 8th 20131178 ANALYSIS OF THE OPTIONS TO REDUCE THE INTEGRATION COSTS OFREN. GEN. IN DISTRIBUTION NETWORKSAntoine MINAUD, Christophe GAUDIN, ERDF - FRANCE This paper is about analyzing the cost of DG/RES integration(mainly PV and wind)in the MV and LV networks And it is about studying innovative solutions (reactive power control, active powercontrol) to reduce these costs Innovations are local reactive power control / curtailment to reduce costs ofintegration distributed generation Conclusions are:- Local reactive power control should gain 20-40% on MV reinforcement costs and 10-20% onLV reinforcement costs- Curtailment of active power should gain 30% on MV reinforcement costs and 10-20% on LVreinforcement costs128L
  • 120. CIRED 2013May 8th 20131243 PLANNED-ORIENTED YEARLY SIMULATION OF ENERGY STORAGE OPERATION INDISTRIBUTION SYSTEM FOR PROFIT MAXIMIZATION, VOLTAGE REGULATION AND RESERVEPROVISIONNINGSeddik Yassine ABDELOUADOUD - France This paper is about an algorithmic function suitable for planning purposes thatshould stimulate the use of electrical storage in the market operation And is it about the potential role of storage in the distribution networks, amethodology to optimize the use of storage and applying this methodology to a casestudy Conclusions are: this research requires further investigations in terms of improvingthe computational efficiency of the algorithm, adding other storage applications tothe model and integration it in an exhaustive distribution system planning process129L
  • 121. CIRED 2013May 8th 20131245 SMART GRIDS IMPLEMENTATION PLAN IN SLOVENIAN DISTRIBUTIONNETWORKSBostjan BLAZIC - SLOVENIA This paper presents a proposal for the implementation of smart grid concepts inSlovenian distribution networks The most relevant technologies and concepts are identified, an implementation planis proposed and costs are evaluated Innovations are smart grid concepts Conclusions:- Implementation of smart grids could enable to lower the planned distribution networkinvestments from 4.2 billion to 3.7 billion €- Most of the smart grid benefits occur on the distribution network side130L
  • 122. CIRED 2013May 8th 20131284 Technical analyses of network structures regarding decentralized feed-inM Aigner, Austria This paper is about (PQ) effects on low voltage networks with a high feed-in of RES(PV-inverters, small wind and hydro) for different future generation and consumptionscenarios And it is about validation the outcome of the simulations with measurements in arural network (Austria) in with a medium sized generator with adjustable powerfactor Innovations are absent Conclusions are active power mainly determines voltage change, reactive poweronly limited but changes the current load of the network131L
  • 123. CIRED 2013May 8th 20131428 ASSESSMENT OF THE INVESTMENT EFFORT IN HV AND MVNETWORKS TO REDUCE ENERGY LOSSESJosé Carvalho Martins José Ribeiro da Silva Carlos Alberto Santos Francisco Cravo Branco J. Nuno Fidalgo Manuel A.Matos Mário J. Couto , Portugal This paper describes a methodology to select the most adequate reinforcement investmentsin HV and MV network lines, based on a cost/benefit analysis.The cost are related to reinforcement costs, the benefit to revenues related to avoided loss.Key part in the methodology is the classification of MV networks according to the lossreduction potential.Then, MV networks having the larges loss reduction potential are selected for a moredetailed analysis. Innovations: none Conclusions: reinforcement investments in HV networks causes a larger global lossreduction than those in MV networks.132L

×