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Designing the grid of the future by Stefan Kuppers
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Designing the grid of the future by Stefan Kuppers

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  • 1. Influence of Increasing RenewableGeneration on German Distribution GridsFirst experiencesToronto, June 8th 2012Future of Energy Summit – Track 2: Grid of the futureDr. Stefan KüppersRWE Rhein-Ruhr Netzservice GmbH RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 1
  • 2. Ambitious, achievable German targets concerning renewablegeneration and energy efficiencyBasic points of the German energy transition Generation mix 2011 (energy)> Reduction of greenhouse-gas 20 % 18 % emissions by 40% in 2020 and by nuclear 4% lignite 80-95% in 2050 compared to 1990 coal 14 % 25 % gas> 80% renewable generation in 2050; others 35% in 2020 19 % renewable> Reduction of primary energy consumption by 20% until 2020 and by 50% until 2050 compared to 2008 Generation mix 2050 German policy target 20 % (energy)> Reduction of emissions caused by traffic until 2020 by 10% and until 2050 by 40%. 6 Million electrical vehicles in conventional 2030. renewable 80 % Source: AGEB RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 2
  • 3. Increase of renewable generation: Almost half of the consumed power is generated by renewables photovoltaic wind conventional generationGeneration MW 5/25/2012 5/26/2012 5/27/2012 5/28/2012 5/29/2012 > On the last weekend of May 2012 almost half of the consumed energy in Germany was generated by photovoltaic RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 3
  • 4. Local, renewable generation is mostly connected todistribution network Future structure of German supply system> Political driven extension of renewable Foreign Transmission generation reduces the number of country conventional power plants Grid> Large amount of generation is directly fed into distribution grids> Renewable generation produces high grid loads especially within distribution grids Distribution> Strong regionalization of renewable M Grid G M G generation due to dependency on primary energy sources (sun, wind …) M> Feedback from lower to higher grid G M G levels is already occurring today (especially in low load situations)> Distribution grids are mainly effected by today´s energy transition in Germany In 2010 and 2011 there were 250.000/a new PV plants connected! RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 4
  • 5. Smart meter field trial Project: “Mülheim zählt“ „Mülheim zählt“ Monthly data online customer access >Installation and operation of Digital Pictureframe 100.000 Smart Meter >Automatic readout of meter data PC-Software Inhouse communication over distance >Usage of PLC* as a cost- PLC efficient communication Data Concentrator technology MUC >Visualization of customer energy consumption erweiterbar Gas Wasser Wärme Idea >Testing a sustainable, modular, Meter standardized technology concept Targets Option >Transparency of energy consumption >Influence load and generation >Detection of optimization potentials >Standardization of the tested technology*PLC = Powerline communication >Field trial of new products (e.g. tariffs) RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 5
  • 6. Combine local load and generation with market signals Project „E-DeMa“Test laboratory Duisburg: Use of E-DeMa components Test laboratory Essen-Kettwig: „GW2-customer“ with micro-cogeneration in Mülheim Inhouse communication RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 6
  • 7. Smart Grid solutions to face future challengesProject: “Smart Country” 1. Demonstration and validation Smart Solutions 2. Adoption of efficient solutions for planning and operation purposes observability bio gas storage> Observability optimization of network control> Bio Gas Storage decoupling of generation and consumption> Middle-/Low Voltage Voltage Controller Strong cable connection Controller Maximization of asset capacity utilization> Strong cable connection Increase of connection capacity for renewable generation RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 7
  • 8. Extreme flexibility of the system is necessary to balance the future renewable generation Examplary characteristics of not-assessable generation and load (left side) as well as resulting residual load (right side) of a week in april 2030* - Scenario: Energy concept Germany and BMU study 90 not-assessable solar 40 residual loadGW 80 generation and load wind - onshore wind - offshore 30 GW 70 cogeneration biomass 20 60 geothermal 50 water 10 40 load 0 30 37 GW -10 20 10 -20 0 -30 4h Th Fr Sa Th Fr Sa > Renewable generation causes high and fast fluctuations of residual load > Concept for control of renewable generation necessary (partly already existing today) > Flexible and controllable power plants (central and local) and storages needed to follow residual load and to stabilize the system *Source: BDEW-study „Bewertung der Flexibilitäten von Stromerzeugungs- und KWK-Anlagen“; Authors: CONSENTEC and IAEW der RWTH Aachen; October 2011 RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 8
  • 9. Thank you very muchfor your attention!Dr. Stefan KüppersRWE Rhein-Ruhr Netzservice GmbHEmail: stefan.kueppers@rwe.com RWE Rhein-Ruhr Netzservice 8th of June 2012 PAGE 9

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