This document provides an overview of grid interconnection and commissioning test procedures for solar PV rooftop systems in India. It discusses the key factors in determining interconnection and metering based on state regulations and distribution utilities. It also outlines the applicable standards and regulations, technical specifications including single line diagrams, and test requirements for grid connectivity and commissioning. Specifically, it describes the unintentional islanding functionality test that verifies the inverter will cease exporting power within 2 seconds of loss of grid connection and not resume for over 60 seconds after reconnection.
Renewable energy and grid integration energy transitionNarinporn Malasri
Energy Regulatory Commission Thailand : Energy-Related Policies and Activities
Renewable energy and grid integration and energy transition in Thailand. IMPACT of Renewable Connection such as FULL GRID CONNECTION CAPACITIES, REVERSE POWER FLOWS, VOLTAGE CONTROL IN DISTRIBUTION GRID
PROTECTION COORDINATION IN DISTRIBUTION GRID.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: IEEE 1547 and Microgrids, presented by Tom Key, EPRI, Baltimore, MD, August 29-31, 2016.
One promising means of reducing the transmission and distribution losses is through the distributed generation of electricity closer to the end user such as net metering schemes. And the other approach is managing customer consumption of electricity in response to supply conditions, for example, stimulating electricity customers to reduce their consumption at critical times or in response to market prices, thereby reducing the peak demand for electricity. In order to assist consumers to make informed decisions on how to manage and control their electricity consumption, consumers should have a system to monitor their real-time electricity consumption as well as a communication network with the service provider. But traditional electricity meters only record energy consumption progressively over time, normally in monthly basis and provide no information of when the energy was consumed. Therefore the necessity of Advanced Metering Infrastructure (AMI) has been emerged to address the above matters. Nowadays most of the nations are looking to rollout into Smart Meters enabling faster automated communication of information to consumers on their real time electricity consumption, and to service providers.
a smart meter electronically measures how much energy is being used and how much it costs, and then communicates it to the energy supplier and the customer. Smart meters can also enable the provision of new services to consumers as it can record consumption of electric energy in intervals of an hour or less, and also gather data for remote reporting using two-way communication between the meter and central system.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: Micro grid design: Considerations & interconnection studies, presented by Mobolaji Bello, EPRI, Baltimore, MD, August 29-31, 2016.
Josh Long: Minimum Cyber Security Requirements for a 20 MW Photo Voltaic Field EnergyTech2015
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Josh Long: Minimum Cyber Security Requirements for a 20 MW Photo Voltaic Field
Brian Patterson: The role of Direct Current micro-grids and data centers for efficiency and resilience
Irv Badr: Managing Risk Factors in Critical Infrastructure
Tues.1040 am states role in protecting electric grids from emp and gmd with a...EnergyTech2015
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Impact of high level penetration of photovoltaics on Power systemMuwaf_5
Discusses the impact of high penetration levels of PV system, and its effects on the grid. It has detrimental effects on system stability and cause power quality issues. The remedial measure is discussed
Hybrid Controller | Design 150KW PV with DG1:700KWEyad Adnan
Hybrid Fuel /PV controller is specifically designed to power systems that combine diesel and renewable forms of power generation.
see complete project:150KW PV design
eyad_adnan@yahoo.com
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: PAR 2030.8 Draft IEEE Standard for the Testing of Microgrid Controllers, presented by Ward Bower, Ward Bower Innovations LLC, Baltimore, MD, August 29-31, 2016.
Renewable energy and grid integration energy transitionNarinporn Malasri
Energy Regulatory Commission Thailand : Energy-Related Policies and Activities
Renewable energy and grid integration and energy transition in Thailand. IMPACT of Renewable Connection such as FULL GRID CONNECTION CAPACITIES, REVERSE POWER FLOWS, VOLTAGE CONTROL IN DISTRIBUTION GRID
PROTECTION COORDINATION IN DISTRIBUTION GRID.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: IEEE 1547 and Microgrids, presented by Tom Key, EPRI, Baltimore, MD, August 29-31, 2016.
One promising means of reducing the transmission and distribution losses is through the distributed generation of electricity closer to the end user such as net metering schemes. And the other approach is managing customer consumption of electricity in response to supply conditions, for example, stimulating electricity customers to reduce their consumption at critical times or in response to market prices, thereby reducing the peak demand for electricity. In order to assist consumers to make informed decisions on how to manage and control their electricity consumption, consumers should have a system to monitor their real-time electricity consumption as well as a communication network with the service provider. But traditional electricity meters only record energy consumption progressively over time, normally in monthly basis and provide no information of when the energy was consumed. Therefore the necessity of Advanced Metering Infrastructure (AMI) has been emerged to address the above matters. Nowadays most of the nations are looking to rollout into Smart Meters enabling faster automated communication of information to consumers on their real time electricity consumption, and to service providers.
a smart meter electronically measures how much energy is being used and how much it costs, and then communicates it to the energy supplier and the customer. Smart meters can also enable the provision of new services to consumers as it can record consumption of electric energy in intervals of an hour or less, and also gather data for remote reporting using two-way communication between the meter and central system.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: Micro grid design: Considerations & interconnection studies, presented by Mobolaji Bello, EPRI, Baltimore, MD, August 29-31, 2016.
Josh Long: Minimum Cyber Security Requirements for a 20 MW Photo Voltaic Field EnergyTech2015
EnergyTech2015.com Track 4 Session 3 RESILIENT APPLICATIONS Moderator: Mike Delamare
Josh Long: Minimum Cyber Security Requirements for a 20 MW Photo Voltaic Field
Brian Patterson: The role of Direct Current micro-grids and data centers for efficiency and resilience
Irv Badr: Managing Risk Factors in Critical Infrastructure
Tues.1040 am states role in protecting electric grids from emp and gmd with a...EnergyTech2015
EnergyTech2015.com Track 4 Session 2 SHAPING POLICY ON CRITICAL INFRASTRUCTURE PROTECTION AND RECOVERY Moderator: Mike DeLamare Panelists will briefly present current policy efforts, or the effects of policy on providers. This will be followed by Q&A from the audience. Panelists: Andrea Boland: Discuss current and pending Legislation for the State of Maine as compared to other States: /Maine John Ostrich: Speaking on the Space Weather Policy and Action Plan Patrick Shaw: Addressing the business continuity and the emergency management consequences of long-term power outages Kevin Goodman: Policy effects on Power and Data Centers Chuck Manto: Policy as a catalyst for technical innovations
Impact of high level penetration of photovoltaics on Power systemMuwaf_5
Discusses the impact of high penetration levels of PV system, and its effects on the grid. It has detrimental effects on system stability and cause power quality issues. The remedial measure is discussed
Hybrid Controller | Design 150KW PV with DG1:700KWEyad Adnan
Hybrid Fuel /PV controller is specifically designed to power systems that combine diesel and renewable forms of power generation.
see complete project:150KW PV design
eyad_adnan@yahoo.com
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: PAR 2030.8 Draft IEEE Standard for the Testing of Microgrid Controllers, presented by Ward Bower, Ward Bower Innovations LLC, Baltimore, MD, August 29-31, 2016.
Net metering requirements in punjab for grid interactive rooftop SPV Power PlantHarish Sharma
All the consumers of the State Distribution licensee or PSPCL who intend to encourage solar energy and set up solar PV plants at available places on roof-tops of Individual households, industries, Government or Semi-Government or Local Body offices, commercial establishments, institutions, residential complexes shall be eligible with project capacity ranging from minimum 1 KWp upto 1MWp (AC side) with or without battery back-up support. Consumers may generate solar power for self consumption and may feed excess power into the grid to be adjusted.
Voltage Stability & Power Quality Assessment of Distributed Generation Based ...ijsrd.com
This paper demonstrated the power quality & voltage stability problems associated with the renewable based distribution generation systems and how the Flexible AC Transmission System (FACTS) device such as Static Synchronous Compensator (STATCOM) play an important role in Power Quality Improvement. First we simulated the wind farm system without STATCOM and after the system simulated with STATCOM. We use the MATLAB/Simulink software for Simulation.
Low-voltage ride-through for a three-phase four-leg photovoltaic system using...IJECEIAES
With the innovative progresses in power electronics in recent years, photovoltaic (PV) systems emerged as one of the promising sources for electricity generation at the distribution network. Nonetheless, connection of PV power plants to the utility grid under abnormal conditions has become a significant issue and novel grid codes should be recommend. The low-voltage ride-through (LVRT) capability is one of the challenges faced by the integration of PV power stations into electrical grid under abnormal conditions. This work firstly provides a discussion on recent control schemes for PV power plants to enhance the LVRT capabilities. Next, a control scheme for a three-phase four-leg grid-connected PV inverter under unbalanced grid fault conditions using synchronous reference frame proportional integral (SRFPI) controller is proposed. Simulation studies are performed to investigate the influence of the control strategy on the PV inverter.
Presentation from the EPRI-Sandia Symposium on Secure and Resilient Microgrids: PAR 2030.7 Draft Standard for Specification of Microgrid Controllers, presented by Ward Bower, Ward Bower Innovations, Baltimore, MD, August 29-31, 2016.
Optimization Technique for Power Quality Improvement using DSTATCOM Neural Ne...ijtsrd
As the power demand has been increasing rapidly, power generation and transmission are being affected due to limited resources, environmental restrictions and other losses. soft computing the techniques of correcting the supply voltage sag, swell and interruption in a distributed system. At present, a wide range of very flexible controllers, which capitalize on newly available power electronics components, are emerging for custom power applications. Power electronic based equipment aimed at enhancing the reliability and quality of power flows in low voltage distribution networks. A control algorithm is used for the extraction of the fundamental weighted value of active and reactive power components. Using digital signal processor the DSTATCOM is developed and its performance of DSTATCOM is found to be satisfactory for various types of loads. Hareram Mishra | Manju Gupta | Dr. Anuprita Mishra "Optimization Technique for Power Quality Improvement using DSTATCOM (Neural Network Approach) – A Review" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-5 , August 2021, URL: https://www.ijtsrd.com/papers/ijtsrd45219.pdf Paper URL: https://www.ijtsrd.com/engineering/other/45219/optimization-technique-for-power-quality-improvement-using-dstatcom-neural-network-approach- – -a-review/hareram-mishra
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Session 10 grid interconnections & commissioning test procedures
1. Partnership To Advance Clean Energy-Deployment (PACE-D)
Technical Assistance Program
Presented by
USAID PACE-D TA Program
Apr-18
Solar PV Rooftop Training Program For Entrepreneurs
Session:
Grid Interconnection & Commissioning Test Procedures
2. Contents
Interconnection and metering – What are the deciding
factors?
Single Line Diagrams for different types of interconnections
Applicable standards and regulations for grid connectivity
Interconnection technical specification and requirements
4. Interconnection & Metering – Deciding Factors
1
State regulation by SERC
2
Distribution utility whose grid would be utilized
3
Capacity of SPVRT plant
4
5
Program framework – gross or net metering
Voltage levels where energy to be injected
5. Interconnection & Metering – Examples of 3 States
Supply
Voltage
Madhya Pradesh Rajasthan Maharashtra
230V, 1 phase Up to 3kW Up to 5kW Up to 8 kW / 40 A
415V, 3 phase >3kW to 112 kW >5kW to 18.65 kW >8 kW to 150 kW
>8 kW to 80 kW
11kV, 3 phase > 112kW to 300kW >18.65kW to 50kW >150 kW to 1000
kVA
>80 kW to 1000 kVA
33kV, 3 phase >300kW to
10,000kW
>50 kW
10. Single Line Diagram – Gross Metering Using 2
Meters
This is typically a gross metered connection and Meter 2 is export meter
11. Single Line Diagram – Net Metering Using 1 Meter
This is typically a net metered connection and Meter 1 is net meter (bi-directional)
12. Single Line Diagram – Net Metering Using 2 Meters
This is typically a net metered connection as mandated in many state regulations and
Meter 1 is net meter (bi-directional) whereas Meter 2 is Solar (Generation) Meter
13. Single Line Diagram – Net Metering for Multiple
Buildings
This is typically a colony of buildings with number of installations with net metered
connection and all meters are net meters (bi-directional)
14. Single Line Diagram – Gross Metering for Multiple
Buildings
This is typically a gross metered connection and Meter 1 is consumer meter and Meter
2 is Solar (Generation) meter
15. Central Electricity Authority (Technical Standards for Connectivity of the
Distributed Generation Resources) Regulations 2013
IEEE 1547 – Standard for Interconnecting Distributed Resources with Electric
Power System, 2003
Central Electricity Authority (Measures Relating to Safety and Electricity
Supply) Regulations, 2010
Central Electricity Authority (Technical Standards for Connectivity to the grid)
Regulations 2007
IEEE 519: Recommended Practice and Requirements for Harmonic Control in
Electric Power Systems, 2014
Applicable Standards & Regulations for Grid
Connectivity
16. Interconnection Technical Specifications &
Requirements
General Requirements (IEEE 1547 / CEA Regulation 2013)
Voltage Regulations
The distributed resources shall
not actively regulate the
voltage at the point of
interconnection
Synchronization
The distributed resource
synchronized with electric
system shall not cause a
voltage fluctuation at the
point of interconnection
greater than ±5%
Monitoring Provision
Each distributed resource of
250 kVA or more at a single
point of interconnection shall
have provisions for monitoring
its connections status, real
power output, reactive power
output and voltages at the
point of interconnection
17. Interconnection Technical Specifications &
Requirements
General Requirements (IEEE 1547 / CEA Regulation 2013)
Isolation Device
There should be a manually operating isolating switch between distributed generation resource
and electric system, which meets the following requirements:
Allow visible verification that separation has been established
Indicators to show clearly closed and open position
Be readily accessible and be capable of being locked in open position
May not be rated for load-break
Be located at height of 2.44 m above ground level
18. Interconnection Technical Specifications &
Requirements
General Requirements (IEEE 1547 / CEA Regulation 2013)
Interconnect Integrity
Interconnection system shall have the capability to withstand electromagnetic interference
Paralleling device shall withstand 220% of interconnection system rated voltage
Interconnection system shall have the capability to withstand voltage and current surge
19. Interconnection Technical Specifications &
Requirements
Response to Abnormal Conditions (IEEE 1547 / CEA Regulation 2013)
Voltage
Inverter must have over and
under voltage trip functions if
voltage reaches above 110%
or below 80% respectively with
clearing time up to two
seconds
Frequency
Inverter must have over and
under frequency trip functions
if frequency reaches 50.5 Hz
and below 47.5 Hz with a
clearing time of 0.2 seconds
Islanding
Inverter must have function to
prevent formation of
unintended island, and cease
to energise the electricity
system within 2 seconds
20. Interconnection Technical Specifications &
Requirements
Power Quality (IEEE 1547 / CEA Regulation 2013)
Limitation on DC Injection
The rooftop solar and its
interconnection system shall
not inject dc current greater
than 0.5% of the full rated
output current
Limitation of Flicker
The distributed resource shall
not cause objectionable flicker
on the electric system (IEC
61000)
Harmonics
The distributed resource shall
not inject harmonic current
greater than 5% at the electric
system (IEEE 519)
21. Commissioning Tests
All commissioning tests shall be performed based on written test procedures of
equipment manufacturer / system integrator
A visual inspection shall be made to ensure that the system earthing is adequate as
per standard / regulation
A visual inspection shall be made to confirm the presence of the isolation device as
required by standard / regulation
The following initial commissioning tests shall be performed on the installed solar PV
rooftop system and grid connected inverter prior to the initial parallel connection to
the grid:
Operability test on the isolation device
Unintentional islanding functionality
22. Unintentional Islanding Functionality Test
If there is more than
one inverter, tests
should be carried out
for each inverter
SPVR system should
produce more than
20% of the rated
output of the SPVRT
Array or the inverter
– whichever is less
This test must be
conducted during
noon time on a
sunny day
23. Unintentional Islanding Functionality Test – Test 1
Test 1: Inverter must cease supplying power within 0.2 seconds of loss of
mains
Step 1:
Keep DC supply from the SPVRT array connected to the inverter
Step 2:
Place the voltage probe in the inverter side of the AC main switch
Step 3:
Turn OFF the main switch, through which inverter is connected to grid
Step 4:
Measure time taken for inverter to cease attempting to export power
with a timing device and record
24. Unintentional Islanding Functionality Test – Test 2
Test 2: Inverter must not resume supplying power until mains have been
present for more than 60 seconds
Step 1:
Keep DC supply from the SPVRT array connected to the inverter
Step 2:
Place the current probe in the inverter side of the AC main switch
Step 3:
Turn ON the main switch, through which inverter is connected to grid
Step 4:
Measure time taken for inverter to re-energize and start exporting
power with a timing device and record
25. 25
Anurag Mishra
Senior Clean Energy Specialist
USAID/India
Email: amishra@usaid.gov
Disclaimer:
This training material is made possible by the support of the American
People through the United States Agency for International
Development (USAID). The contents of this material are the sole
responsibility of Nexant, Inc. and do not necessarily reflect the views of
USAID or the United States Government. This material was prepared
under Contract Number AID-386-C-12-00001.