Grid Connected Inverter Anti Islanding Test Results For General Electric Inverter Based Interconnection Technology
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Grid Connected Inverter Anti Islanding Test Results For General Electric Inverter Based Interconnection Technology
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Author :
language : en
Publisher:
Release Date : 2005
Grid Connected Inverter Anti Islanding Test Results For General Electric Inverter Based Interconnection Technology written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
This report covers testing of General Electric-proposed anti-islanding schemes. The objectives were to: (1) Validate the effectiveness of the proposed anti-islanding schemes; (2) Conduct parametric evaluation of the schemes with respect to control settings and load conditions, including controller gains, load power levels, and load quality factors; and (3) Examine the ability of the distributed resource to ride through a low-voltage condition on the utility grid.
Grid Connected Inverter Anti Islanding Test Results For General Electric Inverter Based Interconnection Technology
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Author : Zhihong Ye
language : en
Publisher:
Release Date : 2005
Grid Connected Inverter Anti Islanding Test Results For General Electric Inverter Based Interconnection Technology written by Zhihong Ye and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Distributed generation of electric power categories.
Practical Handbook Of Photovoltaics
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Author : Augustin McEvoy
language : en
Publisher: Elsevier
Release Date : 2003-10-30
Practical Handbook Of Photovoltaics written by Augustin McEvoy and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003-10-30 with Science categories.
As part of the growing sustainable and renewable energy movement, the design, manufacture and use of photovoltaic devices is increasing in pace and frequency. The Handbook of Photovoltaics will be a 'benchmark' publication for those involved in the design, manufacture and use of these devices.The Handbook covers the principles of solar cell function, the raw materials, photovoltaic systems, standards, calibration, testing, economics and case studies. The editors have assembled a cast of internationally-respected contributors from industry and academia. The report is essential reading for: Physicists, electronic engineers, designers of systems, installers, architects, policy-makers relating to photovoltaics.
Power Electronics In Renewable Energy Systems And Smart Grid
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Author : Bimal K. Bose
language : en
Publisher: John Wiley & Sons
Release Date : 2019-08-06
Power Electronics In Renewable Energy Systems And Smart Grid written by Bimal K. Bose and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-06 with Technology & Engineering categories.
The comprehensive and authoritative guide to power electronics in renewable energy systems Power electronics plays a significant role in modern industrial automation and high- efficiency energy systems. With contributions from an international group of noted experts, Power Electronics in Renewable Energy Systems and Smart Grid: Technology and Applications offers a comprehensive review of the technology and applications of power electronics in renewable energy systems and smart grids. The authors cover information on a variety of energy systems including wind, solar, ocean, and geothermal energy systems as well as fuel cell systems and bulk energy storage systems. They also examine smart grid elements, modeling, simulation, control, and AI applications. The book's twelve chapters offer an application-oriented and tutorial viewpoint and also contain technology status review. In addition, the book contains illustrative examples of applications and discussions of future perspectives. This important resource: Includes descriptions of power semiconductor devices, two level and multilevel converters, HVDC systems, FACTS, and more Offers discussions on various energy systems such as wind, solar, ocean, and geothermal energy systems, and also fuel cell systems and bulk energy storage systems Explores smart grid elements, modeling, simulation, control, and AI applications Contains state-of-the-art technologies and future perspectives Provides the expertise of international authorities in the field Written for graduate students, professors in power electronics, and industry engineers, Power Electronics in Renewable Energy Systems and Smart Grid: Technology and Applications offers an up-to-date guide to technology and applications of a wide-range of power electronics in energy systems and smart grids.
Project Development In The Solar Industry
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Author : Albie Fong
language : en
Publisher: CRC Press
Release Date : 2012-12-05
Project Development In The Solar Industry written by Albie Fong and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-05 with Business & Economics categories.
This book written by practicing experts in the solar renewable energy field enables readers to understand both renewable project development and the primary stumbling blocks in the process. It also contains a detailed description of all renewable energy technologies, the development activities required, and an overview to software & mapping tools commonly used in the industry. The book will not only serve as a guide to project developers but it will also assist policy makers and stakeholders in understanding the process involved to turn the sun into electricity and the reasons for supporting solar.
New Jersey Register
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Author :
language : en
Publisher:
Release Date : 2004
New Jersey Register written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Delegated legislation categories.
Experimental Evaluation Of Pv Inverter Anti Islanding With Grid Support Functions In Multi Inverter Island Scenarios
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Author :
language : en
Publisher:
Release Date : 2016
Experimental Evaluation Of Pv Inverter Anti Islanding With Grid Support Functions In Multi Inverter Island Scenarios written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
As PV and other DER systems are connected to the grid at increased penetration levels, island detection may become more challenging for two reasons: 1.) In islands containing many DERs, active inverter-based anti-islanding methods may have more difficulty detecting islands because each individual inverter's efforts to detect the island may be interfered with by the other inverters in the island. 2.) The increasing numbers of DERs are leading to new requirements that DERs ride through grid disturbances and even actively try to regulate grid voltage and frequency back towards nominal operating conditions. These new grid support requirements may directly or indirectly interfere with anti-islanding controls. This report describes a series of tests designed to examine the impacts of both grid support functions and multi-inverter islands on anti-islanding effectiveness. Crucially, the multi-inverter anti-islanding tests described in this report examine scenarios with multiple inverters connected to multiple different points on the grid. While this so-called 'solar subdivision' scenario has been examined to some extent through simulation, this is the first known work to test it using hardware inverters. This was accomplished through the use of power hardware-in-the-loop (PHIL) simulation, which allows the hardware inverters to be connected to a real-time transient simulation of an electric power system that can be easily reconfigured to test various distribution circuit scenarios. The anti-islanding test design was a modified version of the unintentional islanding test in IEEE Standard 1547.1, which creates a balanced, resonant island with the intent of creating a highly challenging condition for island detection. Three common, commercially available single-phase PV inverters from three different manufacturers were tested. The first part of this work examined each inverter individually using a series of pure hardware resistive-inductive-capacitive (RLC) resonant load based anti-islanding tests to determine the worst-case configuration of grid support functions for each inverter. A grid support function is a function an inverter performs to help stabilize the grid or drive the grid back towards its nominal operating point. The four grid support functions examined here were voltage ride-through, frequency ride-through, Volt-VAr control, and frequency-Watt control. The worst-case grid support configuration was defined as the configuration that led to the maximum island duration (or run-on time, ROT) out of 50 tests of each inverter. For each of the three inverters, it was observed that maximum ROT increased when voltage and frequency ride-through were activated. No conclusive evidence was found that Volt-VAr control or frequency-Watt control increased maximum ROT. Over all single-inverter test cases, the maximum ROT was 711 ms, well below the two-second limit currently imposed by IEEE Standard 1547-2003. A subsequent series of 244 experiments tested all three inverters simultaneously in the same island. These tests again used a procedure based on the IEEE 1547.1 unintentional islanding test to create a difficult-to-detect island condition. For these tests, which used the two worst-case grid support function configurations from the single-inverter tests, the inverters were connected to a variety of island circuit topologies designed to represent the variety of multiple-inverter islands that may occur on real distribution circuits. The interconnecting circuits and the resonant island load itself were represented in the real-time PHIL model. PHIL techniques similar to those employed here have been previously used and validated for anti-islanding tests, and the PHIL resonant load model used in this test was successfully validated by comparing single-inverter PHIL tests to conventional tests using an RLC load bank.
Experimental Evaluation Of Pv Inverter Anti Islanding With Grid Support Functions In Multi Inverter Island Scenarios
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Author :
language : en
Publisher:
Release Date : 2016
Experimental Evaluation Of Pv Inverter Anti Islanding With Grid Support Functions In Multi Inverter Island Scenarios written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
As PV and other DER systems are connected to the grid at increased penetration levels, island detection may become more challenging for two reasons: 1.) In islands containing many DERs, active inverter-based anti-islanding methods may have more difficulty detecting islands because each individual inverter's efforts to detect the island may be interfered with by the other inverters in the island. 2.) The increasing numbers of DERs are leading to new requirements that DERs ride through grid disturbances and even actively try to regulate grid voltage and frequency back towards nominal operating conditions. These new grid support requirements may directly or indirectly interfere with anti-islanding controls. This report describes a series of tests designed to examine the impacts of both grid support functions and multi-inverter islands on anti-islanding effectiveness. Crucially, the multi-inverter anti-islanding tests described in this report examine scenarios with multiple inverters connected to multiple different points on the grid. While this so-called 'solar subdivision' scenario has been examined to some extent through simulation, this is the first known work to test it using hardware inverters. This was accomplished through the use of power hardware-in-the-loop (PHIL) simulation, which allows the hardware inverters to be connected to a real-time transient simulation of an electric power system that can be easily reconfigured to test various distribution circuit scenarios. The anti-islanding test design was a modified version of the unintentional islanding test in IEEE Standard 1547.1, which creates a balanced, resonant island with the intent of creating a highly challenging condition for island detection. Three common, commercially available single-phase PV inverters from three different manufacturers were tested. The first part of this work examined each inverter individually using a series of pure hardware resistive-inductive-capacitive (RLC) resonant load based anti-islanding tests to determine the worst-case configuration of grid support functions for each inverter. A grid support function is a function an inverter performs to help stabilize the grid or drive the grid back towards its nominal operating point. The four grid support functions examined here were voltage ride-through, frequency ride-through, Volt-VAr control, and frequency-Watt control. The worst-case grid support configuration was defined as the configuration that led to the maximum island duration (or run-on time, ROT) out of 50 tests of each inverter. For each of the three inverters, it was observed that maximum ROT increased when voltage and frequency ride-through were activated. No conclusive evidence was found that Volt-VAr control or frequency-Watt control increased maximum ROT. Over all single-inverter test cases, the maximum ROT was 711 ms, well below the two-second limit currently imposed by IEEE Standard 1547-2003. A subsequent series of 244 experiments tested all three inverters simultaneously in the same island. These tests again used a procedure based on the IEEE 1547.1 unintentional islanding test to create a difficult-to-detect island condition. For these tests, which used the two worst-case grid support function configurations from the single-inverter tests, the inverters were connected to a variety of island circuit topologies designed to represent the variety of multiple-inverter islands that may occur on real distribution circuits. The interconnecting circuits and the resonant island load itself were represented in the real-time PHIL model. PHIL techniques similar to those employed here have been previously used and validated for anti-islanding tests, and the PHIL resonant load model used in this test was successfully validated by comparing single-inverter PHIL tests to conventional tests using an RLC load bank.
Study And Development Of Anti Islanding Control For Grid Connected Inverters
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Author : Zhihong Ye
language : en
Publisher:
Release Date : 2004
Study And Development Of Anti Islanding Control For Grid Connected Inverters written by Zhihong Ye and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Distributed generation of electric power categories.
Analysis Of Local Anti Islanding Detection Methods For Photovoltaic Generators In Distribution Systems
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Author : Milad Kahrobaee
language : en
Publisher:
Release Date : 2019
Analysis Of Local Anti Islanding Detection Methods For Photovoltaic Generators In Distribution Systems written by Milad Kahrobaee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
In the current decade, technology innovations and cost reduction of inverter-based Distributed Energy Resources (DERs) have led to higher integration of distributed energy storage and photovoltaic (PV) solar power systems. Increasing growth in PV penetration to the distribution system can raise operational and safety concerns especially in case of an unintended islanding. In general, standards require distributed generators (DGs) to detect islanding from the main grid and cease to energize the local system. Multiple methods have been introduced in the literature to detect these islands reliably and quickly. In order to connect an inverter to distribution system, inverter should pass certain certification tests such as UL 1741 certification test. The anti-islanding test in UL 1741 standard tests only one type of load over a limited range of loading conditions with a single inverter and lumped load and no impedances in between them. The overall goal of this thesis is to determine those parameters to which run-on times (ROTs) are relatively insensitive and thus do not need to be emphasized in certification testing or risk of islanding studies. This thesis presents a generic MATLAB Simulink inverter model and studies sensitivity of anti-islanding tests to parameters such as inverter location, inverter operating point, load location, load type and circuit impedance. Inverters in these studies are equipped with Group 2A and Group 2B anti-islanding methods. The key contributions in this thesis can be summarized as follows: A comprehensive review of anti-islanding techniques in the literature. An anti-islanding detection model was developed in MATLAB software with at least one method from different groups of anti-islanding methods; the model can be used further for industrial applications and research purposes. The result of analyses indicated that the level of phase-phase imbalance, constant-power load, harmonic-current load and irradiance level have a low or negligible impact on anti-islanding and can be omitted from these studies. These findings are expected to lower the cost and improve the speed of these studies, in large distribution systems.