Hawaiian Electric Advanced Inverter Grid Support Function Laboratory Validation And Analysis
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Hawaiian Electric Advanced Inverter Grid Support Function Laboratory Validation And Analysis
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Author :
language : en
Publisher:
Release Date : 2016
Hawaiian Electric Advanced Inverter Grid Support Function Laboratory Validation And Analysis 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.
The objective for this test plan was to better understand how to utilize the performance capabilities of advanced inverter functions to allow the interconnection of distributed energy resource (DER) systems to support the new Customer Self-Supply, Customer Grid-Supply, and other future DER programs. The purpose of this project was: 1) to characterize how the tested grid supportive inverters performed the functions of interest, 2) to evaluate the grid supportive inverters in an environment that emulates the dynamics of O'ahu's electrical distribution system, and 3) to gain insight into the benefits of the grid support functions on selected O'ahu island distribution feeders. These goals were achieved through laboratory testing of photovoltaic inverters, including power hardware-in-the-loop testing.
Hawaiian Electric Advanced Inverter Test Plan Result Summary
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Author :
language : en
Publisher:
Release Date : 2016
Hawaiian Electric Advanced Inverter Test Plan Result Summary 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.
This presentation is intended to share the results of lab testing of five PV inverters with the Hawaiian Electric Companies and other stakeholders and interested parties. The tests included baseline testing of advanced inverter grid support functions, as well as distribution circuit-level tests to examine the impact of the PV inverters on simulated distribution feeders using power hardware-in-the-loop (PHIL) techniques. hardware-in-the-loop (PHIL) techniques.
Advanced Inverter Voltage Controls Simulation And Field Pilot Findings
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Author :
language : en
Publisher:
Release Date : 2018
Advanced Inverter Voltage Controls Simulation And Field Pilot Findings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
This report describes work performed by the Hawaiian Electric Companies and the National Renewable Energy Laboratory (NREL) to model and simulate advanced inverter grid-support functions and to validate and expand on those simulations through a field pilot study. This work builds on earlier research, referred to as the Voltage Regulation Operational Strategies study. The objective of both is to investigate functionalities available in most photovoltaic (PV) inverters to modulate active and reactive power autonomously based on local voltage measurements for the purpose of mitigating off-nominal grid voltage conditions. Specifically of interest are volt/volt-ampere reactive (VAR) control and volt/watt control, the effect of those functions on quasi-steady-state feeder voltages, and the impact of the functions on PV energy production. Because volt/VAR and volt/watt control autonomously adjust inverter output based on local conditions without requiring communication with any other devices, they are good candidates to increase PV hosting capacity when it is limited by voltage constraints in a feeder with very large numbers of PV systems.
Power Hardware In The Loop Evaluation Of Pv Inverter Grid Support On Hawaiian Electric Feeders Preprint
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Author :
language : en
Publisher:
Release Date : 2017
Power Hardware In The Loop Evaluation Of Pv Inverter Grid Support On Hawaiian Electric Feeders Preprint written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
As more grid-connected photovoltaic (PV) inverters become compliant with evolving interconnections requirements, there is increased interest from utilities in understanding how to best deploy advanced grid-support functions (GSF) in the field. One efficient and cost-effective method to examine such deployment options is to leverage power hardware-in-the-loop (PHIL) testing methods. Two Hawaiian Electric feeder models were converted to real-time models in the OPAL-RT real-time digital testing platform, and integrated with models of GSF capable PV inverters that were modeled from characterization test data. The integrated model was subsequently used in PHIL testing to evaluate the effects of different fixed power factor and volt-watt control settings on voltage regulation of the selected feeders. The results of this study were provided as inputs for field deployment and technical interconnection requirements for grid-connected PV inverters on the Hawaiian Islands.
Inverter Testing For Verification Of Hawaiian Electric Rule 14h Preprint
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language : en
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Release Date : 2019
Inverter Testing For Verification Of Hawaiian Electric Rule 14h Preprint written by 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.
As utilities increasingly require inverters perform grid-supportive functions, it is challenging to ensure that those functions are properly configured in the field. This paper details inverter testing carried related to Hawaiian Electric's latest rule 14H interconnection requirements to validate that field installation procedures result in the intended advanced inverter behavior. The latest Volt-VAR, Volt-Watt, and frequency-Watt curves in Hawaiian Electric's Source Requirement Document (SRD) V1.1 for UL 1741 Supplement A were tested for two inverter manufacturers used in the utility territory. Both inverters were found to be largely compliant, though several discrepancies were identified and reported to the manufacturers to be addressed. The results are presented and discussed here.
Residential Advanced Photovoltaic Inverter Pilot Study Results For Select Distribution Secondaries In Hawai I Preprint
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Author :
language : en
Publisher:
Release Date : 2018
Residential Advanced Photovoltaic Inverter Pilot Study Results For Select Distribution Secondaries In Hawai I Preprint written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Penetration levels of residential rooftop solar photovoltaic (PV) generation on the Hawaiian island of Oahu have increased significantly in recent years with many circuits now at the limits of their PV hosting. NREL and Hawaiian Electric have used this opportunity to deploy advanced inverters at new customer installations that would not otherwise have been approved as a pilot study to gain first-hand operational field data and experience on the impact of inverter-based grid support functions. At each customer location, the deployed advanced inverters were remotely controlled and monitored. Additionally, customer AMI (smart meter) and secondary distribution transformer data was also available for the analysis. The analysis focused on quantifying the customer behind-the-meter voltage rise due to PV production, determining the customer voltage rise with advanced inverters in unity power factor as well as advanced grid support function modes, and estimating the curtailment when inverters have Volt-VAR and Volt-Watt enabled. The results show that: 1) Behind-the-meter voltage rise is often not negligible. 2) An inverter's operating point on a Volt-VAR/Volt-Watt curve depends strongly on the design of the secondary system on which it is installed. 3) The mitigation of voltage rise on the secondary system using Volt-VAR may not be effective if only a small proportion of inverters have grid support enabled, or if the reactance/resistance (X/R) ratio of the grid is low. 4) Volt-Watt curtailment can be estimated using co-located irradiance sensors but there may be opportunities to estimate it using inverter internal electrical measurements. Estimated curtailment is very low for the locations analyzed to date.
Advanced Grid Support Functionality Testing For Florida Power And Light
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Author :
language : en
Publisher:
Release Date : 2017
Advanced Grid Support Functionality Testing For Florida Power And Light written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
This report describes the results of laboratory testing of advanced photovoltaic (PV) inverter testing undertaken by the National Renewable Energy Laboratory (NREL) on behalf of the Florida Power and Light Company (FPL). FPL recently commissioned a 1.1 MW-AC PV installation on a solar carport at the Daytona International Speedway in Daytona Beach, Florida. In addition to providing a source of clean energy production, the site serves as a live test bed with 36 different PV inverters from eight different manufacturers. Each inverter type has varied support for advanced grid support functions (GSFs) that are becoming increasingly commonplace, and are being required through revised interconnection standards such as UL1741, IEEE1547, and California (CA) Rule 21. FPL is interested in evaluating the trade-offs between different GSFs, their compliance to emerging standards, and their effects on efficiency and reliability. NREL has provided a controlled laboratory environment to undertake such a study. This work covered nine different classes of tests to compare inverter capabilities and performance for four different inverters that were selected by FPL. The test inverters were all three-phase models rated between 24-36 kW, and containing multiple PV input power point trackers. Advanced grid support functions were tested for functional behavior, and included fixed power factor operation, voltage-ride through, frequency ride-through, volt-var control, and frequency-Watt control. Response to abnormal grid conditions with GSFs enabled was studied through anti-islanding, fault, and load rejection overvoltage tests. Finally, efficiency was evaluated across a range of operating conditions that included power factor, output power, and input voltage variations. Test procedures were derived from requirements of a draft revision of UL741, CA Rule 21, and/or previous studies at NREL. This reports summarizes the results of each test case, providing a comparative performance analysis between the four test inverters. Inverters were mostly able to meet the requirements of their stated GSF capabilities, with deviations from expected results discussed throughout the report. There were mixed results across the range of abnormal tests, and results were often dependent on the capability of each test inverter to deploy the GSFs of interest. Detailed test data has been provided to FPL to support future decision making with respect to inverter selection and GSF deployment in the field.
Integrating More Solar With Smart Inverters Preprint
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Author :
language : en
Publisher:
Release Date : 2018
Integrating More Solar With Smart Inverters Preprint written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
In Hawai'i, the relatively high cost of electricity costs coupled with various incentives have made it cost-effective to install solar photovoltaics (PV) on residential homes and larger central-station PV plants. On some of the islands, PV has reached over 50% of the installed generation capacity base. To make sure these inverter-based PV plants can maintain stable and safe operations, new smart inverter functionality is being evaluated and demonstrated at significant scale across the islands This paper describes research conducted to validate high PV penetration scenarios with smart inverters and recent progress on the use of these advanced inverter grid support functions in actual power grids in Hawai'i.
Validation And Testing Of Advanced Grid Services By Inverter Coupled Resources
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Author :
language : en
Publisher:
Release Date : 2019
Validation And Testing Of Advanced Grid Services By Inverter Coupled Resources written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Electric inverters categories.
The Frequency Watt Function Simulation And Testing For The Hawaiian Electric Companies
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Author :
language : en
Publisher:
Release Date : 2017
The Frequency Watt Function Simulation And Testing For The Hawaiian Electric Companies written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
This interim report describes research related to frequency-watt control of solar photovoltaic (PV) inverters conducted under the U.S. Department of Energy's Grid Modernization Laboratory Consortium (GMLC) by a regional partnership for Hawaii. The purpose of this report is to inform an ongoing discussion around frequency-watt control activation in Hawaii.