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Title: Ground Fault Overvoltage With Inverter-Interfaced Distributed Energy Resources

Abstract

Ground Fault Overvoltage can occur in situations in which a four-wire distribution circuit is energized by an ungrounded voltage source during a single phase to ground fault. The phenomenon is well-documented with ungrounded synchronous machines, but there is considerable discussion about whether inverters cause this phenomenon, and consequently whether inverters require effective grounding. This paper examines the overvoltages that can be supported by inverters during single phase to ground faults via theory, simulation and experiment, identifies the relevant physical mechanisms, quantifies expected levels of overvoltage, and makes recommendations for optimal mitigation.

Authors:
ORCiD logo; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1349017
Report Number(s):
NREL/JA-5D00-64308
Journal ID: ISSN 0885-8977
DOE Contract Number:
AC36-08GO28308
Resource Type:
Journal Article
Resource Relation:
Journal Name: IEEE Transactions on Power Delivery; Journal Volume: 32; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; transient overvoltage; ground fault overvoltage; inverters; distributed energy resources; distribution protection; effective grounding

Citation Formats

Ropp, Michael, Hoke, Anderson, Chakraborty, Sudipta, Schutz, Dustin, Mouw, Chris, Nelson, Austin, McCarty, Michael, Wang, Trudie, and Sorenson, Adam. Ground Fault Overvoltage With Inverter-Interfaced Distributed Energy Resources. United States: N. p., 2017. Web. doi:10.1109/TPWRD.2016.2577884.
Ropp, Michael, Hoke, Anderson, Chakraborty, Sudipta, Schutz, Dustin, Mouw, Chris, Nelson, Austin, McCarty, Michael, Wang, Trudie, & Sorenson, Adam. Ground Fault Overvoltage With Inverter-Interfaced Distributed Energy Resources. United States. doi:10.1109/TPWRD.2016.2577884.
Ropp, Michael, Hoke, Anderson, Chakraborty, Sudipta, Schutz, Dustin, Mouw, Chris, Nelson, Austin, McCarty, Michael, Wang, Trudie, and Sorenson, Adam. Sat . "Ground Fault Overvoltage With Inverter-Interfaced Distributed Energy Resources". United States. doi:10.1109/TPWRD.2016.2577884.
@article{osti_1349017,
title = {Ground Fault Overvoltage With Inverter-Interfaced Distributed Energy Resources},
author = {Ropp, Michael and Hoke, Anderson and Chakraborty, Sudipta and Schutz, Dustin and Mouw, Chris and Nelson, Austin and McCarty, Michael and Wang, Trudie and Sorenson, Adam},
abstractNote = {Ground Fault Overvoltage can occur in situations in which a four-wire distribution circuit is energized by an ungrounded voltage source during a single phase to ground fault. The phenomenon is well-documented with ungrounded synchronous machines, but there is considerable discussion about whether inverters cause this phenomenon, and consequently whether inverters require effective grounding. This paper examines the overvoltages that can be supported by inverters during single phase to ground faults via theory, simulation and experiment, identifies the relevant physical mechanisms, quantifies expected levels of overvoltage, and makes recommendations for optimal mitigation.},
doi = {10.1109/TPWRD.2016.2577884},
journal = {IEEE Transactions on Power Delivery},
number = 2,
volume = 32,
place = {United States},
year = {Sat Apr 01 00:00:00 EDT 2017},
month = {Sat Apr 01 00:00:00 EDT 2017}
}
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