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Title: System and method for islanding detection and prevention in distributed generation

Abstract

Various examples are directed to systems and methods for detecting an islanding condition at an inverter configured to couple a distributed generation system to an electrical grid network. A controller may determine a command frequency and a command frequency variation. The controller may determine that the command frequency variation indicates a potential islanding condition and send to the inverter an instruction to disconnect the distributed generation system from the electrical grid network. When the distributed generation system is disconnected from the electrical grid network, the controller may determine whether the grid network is valid.

Inventors:
; ;
Issue Date:
Research Org.:
Sinewatts, Inc., Charlotte, NC (United States); The University of North Carolina at Charlotte, Charlotte, NC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1457413
Patent Number(s):
9,997,920
Application Number:
14/860,159
Assignee:
Sinewatts, Inc. (Charlotte, NC); The University of North Carolina at Charlotte (Charlotte, NC)
DOE Contract Number:  
EE0006459
Resource Type:
Patent
Resource Relation:
Patent File Date: 2015 Sep 21
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Bhowmik, Shibashis, Mazhari, Iman, and Parkhideh, Babak. System and method for islanding detection and prevention in distributed generation. United States: N. p., 2018. Web.
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Bhowmik, Shibashis, Mazhari, Iman, & Parkhideh, Babak. System and method for islanding detection and prevention in distributed generation. United States.
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Bhowmik, Shibashis, Mazhari, Iman, and Parkhideh, Babak. Tue . "System and method for islanding detection and prevention in distributed generation". United States. https://www.osti.gov/servlets/purl/1457413.
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@article{osti_1457413,
title = {System and method for islanding detection and prevention in distributed generation},
author = {Bhowmik, Shibashis and Mazhari, Iman and Parkhideh, Babak},
abstractNote = {Various examples are directed to systems and methods for detecting an islanding condition at an inverter configured to couple a distributed generation system to an electrical grid network. A controller may determine a command frequency and a command frequency variation. The controller may determine that the command frequency variation indicates a potential islanding condition and send to the inverter an instruction to disconnect the distributed generation system from the electrical grid network. When the distributed generation system is disconnected from the electrical grid network, the controller may determine whether the grid network is valid.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {6}
}
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Works referenced in this record:

Locking frequency band exposure method for islanding detection and prevention in distributed generation
conference, September 2014

  • Mazhari, Iman; Beghou, Lotfi; Enslin, Johan
  • 2014 IEEE Energy Conversion Congress and Exposition (ECCE)
  • DOI: 10.1109/ECCE.2014.6953995

Locking frequency band detection method for grid-tied PV inverter islanding protection
conference, September 2015

  • Mazhari, Iman; Jafarian, Hamidreza; Parkhideh, Babak
  • 2015 IEEE Energy Conversion Congress and Exposition (ECCE)
  • DOI: 10.1109/ECCE.2015.7309939
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