Methods for locating ground faults and insulation degradation condition in energy conversion systems
Abstract
Methods for determining a ground fault or insulation degradation condition within energy conversion systems are described. A method for determining a ground fault within an energy conversion system may include, in part, a comparison of baseline waveform of differential current to a waveform of differential current during operation for a plurality of DC current carrying conductors in an energy conversion system. A method for determining insulation degradation within an energy conversion system may include, in part, a comparison of baseline frequency spectra of differential current to a frequency spectra of differential current transient at start-up for a plurality of DC current carrying conductors in an energy conversion system. In one embodiment, the energy conversion system may be a photovoltaic system.
- Inventors:
- Issue Date:
- Research Org.:
- GE Global Research, Niskayuna, New York (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1209350
- Patent Number(s):
- 9103865
- Application Number:
- 13/726,730
- Assignee:
- General Electric Company (Niskayuna, NY)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
H - ELECTRICITY H02 - GENERATION H02H - EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- DOE Contract Number:
- EE0000572
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2012 Dec 26
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 30 DIRECT ENERGY CONVERSION
Citation Formats
Agamy, Mohamed, Elasser, Ahmed, Galbraith, Anthony William, and Harfman Todorovic, Maja. Methods for locating ground faults and insulation degradation condition in energy conversion systems. United States: N. p., 2015.
Web.
Agamy, Mohamed, Elasser, Ahmed, Galbraith, Anthony William, & Harfman Todorovic, Maja. Methods for locating ground faults and insulation degradation condition in energy conversion systems. United States.
Agamy, Mohamed, Elasser, Ahmed, Galbraith, Anthony William, and Harfman Todorovic, Maja. Tue .
"Methods for locating ground faults and insulation degradation condition in energy conversion systems". United States. https://www.osti.gov/servlets/purl/1209350.
@article{osti_1209350,
title = {Methods for locating ground faults and insulation degradation condition in energy conversion systems},
author = {Agamy, Mohamed and Elasser, Ahmed and Galbraith, Anthony William and Harfman Todorovic, Maja},
abstractNote = {Methods for determining a ground fault or insulation degradation condition within energy conversion systems are described. A method for determining a ground fault within an energy conversion system may include, in part, a comparison of baseline waveform of differential current to a waveform of differential current during operation for a plurality of DC current carrying conductors in an energy conversion system. A method for determining insulation degradation within an energy conversion system may include, in part, a comparison of baseline frequency spectra of differential current to a frequency spectra of differential current transient at start-up for a plurality of DC current carrying conductors in an energy conversion system. In one embodiment, the energy conversion system may be a photovoltaic system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {8}
}
Works referenced in this record:
Solar power generation apparatus and control method therefor
patent, July 2003
- Kondo, Hiroshi; Manabe, Naoki; Takehara, Nobuyoshi
- US Patent Document 6,593,520
Technique for high-impedance ground fault detection at the common DC bus of multi-axis drives
patent, July 2010
- Mirafzal, Behrooz
- US Patent Document 7,751,993
High voltage cable testing method
patent, July 2010
- Lindsey, Robert Wayne
- US Patent Document 7,764,067
Direct Current Arc Fault Circuit Interrupter, Direct Current Arc Fault Detector, Noise Blanking Circuit for a Direct Current Arc Fault Circuit Interrupter, and Method of Detecting Arc Faults
patent-application, June 2011
- Hastings, Jerome K.; Zuercher, Joseph C.; Pahl, Birger
- US Patent Application 12/637873; 20110141644
Protection, Monitoring or Indication Apparatus for a Direct Current Electrical Generating Apparatus or a Plurality of Strings
patent-application, December 2011
- Zuercher, Joseph C.; Birger, Paul; Luebke, Charles J.
- US Patent Document 12/795032; 20110301772
Arc Fault Mitigation for Photovoltaic Systems
patent-application, July 2012
- Larson, Brett E.; Scott, Gary W.
- US Patent Application 13/004962; 20120174961