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Title: In-situ fault detection apparatus and method for an encased energy storing device

Abstract

An apparatus and method for detecting a breach in an electrically insulating surface of an electrically conductive power system enclosure within which a number of series connected energy storing devices are disposed. The energy storing devices disposed in the enclosure are connected to a series power connection. A detector is coupled to the series connection and detects a change of state in a test signal derived from the series connected energy storing devices. The detector detects a breach in the insulating layer of the enclosure by detecting a state change in the test signal from a nominal state to a non-nominal state. A voltage detector detects a state change of the test signals from a nominal state, represented by a voltage of a selected end energy storing device, to a non-nominal state, represented by a voltage that substantially exceeds the voltage of the selected opposing end energy storing device. Alternatively, the detector may comprise a signal generator that produces the test signal as a time-varying or modulated test signal and injects the test signal into the series connection. The detector detects the state change of the time-varying or modulated test signal from a nominal state, represented by a signal substantiallymore » equivalent to the test signal, to a non-nominal state, representative by an absence of the test signal.« less

Inventors:
 [1];  [2];  [3];  [1];  [4]
  1. Stillwater, MN
  2. Montreal, CA
  3. Vadnais Heights, MN
  4. Saint-Luc, CA
Issue Date:
Research Org.:
United States Advanced Battery Consortium, Dearborn, MI (US)
OSTI Identifier:
873145
Patent Number(s):
6100702
Assignee:
3M Innovative Properties Company (Saint Paul, MN); Hydro-Quebec Corporation (Montreal)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
DOE Contract Number:  
FC02-91CE50336
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
in-situ; fault; detection; apparatus; method; encased; energy; storing; device; detecting; breach; electrically; insulating; surface; conductive; power; enclosure; series; connected; devices; disposed; connection; detector; coupled; detects; change; signal; derived; layer; nominal; non-nominal; voltage; signals; represented; selected; substantially; exceeds; opposing; alternatively; comprise; generator; produces; time-varying; modulated; injects; equivalent; representative; absence; storing device; detection apparatus; series connected; electrically insulating; electrically conductive; signal generator; insulating layer; fault detection; detector detects; energy storing; series connection; signal derived; substantially equivalent; storing devices; connected energy; insulating surface; power connection; /324/

Citation Formats

Hagen, Ronald A, Comte, Christophe, Knudson, Orlin B, Rosenthal, Brian, and Rouillard, Jean. In-situ fault detection apparatus and method for an encased energy storing device. United States: N. p., 2000. Web.
Hagen, Ronald A, Comte, Christophe, Knudson, Orlin B, Rosenthal, Brian, & Rouillard, Jean. In-situ fault detection apparatus and method for an encased energy storing device. United States.
Hagen, Ronald A, Comte, Christophe, Knudson, Orlin B, Rosenthal, Brian, and Rouillard, Jean. Sat . "In-situ fault detection apparatus and method for an encased energy storing device". United States. https://www.osti.gov/servlets/purl/873145.
@article{osti_873145,
title = {In-situ fault detection apparatus and method for an encased energy storing device},
author = {Hagen, Ronald A and Comte, Christophe and Knudson, Orlin B and Rosenthal, Brian and Rouillard, Jean},
abstractNote = {An apparatus and method for detecting a breach in an electrically insulating surface of an electrically conductive power system enclosure within which a number of series connected energy storing devices are disposed. The energy storing devices disposed in the enclosure are connected to a series power connection. A detector is coupled to the series connection and detects a change of state in a test signal derived from the series connected energy storing devices. The detector detects a breach in the insulating layer of the enclosure by detecting a state change in the test signal from a nominal state to a non-nominal state. A voltage detector detects a state change of the test signals from a nominal state, represented by a voltage of a selected end energy storing device, to a non-nominal state, represented by a voltage that substantially exceeds the voltage of the selected opposing end energy storing device. Alternatively, the detector may comprise a signal generator that produces the test signal as a time-varying or modulated test signal and injects the test signal into the series connection. The detector detects the state change of the time-varying or modulated test signal from a nominal state, represented by a signal substantially equivalent to the test signal, to a non-nominal state, representative by an absence of the test signal.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

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