Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1996-05-30
1998-09-29
Do, Diep N.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324 72, 324535, 324772, G01R 3108
Patent
active
058149988
ABSTRACT:
A device and a method for locating partial discharges in dynamoelectric high-voltage machines and/or high-voltage systems, comprising at least two coupling units (16, 17, 18) which are coupled to mutually spaced measuring points (MP1, MP2, MP3, ES, TS, AKV) of a conductor (2) of the high-voltage machine and/or high-voltage system, and couple out a high-frequency electromagnetic signal produced upon the occurence of partial discharges. The device further comprises an evaluation device which is electrically connected to each coupling unit (16, 17, 18) and records the temporal sequence of the signals coupled out by each coupling unit (16, 17, 18). The place of origin of the partial discharges can be determined from the temporal sequence of the signals, it being possible to enhance the accuracy by additional measurements at further measuring points.
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Gruenewald Peter
Koziel Reinhold
Schimmelpfennig Gerhard
Weidner Juergen
Do Diep N.
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
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