Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1991-03-01
1993-10-26
Strecker, Gerard R.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324520, 324536, 324554, 324557, 174 11R, 364492, G01R 3108, H02G 1528
Patent
active
052569764
ABSTRACT:
A power apparatus has a network formed by a plurality of interconnected components being, e.g., one or more high voltage conductors in a casing of a metal filled with an insulating gas. Detectors are provided which detect electromagnetic waves, which are generated if there is a fault. The electromagnetic waves are analyzed to detect the location of the fault. The analysis may make use of attenuation coefficients corresponding to each component of the network to extrapolate between detectors on either side of the fault and/or to compare with predetermined wave strengths. A map of the network may be stored in a suitable memory to assist in the calculation of the fault location, and the memory may also store the attenuation coefficients themselves. The location of the fault may then be displayed by a suitable display, to give the time variation of the fault.
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Endo Fumihiro
Ishikawa Toshio
Iwaasa Shuzo
Tagawa Yoshinori
Utsumi Tomoaki
Do Diep
Hitachi , Ltd.
Strecker Gerard R.
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