Partial discharge measurement system and partial discharge measurement method by repeated impulse voltage

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United States of America Patent

PATENT NO 9322881
APP PUB NO 20150015303A1
SERIAL NO

14384759

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Abstract

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An impulse voltage generator uses a predetermined rectangular waveform signal and a high voltage to generate an impulse voltage. The high voltage is obtained by boosting an instruction voltage of the rectangular waveform signal on a per-cycle basis. A partial discharge frequency calculation section receives detection signals based on partial discharges occurring in an object to be measured by the application of the impulse voltage and counts the detection signal on a per-cycle basis as a partial discharge frequency. An application voltage signal observation circuit observes an application voltage signal indicating the impulse voltage applied to the object to be measured. In a first cycle in which the partial discharge frequency reaches a specified frequency or more, a voltage value acquiring section sets, as a partial discharge starting voltage, the peak value of the voltage indicated by the application voltage signal output from the application voltage signal observation circuit.

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Patent Owner(s)

  • KABUSHIKI KAISHA TOSHIBA;TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirose, Tatsuya Inagi, JP 96 554
Hiroshima, Satoshi Kawasaki, JP 8 62
Ogawa, Hiroyuki Tokyo, JP 281 4751
Sakurai, Takayuki Tokyo, JP 53 335
Yoshimitsu, Tetsuo Tokyo, JP 18 60

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