Title:
部分放電測定方法及びその装置
Document Type and Number:
Japanese Patent JP4470157
Kind Code:
B2
Abstract:
Prior to the measurement of partial discharge, a voltage detected by the antenna is inputted into a spectrum analyzer, a phase difference between an operating voltage and a power supply of the spectrum analyzer is obtained by phase domain analysis using the spectrum analyzer. Based on the phase difference and the voltage phase shift associated with input impedance of the signal converter circuit, the time axis displayed on the screen of the spectrum analyzer is compensated. After the compensation has been carried out, the voltage detected by the antenna is inputted into the spectrum analyzer, the partial discharge pattern which synchronizes with the operating voltage is measured by phase domain analysis using the spectrum analyzer.
Inventors:
Tomohiro Moriyama
Tatsuro Kato
Toshiaki Rokunohe
Endo Keisaku
Ryoichi Shinohara
Tatsuro Kato
Toshiaki Rokunohe
Endo Keisaku
Ryoichi Shinohara
Application Number:
JP2004044926A
Publication Date:
June 02, 2010
Filing Date:
February 20, 2004
Export Citation:
Assignee:
Japan ae Power Systems Co., Ltd.
International Classes:
G01R31/12
Domestic Patent References:
| JP2001016722A | ||||
| JP6230067A |
Attorney, Agent or Firm:
Hirotsugu Yoshioka