Title:
A high-pressure insulation level monitoring device and a high-pressure insulation monitor method
Document Type and Number:
Japanese Patent JP5972097
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a high voltage insulation monitoring device and a high voltage insulation monitoring method capable of detecting insulation deterioration with high accuracy.SOLUTION: A high voltage insulation monitoring device 1, which detects insulation deterioration of a high voltage distribution line, comprises: a zero-phase-sequence current transformer 2b which detects a zero-phase current of a high voltage distribution line L1; a converter 2c which detects a load current of each phase of the high voltage distribution line L1; and a correction unit 3a which uses characteristics of the load current of each phase detected by the converter 2c and the zero-phase-sequence current transformer 2b to correct the zero-phase current detected by the zero-phase-sequence current transformer 2b so that an error of the zero-phase current resulting from influence of the load current of each phase is eliminated.
Inventors:
Teruyoshi Kamata
Kenji Ono
Masami Suzuki
Atsushi Ishikawa
Jun Nagata
Hayata Shiki
Kenji Ono
Masami Suzuki
Atsushi Ishikawa
Jun Nagata
Hayata Shiki
Application Number:
JP2012176392A
Publication Date:
August 17, 2016
Filing Date:
August 08, 2012
Export Citation:
Assignee:
Kanto Electric Safety Association
Saneisha Manufacturing Co., Ltd.
Saneisha Manufacturing Co., Ltd.
International Classes:
H02H3/347; G01R31/02; H02H3/00; H02H3/34
Domestic Patent References:
| JP2010086747A | ||||
| JP2011137718A |
Attorney, Agent or Firm:
Shinichi Ogawa
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