PARTIAL DISCHARGE MEASUREMENT SYSTEM AND PARTIAL DISCHARGE MEASUREMENT METHOD

Title:

PARTIAL DISCHARGE MEASUREMENT SYSTEM AND PARTIAL DISCHARGE MEASUREMENT METHOD

Document Type and Number:

WIPO Patent Application WO/2022/176799

Kind Code:

A1

Abstract:

A partial discharge measurement system (1) according to an embodiment of the present invention is provided with: at least one sensor (6, 7) that detects, in a non-contact manner, a voltage signal propagating through a conductor (4) connected to a rotary electric machine (2); a first band-pass filter (11) for allowing passage of a first frequency component included in the voltage signal obtained by the sensor (6, 7); a second band-pass filter (12) for allowing passage of a second frequency component that is lower than the first frequency component and that is included in the voltage signal obtained by the sensors (6, 7); a phase acquisition unit (22) that acquires the phase waveform (31) of the second frequency component having passed through the second band-pass filter (12); and an output unit (19) for outputting information with which a partial discharge (P) component from the rotary electric machine (2) included in the first frequency component having passed through the first band-pass filter (11) can be identified on the basis of the phase waveform (31).

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Inventors:

TAKANEZAWA MAKOTO (JP)
HARAKAWA TAKASHI (JP)
FUJIMOTO AKIRA (JP)
HIROSHIMA SATOSHI (JP)

Application Number:

PCT/JP2022/005627

Publication Date:

August 25, 2022

Filing Date:

February 14, 2022

Export Citation:

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Assignee:

TOSHIBA KK (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)

International Classes:

H02K11/20; G01R31/12; G01R31/34

Domestic Patent References:

WO2020121600A1

2020-06-18

Foreign References:

JP2006098270A	2006-04-13
JPH0980111A	1997-03-28
JP2005233837A	2005-09-02
KR101333584B1	2013-11-27

Attorney, Agent or Firm:

TOKYO INTERNATIONAL PATENT FIRM (JP)

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