DEVICE AND METHOD FOR DETECTING PARTIAL DISCHARGE OF ROTARY ELECTRIC MACHINE

WIPO Patent Application WO/2006/019164

A1

A device for detecting partial discharge of a rotary electric machine includes: a metal frame (5) connected to a stator frame (7) of the rotary electric machine; a power line or a neutral point outgoing line (4) arranged in the metal frame (5) and connected to the neutral point of a stator coil (6) or a 3-phase stator coil (6) corresponding to each of the three phases in the stator frame for propagation of a partial discharge signal generated by deterioration of the stator coil (6); a sensor arranged around the power line or the neutral point outgoing line (4) in the metal frame (5) and formed by a rod-shaped antenna (2) from which the partial discharge signal propagating in the power line or the neutral point outgoing line (4) is electrostatically or electromagnetically induced; and a detector (3) for acquiring the signal generated in the sensor, via a signal outgoing line (2) and detecting partial discharge by processing the signal.

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KANEIWA HIROSHI (JP)
SAKAI MASAHIRO (JP)
INOUE YOSHIYUKI (JP)
SEKITO SHINOBU (JP)

PCT/JP2005/015159

February 23, 2006

August 19, 2005

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TOSHIBA KK (JP)
KANEIWA HIROSHI (JP)
SAKAI MASAHIRO (JP)
INOUE YOSHIYUKI (JP)
SEKITO SHINOBU (JP)

G01R31/12

JPH04299052A	1992-10-22
JP2000346916A	2000-12-15
JPS5735768A	1982-02-26
JPH11133096A	1999-05-21
JP2000329833A	2000-11-30
JPS63184407A	1988-07-29
JP2001183411A	2001-07-06
JP2001141773A	2001-05-25

Suzuye, Takehiko c/o SUZUYE & SUZUYE (1-12-9 Toranomo, Minato-ku Tokyo 01, JP)

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