Title:
A partial discharge detecting method and a partial discharge detecting device of electric power machinery
Document Type and Number:
Japanese Patent JP6280105
Kind Code:
B2
Abstract:
A partial discharge detection apparatus detects a plurality of discharge events, finds a time interval between the plurality of discharge events, and determines, where the discharge events occur at a time interval shorter than a threshold time, that a partial discharge has occurred within a metal enclosure, or determines, where the discharge events occur only at a time interval longer than the threshold time, that a discharge has occurred outside the metal enclosure. The partial discharge detection apparatus can thus readily distinguish between a partial discharge that occurs within the metal enclosure of a gas-insulated switchgear and a discharge that occurs outside the metal enclosure.
Inventors:
Manabu Yoshimura
Tatsuya Yabe
Takashi Ito
Tatsuya Yabe
Takashi Ito
Application Number:
JP2015513484A
Publication Date:
February 14, 2018
Filing Date:
November 21, 2013
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G01R31/12; H02B13/065
Domestic Patent References:
| JP2005156452A | ||||
| JP2147970A | ||||
| JP10026650A | ||||
| JP2001074802A | ||||
| JP2012112696A | ||||
| JP2011232288A |
Attorney, Agent or Firm:
Fukami patent office