New PD measurement method for high power transformer PDM in service operation

Partial discharge measurement is a kind of effective condition check method for high power transformer. Normally, when a high power transformer needs to be checked by partial discharge measurement periodically, outage is required. Here, a newly developed measurement method for transformer is introdu...

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Bibliographic Details
Main Authors: Min Chen, Koji Urano, Huang Song-bo, Jinno, A.
Format: Conference Proceeding
Language:English
Subjects:
bushing
capacitive coupling
Capacitive sensors
Capacitors
Frequency
high frequency CT (HFCT)
Insulators
outage
partial discharge (PD)
Partial discharge measurement
partial discharge measurement (PDM)
Partial discharges
PDM sensor
Power measurement
Power transformer insulation
Power transformers
pulse current
Pulse transformers
transformer
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Summary:Partial discharge measurement is a kind of effective condition check method for high power transformer. Normally, when a high power transformer needs to be checked by partial discharge measurement periodically, outage is required. Here, a newly developed measurement method for transformer is introduced in which a new kind of capacitive coupling sensor is applied. The sensor consists of a pair of metal plates and a high frequency CT, which can be installed at the flange of the high voltage bushing of the transformer during the transformer in commercial service operation, without any outage.
DOI:10.1109/CMD.2008.4580436