DocumentCode
3278690
Title
A New Method of On-line Medium Frequency Partial Discharge Monitoring for Power Transformer Based on Double Sensors Directionally Coupling Signal
Author
Liao, Yancqun ; Xu, Yang ; Qiu, Changrong ; Xi, Baofeng ; Liu, Xinying ; Feng, Yi ; Fang, Qiong
fYear
2007
fDate
8-13 July 2007
Firstpage
596
Lastpage
599
Abstract
This paper introduces an on-line monitoring method for power transformers, using double magnetic core current sensors directionally coupling signal to limit interference using a polarity discrimination method. The transient models of transformer windings are set up, and considering the characteristic of the current sensors and transformer windings, the testing frequency band is chosen from 1MHz to3MHz. The reliability of polarity discrimination method to limit interference is verified over this frequency range.
Keywords
Couplings; Frequency; Interference; Magnetic cores; Magnetic sensors; Monitoring; Partial discharges; Power transformers; Sensor phenomena and characterization; Windings;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid Dielectrics, 2007. ICSD '07. IEEE International Conference on
Conference_Location
Winchester, UK
Print_ISBN
1-4244-0750-8
Electronic_ISBN
1-4244-0751-6
Type
conf
DOI
10.1109/ICSD.2007.4290884
Filename
4290884
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