Title of article :
Application of extension theory to PD pattern recognition in high-voltage current transformers
Author/Authors :
Wang، Mang-Hui نويسنده , , Ho، Chih-Yung نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
8
From page :
1939
To page :
1946
Abstract :
This paper presents a novel partial-discharge (PD) recognition method based on the extension theory for highvoltage cast-resin current transformers (CRCTs). First, a commercial PD detector is used to measure the threedimensional (3-D) PD patterns of the high-voltage CRCTs, then three data preprocessing schemes that extract relevant features from the raw 3-D-PD patterns are presented for the proposed PD recognition method. Second, the matter-element models of the PD defect types are built according to PD patterns derived from practical experimental results. Then, the PD defect in a CRCT can be directly identified by degrees of correlation between the tested pattern and the matter-element models which have been built up. To demonstrate the effectiveness of the proposed method, comparative studies using a multilayer neural network and k-means algorithm are conducted on 150 sets of field-test PD patterns of 23-kV CRCTs with rather encouraging results.
Keywords :
model , Hilbert transform , Hardy space , subspace , admissible majorant , shift operator , inner function
Journal title :
IEEE TRANSACTIONS ON POWER DELIVERY
Serial Year :
2005
Journal title :
IEEE TRANSACTIONS ON POWER DELIVERY
Record number :
61892
Link To Document :
بازگشت