Title :
A new technique for power transformer protection using discrete dyadic wavelet transform
Author :
Yang, Zhonghao ; Liu, J.Z. ; Xinzhou, Dong ; Jiang, F. ; Bo, Z.Q. ; Chin, N.F.
Author_Institution :
Tsinghua Univ., Beijing, China
Abstract :
As one of the most important elements in modern power system, the transformer is responsible for the successful power transmission and distribution. Any unscheduled repair work, especially replacement of a faulty transformer, is very expensive and time consuming. Starting from here, this paper discusses an approach to introduce a wavelet-based view to identify inrush and other transformer faults. Furthermore, by careful cataloging and comparing, the authors found distinct characteristics corresponding to fault and inrush, on the basis of which they proposed a generalized new criterion for inrush identification, that can help to enhance protection reliability. The outcome of numerical simulation shows the effectiveness of the algorithm
Keywords :
discrete wavelet transforms; fault diagnosis; numerical analysis; power system faults; power system protection; power system reliability; power transformer protection; discrete dyadic wavelet transform; inrush fault identification; inrush identification; numerical simulation; power distribution; power transformer protection; power transmission; protection reliability enhancement;
Conference_Titel :
Developments in Power System Protection, 2001, Seventh International Conference on (IEE)
Conference_Location :
Amsterdam
Print_ISBN :
0-85296-732-2
DOI :
10.1049/cp:20010180