Transformer protection based on fault transient detection

被引:0
|
作者
He, J. H. [1 ]
Ou, Z. J. [1 ]
Bo, Z. Q. [2 ]
Caunce, B. R. J. [2 ]
Klimek, A. [2 ]
机构
[1] Beijing Jiaotong Univ, Dept Elect Engn, Beijing, Peoples R China
[2] AREVA T&D Automat, Stratford, England
关键词
wavelet transform; polarity comparison; transformer protection;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper presents a new relaying scheme based on the polarity comparison for power transformer protection. Wavelet transform presented in the paper is sued for extracting the transient signal feature of the internal and external fault current waveform, the paper then presents a criterion, which can reliably distinguish between internal faults and inrush currents. All the conclusions are verified by simulation using the EMTDC, the experimental results indicate that this technique is effective under various fault conditions.
引用
收藏
页码:952 / +
页数:2
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