Reserch on Extracting the Features at Relay Protection Based on Wavelet Transform Modulus Maximum

摘要：

In electrical power systems, relay protection is a important protection method. In this paper, According to the theory of detecting abrupt signals with wavelet transformation, we make full use of wavelet transforms modulus maximum technique, the abrupt current signals can be detected quickly when faults occur. At the same time, We also study how to choice a appropriate wavelet for power relay protection. Simulation shows that the proposed method can effectively improve the sensitivity. Also shows the method has a wide range of application for fault diagnosis and extracting signal features.

关键词： Wavelet transform modulus maximum relay protection

作者: Diao Yanhua Wang Shuhai Pang Zhifeng Li Yuping

作者单位: Hebei University of Science and Technology,Shijiazhuang 050004 China

会议类型: 国际会议

会议名称: 第八届国际电子测量与仪器学术会议(Proceedings of 2007 8th International Conference on Electronic Measurement & Instruments)

会议地点: 西安

会议语种:英文

在线出版日期: 2007-08-16（万方平台首次上网日期，不代表论文的发表时间）