Transient Disturbance Detection Based on Hilbert Phase-shifting and Wavelet De-noising

摘要：

The transient power quality detection and location is a quite important topic of the analysis of power quality. This detection method that based on wavelet transform is very popular. However, the results of wavelet detection are affected seriously by the system noise. In this paper, a new method based on Hilbert phase- shifting and wavelet de-noising is an advisable way. First, the signal with noise is processed by the Hilbert shifting transform, getting the signal envelope including noise. The envelope shows the change trend of disturbance signal. Then, removing the noise from the transient signal envelope by wavelet de-noising, the beginning and ending times are extracted exactly form the denoised signal. The method not only can detect and locate the disturbance signals accurately, but also unaffected by the system noise.

关键词： Power quality (PQ) Hilbert phase-shifting wavelet de-noising disturbance detection.

作者: Chunling Chen Weiwei Liang Tongyu Xu

作者单位: School of Information and Electric Engineering,Shenyang Agricultural University 110161,Shenyang,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 3353-3358

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）