中国电力2011，Vol.44Issue(5)：6-9,4.
基于EMD奇异值熵的高压输电线路故障选相新方法
New method for faulty phase identification of HV transmission lines by EMD-based singular value entropy
李晓晨 1陈昌雷 2赵德阳 3李天云4
作者信息
- 1. 湖南省电力公司,中心培训部,湖南,长沙,410131
- 2. 湖南省电力公司超高压管理局,湖南,长沙,410015
- 3. 安徽省电力公司阜阳供电公司,安徽,阜阳,236000
- 4. 东北电力大学,吉林,132012
- 折叠
摘要
Abstract
By the empirical mode decomposition (EMD) analysis results of the transient voltage signals, a new method of faulty phase identification was proposed by combing singular value decomposition and Shannon entropy theory. This method uses EMD-based singular value entropy of transient high frequency components to recognize the faulty phase. With calculation and comparison of the EMD-based singular value entropy of the sampled fault voltage signals, the fault type and the faulty phase can be identified. All possible faults of a typical 500 kV line were simulated in Matlab by using the proposed method. The result shows that the proposed method is free from noises,transitional resistance, fault locations and initial fault angle, and give the correct identifications of various faults quickly.关键词
输电线路/故障选相/经验模态分解(EMD)/奇异值分解(SVD)/信息熵分类
信息技术与安全科学引用本文复制引用
李晓晨,陈昌雷,赵德阳,李天云..基于EMD奇异值熵的高压输电线路故障选相新方法[J].中国电力,2011,44(5):6-9,4.
