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| 基于EMD奇异值熵的高压输电线路故障选相新方法 | |
| 引用本文： | 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 |
| 作者姓名： | 李晓晨 陈昌雷 赵德阳 李天云 |
| 作者单位： | 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 |
| 摘 要： | 在对暂态电压信号进行经验模态分解(EMD)基础上,结合奇异值分解(SVD)及信息熵理论提出了利用高频暂态分量的奇异值熵实现故障选相。此方法对采集到的故障后电压信号求取EMD奇异值熵,并比较三相间熵值的大小来识别故障类型和判别故障相。基于Matlab环境,对一典型500 kV线路进行故障类型选相的仿真,结果表明该方法不受过渡电阻、故障位置、故障初始角和噪声强度等因素影响,能够快速准确识别各类故障。 |
| 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 |
New method for faulty phase identification of HV transmission lines by EMD-based singular value entropy |
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| LI Xiao-chen,CHEN Chang-lei,ZHAO De-yang,LI Tian-yun. New method for faulty phase identification of HV transmission lines by EMD-based singular value entropy[J]. Electric Power, 2011, 44(5): 6-9 | |
| Authors: | LI Xiao-chen CHEN Chang-lei ZHAO De-yang LI Tian-yun |
| Affiliation: | LI Xiao-chen1,CHEN Chang-lei2,ZHAO De-yang3,LI Tian-yun4(1.Center Training Department,Hunan Electric Corporation,Changsha410131,China,2.EHV Administration of Hunan Electric Power Corporation,Changsha 410015,3.Fuyang Power Supply Company,Anhui Electric Corporation,Fuyang 236000,4.Northeast Dianli University,Jilin 132012,China) |
| 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 fau... |
| Keywords: | transmission line faulty phase identification empirical mode decomposition singular value decomposition shannon entropy |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |