电力系统及其自动化学报2017，Vol.29Issue(2)：14-20,7.DOI:10.3969/j.issn.1003-8930.2017.02.003
配电网单相接地故障行波定位新方法
New Method of Single Phase-to-ground Fault Location Based on Traveling Wave in Distribution Networks
摘要
Abstract
Considering that it is difficult to determine the zero-mode wave velocity using time difference and velocity dif-ference between zero-mode and line-mode traveling waves adopted in the traveling wave location principle,an online re-al-time zero-mode wave velocity algorithm is proposed using information fusion at the two ends,and a single phase-to-ground fault traveling wave location method is put forward in distribution networks. The propagation characteristics of traveling-wave components on the line are analyzed,and it is found that the arrival time of inceptive traveling wave has better sensitivity and stability when the traveling wave frequencies of zero-mode and line-mode are 50 kHz and 500 kHz,respectively,after S-transform. The correlation of zero-mode wave velocity and location formula is deduced,and the minimum area including fault locations is found,where line sectioning is decomposed into T type to conduct fault lo-cation. The simulation in PSCAD/EMTDC shows that the zero-mode wave velocity and location method are accurate, and the result has engineering significance.关键词
S变换/行波/零模波速度/故障定位/配电网Key words
S-transform/traveling wave/zero-mode wave velocity/fault location/distribution networks分类
信息技术与安全科学引用本文复制引用
洪亚,谭阳红,易汗林,文娟,姜书燕..配电网单相接地故障行波定位新方法[J].电力系统及其自动化学报,2017,29(2):14-20,7.基金项目
国家重点基础研究发展计划(973计划)资助项目(2012CB215106) （973计划）
国家自然科学基金资助项目(61102039) （61102039）
教育部新世纪优秀人才支持计划资助项目(NCET-11-0130) （NCET-11-0130）
高校博士学科点专项科研基金资助项目(20120161110009) （20120161110009）
湖南省自然科学基金资助项目(14JJ7029) （14JJ7029）
中央高校基金和湖南省教改课题资助项目 （）
