基于时间序列压缩动态时间弯曲距离故障区段定位

许冲冲; 罗勋华; 郭上华; 辛 锋; 王志勇; 杨志祥

许冲冲,罗勋华,郭上华,辛锋,王志勇,杨志祥.基于时间序列压缩动态时间弯曲距离故障区段定位[J].电测与仪表,2019,56(10):127-133.
XU Chongchong,LUO Xunhua,GUO Shanghua,XIN Feng,WANG Zhiyong,YANG Zhixiang.A%20Fault%20Section%20Location%20Method%20Based%20on%20Dynamic%20Time%20Warping%20Distance%20with%20Compress%20Time%20Sequence[J].Electrical Measurement & Instrumentation,2019,56(10):127-133.

基于时间序列压缩动态时间弯曲距离故障区段定位

A%20Fault%20Section%20Location%20Method%20Based%20on%20Dynamic%20Time%20Warping%20Distance%20with%20Compress%20Time%20Sequence

DOI：10.19753/j.issn1001-1390.2019.010.021

中文关键词: 配电网故障区段定位数据压缩动态时间弯曲距离

英文关键词:distribution%20network %20fault%20section%20location %20data%20compression %20dynamic%20time%20warping%20distance

基金项目:

作者中文名	作者英文名	单位
许冲冲	XU Chongchong	国网北京市电力公司
罗勋华	LUO Xunhua	珠海许继电气有限公司
郭上华	GUO Shanghua	珠海许继电气有限公司
辛锋	XIN Feng	国网北京市电力公司
王志勇	WANG Zhiyong	国网北京市电力公司
杨志祥	YANG Zhixiang	珠海许继电气有限公司

摘要点击次数: 2002

中文摘要:

针对基于暂态零模电流相关系数法的配电网故障区段定位方法存在数据处理量大且需要时间同步问题,本文提出一种基于时间序列压缩的动态时间弯曲距离(DTW)的小电流接地故障区段定位方法。先对终端控制单元(FTU)采集的故障录波数据预先处理,只提取故障发生后一个工频周波内的初始值、极值以及两极值点之间数据变化差值最大的两点,再将新的时间序列上传至主站,最后由主站采用动态时间弯曲距离算法求取两相邻FTU零模电流的相似性来进行故障区段定位。通过算法对比分析可得,在抗同步误差能力和信号幅值反应能力上,DTW算法较强于相关系数法；在直流分量表达能力上,两算法效果基本一致。此外,数据压缩后的新时间序列在DTW距离上的相似度表达能力基本与原时间序列相同,但数据处理量减少了至少一半以上。大量ATP/EMTP仿真证明本文所提方法能在不同故障角、接地电阻、故障位置下都能准确判出故障区段。

英文摘要:

Since%20the%20method%20of%20transient%200%20mode%20current%20correlation%20coefficient%20in%20distribution%20network%20fault%20section%20locating%20exists%20the%20problem%20with%20large%20amount%20data%20processing%20and%20need%20time%20synchronization,%20this%20paper%20presents%20a%20dynamic%20time%20warping%20(DTW)%20distance%20method%20based%20on%20time%20series%20compression%20for%20fault%20section%20locating.%20The%20proposed%20method%20only%20extract%20data%20within%20a%20power%20frequency%20cycle%20after%20fault%20occurs%20which%20include%20the%20initial%20value,%20extreme%20value%20and%20two%20points%20of%20maximum%20difference%20change%20between%20two%20extreme%20points.%20Then%20a%20new%20time%20sequence%20is%20uploaded to the%20host,%20and%20finally%20by%20the%20main%20dynamic%20time%20warping%20distance%20algorithm%20calculating%20the%20similarity%20of%20two%20adjacent%20FTU.%20Through%20the%20comparison%20of%20the%20algorithm,%20the%20DTW%20algorithm%20is%20better%20than%20the%20correlation%20coefficient%20method%20in%20the%20ability%20of%20anti-synchronization%20error%20and%20signal%20amplitude.%20In%20addition,%20the%20similarity%20calculation%20of%20the%20new%20time%20series%20on%20DTW%20distance%20is%20the%20same%20as%20the%20original%20time%20series,%20but%20the%20data%20processing%20capacity%20is%20reduced%20by%20more%20than%20half.%20A%20large%20amount%20of%20ATP/EMTP%20simulation%20shows%20that%20the%20proposed%20method%20can%20accurately%20find%20fault%20segments%20in%20different%20fault%20angles,%20grounding%20resistance%20and%20fault%20location.

查看全文查看/发表评论下载PDF阅读器

关闭