高电压技术2017，Vol.43Issue(3)：1006-1013,8.DOI:10.13336/j.1003-6520.hve.20170303044
输电线路场强矢量定位方法
Vector Location Method for Field Strength of Power Transmission Lines
摘要
Abstract
To reach more accurate judgement of live working security distance on transmission line,we put forward a method of the field strength vector location.First,we established a calculation model of the electric field around the transmission line.Next,according to the maximum field strength of vector direction and vectors composition at the field measurement dot,and the practical measuring error factors,we searched for the set of possible field strength approach point coordinates.Then,these possible approach points are divided into different point groups according to mathematical clustering method.With the continuous movement feature of the field measurement dot,the center of true approach dot group is determined in order to realize precise tracking and location.Finally,through simulation analysis of two dimensional field strength instance about 220 kV transmission lines.It is showed that the distance error of 82.7％ field measurement dots is less than or equal to 0.1 m,and only 2.75％ greater than or equal to 0.5 m.Basically,the error is further reduced to less than 0.1 m,according to the continuous movement feature of the field measurement dot.In the practical test,95％ test distance error is less than or equal to 0.56 m,and 5％ less than or equal to 1.0 m,basically meeting the requirements of the transmission line for safe distance.The simulation and practical test result shows its effectiveness,and the future research direction is pointed out.关键词
带电作业/场强分布/场强矢量定位/输电线路/模拟电荷法/安全距离Key words
live working/filed strength distribution/field strength vector location/transmission line/charge simulation method/security distance引用本文复制引用
吴登国,李晓明,刘振盛,王丹..输电线路场强矢量定位方法[J].高电压技术,2017,43(3):1006-1013,8.基金项目
中国南方电网公司科技项目(K-GD2011-131).Project supported by Science and Technology Project of China Southern Power Grid Co.,Ltd.(K-GD2011-131). （K-GD2011-131）
