电测与仪表2017，Vol.54Issue(13)：30-35,6.
特高压交流输电线路下方交跨线路感应电计算方法研究
Research on calculation of induced voltage and current on 110 kV crossing transmission lines under UHV AC transmission lines
赵深 1孔晓峰 1胡泰山 2张博 2余光凯2
作者信息
- 1. 国网浙江省电力公司金华供电公司,浙江 金华 321000
- 2. 武汉大学 电气工程学院,武汉 430072
- 折叠
摘要
Abstract
The induced electricity of 110 kV transmission lines which cross the UHV AC transmission lines may threaten personal safety of the maintenance staff.In this paper, field measurement of the induced voltage and induced current on a 110 kV crossing line inside Jinhua in Zhejiang province is performed.The electrostatic induced voltage on the measured line is 12.34 kV.We put forward the method of induction line segments, using MATLAB program to calculate each section of induction voltage and finally the overlay get line induced voltage.The calculation results show that the calculated results and the measured results are very close, which indicate that this method can meet the requirements of precision, when the cross distance or cross angle increases, the induction voltage and current will decrease gradually, and we should try to increase the distance or angle in the practical engineering, to weaken the inductive effect between lines.In order to ensure the safety of the people, grounding knife switches in both sides of the substation should be grounded during line maintenance, and temporary ground wire should be connected to both sides of the working points.关键词
特高压交流线路/交叉跨越/线路检修/感应电压/感应电流Key words
UHV AC transmission lines/crossing/line maintenance/induced voltage/induced current分类
信息技术与安全科学引用本文复制引用
赵深,孔晓峰,胡泰山,张博,余光凯..特高压交流输电线路下方交跨线路感应电计算方法研究[J].电测与仪表,2017,54(13):30-35,6.
