赵深,孔晓峰,胡泰山,张博.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):. Zhao Shen,Kong Xiaofeng,hutaishan,Zhang Bo.Research on calculation of Induced Voltage and Current on 110kV Crossing Transmission Lines under UHV AC Transmission Lines[J].Electrical Measurement & Instrumentation,2017,54(13):.
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 110kV Crossing Transmission Lines under UHV AC Transmission Lines
The induced electricity of 110kV 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 an 110kV crossing line inside Jinhua in Zhejiang province is performed. The electrostatic induced voltage on the measured line is 12.24kV. 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 very close, indicates that this method can meet the requirements of precision; cross distance or cross angle increases, the induction voltage and current will decrease gradually, the engineering should try to increase the distance or angle, to weaken the line between the inductive effect. 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 point.
