李慧奇,郭鑫,刘勇,刘承志,李军,潘卓洪.交流特高压对平行架设线路挂接临时地线上的电磁感应分析[J].电测与仪表,2021,58(5):55-61. LI Huiqi,GUO Xin,LIU Yong,LIU Chengzhi,LI Jun,PAN Zhuohong.Electromagnetic induction analysis of AC high voltage on parallel line erected temporary ground line[J].Electrical Measurement & Instrumentation,2021,58(5):55-61.
交流特高压对平行架设线路挂接临时地线上的电磁感应分析
Electromagnetic induction analysis of AC high voltage on parallel line erected temporary ground line
In the construction of parallel AC UHV live lines, the line induction is very complicated and serious. After the line is lifted, it is mainly grounded through the temporary grounding wire of the tower. If the number of grounding wires is too small during construction, the grounding wire will be blown. Based on the electromagnetic transient analysis software, this paper establishes the model of the double-circuit AC live line on the same tower and the Changji-Guquan ±1 100 kV DC construction line set up in parallel, and calculates the induced voltage and induced current on multiple grounding lines of the construction line. The distribution characteristics of induced voltage and current under different grounding schemes are analyzed, and the factors affecting the induced voltage and current are analyzed. The effectiveness of multiple grounding lines on the construction line was verified by field tests. The research results provide a theoretical basis for parallel UHV AC transmission line safety and construction line grounding scheme.
