Electromagnetic Transient Analysis of 750kV Four-circuit Transmission Line on the Same Tower

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Lou, Ying^1 ; Zha, Zhipeng^1 ; He, Huiwen^1 ; Li, Zhenqiang^1

China Electric Power Research Institute, Wuhan, China^1

关键词: Electromagnetic transient analysis;    Induced voltages;    Neutral grounding;    Power frequency;    Power frequency overvoltage;    Recovery voltage;    Secondary arc current;    Switching overvoltages;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012088/pdf
DOI  :  10.1088/1757-899X/486/1/012088

来源: IOP

【 摘 要 】

The ATP-EMTP program is used to calculate the power frequency overvoltage, open-phase power frequency resonant overvoltage, induced voltage and current, secondary arc current and recovery voltage, and switching overvoltage of 750kV four-circuit transmission line on the same tower. The study reveals that the configuration of four circuits on the same tower has little influence on the power frequency and switching overvoltage, but greatly influences the secondary arc current and recovery voltage, and induced voltage and current. Therefore, measures like installing high-voltage shunt reactor and neutral grounding reactor and line transposition are required. Also, the induced voltage and current ratings of earthing switch are proposed.