A Strategy of Suppressing the Underground Impact Scattered Current in Power Grid by Using Insulation Baffle

2017 2nd Asia Conference on Power and Electrical Engineering

能源学;电工学

Zhan, Qinghua^1 ; Chen, Zhucheng^1 ; Li, Hongtao^1 ; Liu, Yijun^1 ; Mei, Cheng^2 ; He, Zhijie^2

Guangdong Power Grid Limited Liability Company, Foshan Power Supply Bureau, Foshan

528000, China^1

School of Electric Engineering, Southwest Jiaotong University, Chengdu

610031, China^2

关键词: Comsol mutiphysics simulations;    Electromagnetic environments;    Grounding arrangements;    Guangdong Province;    High voltage transmission lines;    Power transmission tower;    Protection measures;    Transmission tower;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/199/1/012107/pdf
DOI  :  10.1088/1757-899X/199/1/012107

来源: IOP

【 摘 要 】

In order to solve the accidents happened in the ponds or other special places around the tower which were caused by the diffusion current after lightning stroke the transmission tower, the protection measures for the problem tower in the area of Guangdong Province which occurred dead fish in the pond in thunderstorm weather were studied in this paper. The COMSOL mutiphysics simulation software was used in order to calculate the electromagnetic environment of the diffusion situation by grounding device after lightning stroke the power transmission tower. Study concluded that the safe distance between the fish pond and grounding device of transmission tower is 14 meter. The effects of the length and depth or stayed a gap of the insulation baffle on the fish in the fish pond were discussed. The protection method of the insulation baffle has important practical significance to the protection of the grounding device for diffusion current, and can provide some engineering guidance and basis for the grounding arrangement and transformation of the high voltage transmission line tower.