Research on Electromagnetic Radiation Model of Corona Discharge with UHV AC Transmission Lines

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Li, Chaoqun^1 ; Xu, Song^2 ; Xia, Zhuqing^1 ; Yang, Xin^1 ; Wu, Xixiu^1

Automation School, Wuhan University of Technology, Wuhan, China^1

China Energy Engineering Group Guangxi Electric Power Design Institute Co., Ltd., Nanning, China^2

关键词: Corona discharges;    Double exponential distribution;    Electric dipole;    Field strengths;    Measured results;    Radiation characteristics;    UHV AC transmission;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012120/pdf
DOI  :  10.1088/1757-899X/486/1/012120

来源: IOP

【 摘 要 】

The corona discharge pulse current has double exponential distribution characteristics. On this basis, the electromagnetic radiation model of corona discharge is established by using the theory of electric dipole. The corona discharge characteristics are analysed and compared with the measured results of 1000kV UHV ac transmission line. The results show that the electromagnetic field strength increases first and then decreases with time, and at the same time, the electromagnetic field strength decreases exponentially with distance. The simulated and predicted corona discharge radiation characteristics have the same variation law as the measured data, which verifies the correctness of the model.