Analysis of Electromagnetic Environment and Influencing Factors of Yihua DC Transmission Lines

2018 3rd International Conference on Insulating Materials, Material Application and Electrical Engineering

材料科学;无线电电子学;电工学

Liu, Yong^1 ; Sun, Minggang^2 ; Guo, Xin^3 ; Yang, Zhonglv^2 ; Liu, Chengzhi^1 ; Ren, Hongxin^3 ; Li, Huiqi^3

State Grid Anhui Electric Power Co., Ltd., Hefei, China^1

State Grid Anhui Electric Power Co., Ltd, Construction Company, Hefei, China^2

Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding, China^3

关键词: Actual measurements;    Charge simulation methods;    DC transmission lines;    Design and construction;    Electromagnetic environments;    HVDC transmission lines;    Roughness coefficient;    Total electric fields;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/452/3/032112/pdf
DOI  :  10.1088/1757-899X/452/3/032112

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The electromagnetic environment of transmission lines is one of the major constraints to the design and construction of HVDC transmission lines. In this paper, the charge simulation method and the analytic method based on the Deutsch hypothesis are used to calculate the total electric field strength and ion current density of the 500 kV Yihua DC transmission lines, and the correctness of the calculation is verified by the actual measurement results. Then the EPRI formula and CISPR formula are applied to analyse the audible noise and radio interference of HVDC transmission lines. At last, the influence of factors such as the pole spacing of HVDC lines, the conductor height to the ground, the splitting spacing and the roughness coefficient on the electromagnetic environment of HVDC transmission lines are analysed. Among them, the height of conductor has effective impact on the total electric field strength, while the control of polar spacing is limited. The height of the conductor and the distance between the poles affect the level of audible noise and radio interference mostly, but the control effect of the two is opposite.