宜宾-金华特高压直流输电线路防雷屏蔽失效避雷器防护性能评价

2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE) Pub Date : 2020-09-06 DOI:10.1109/ICHVE49031.2020.9279976

Zhenguo Wang, Te Li, Shaohua Wang, Xiangxian Zhou, Luyao Zhou, L. Ni

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引用次数: 0

摘要

绕行照明已成为影响特高压直流输电线路可靠性的首要因素，避雷器是防雷的重要措施之一。本文以宜宾-金华特高压直流输电线路为例，在雷电仿真的基础上对避雷器的性能进行了评价。对两个典型塔在单回冲程条件下的避雷器防护性能进行了计算和分析。比较了加装避雷器和不加装避雷器时的绕道雷阻水平，得到了塔波阻抗和接地电阻对绕道雷阻的影响。仿真结果表明，安装避雷器后，特高压直流输电线路的抗绕行雷水平明显提高。塔波阻抗对绕行雷阻水平影响不大，可以忽略。随着塔地电阻的增大，避雷器的峰值电流和吸收能量略有下降。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Evaluation of the Protective Performance of the Lightning Arrester for the Lightning Shielding Failure of $\pm 800\mathrm{kV}$ Yibin-Jinhua UHVDC Transmission Line

The detour lighting has become the primary factor affecting the reliability of UHVDC transmission lines, and the surge arrester is one of the most important measures in lightning protection. This paper takes $\pm 800\mathrm{kV}$ Yibin-Jinhua UHVDC transmission line as example evaluating the performance of the surge arrester based on the lightning simulation. The protective performance of the arrester for two typical towers under single return stroke are calculated and analyzed. The detour lightning resistance level with and without the lighting arrester is compared, and the influence of the tower wave impedance and the grounding resistance is obtained. The simulation results show that with the installation of the arrester, the detour lightning resistance level of the UHVDC transmission lines can be significantly improved. The tower wave impedance has little effect on the detour lightning resistance level which can be ignored. With the increase of the tower ground resistance, the arrester shows slight decrease in peak current and absorbed energy.

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2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE)

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