• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2014, Vol. 35 ›› Issue (11): 85-91.doi: 10.3969/j.issn.1000-7229.2014.11.014

• 输配电技术 • 上一篇    下一篇

不同电压等级架空输电线路雷电防护特征分析

陈维江1,谢施君2,刘楠1,贺恒鑫3,边凯4,沈海滨3   

  1. 1.国家电网公司,北京市 100031;2.华中科技大学电气与电子工程学院,武汉市 430074;3.中国电力科学研究院,北京市 100192;4.国网北京市电力公司,北京市 100031
  • 出版日期:2014-11-01
  • 作者简介:陈维江(1958),男,教授级高工,博士生导师,主要从事电力系统防雷、过电压与绝缘配合、电磁环境和特高压建设等方面的研究工作; 谢施君(1984),男,博士,主要从事电力系统防雷、过电压与绝缘配合等方面的研究工作; 刘楠(1984),男,硕士,主要从事特高压系统分析、工程建设管理方面的研究工作; 贺恒鑫(1982),男,博士,主要从事电力系统防雷、过电压与绝缘配合、长空气间隙放电等方面的研究工作; 边凯(1983),男,博士,主要从事配电网和电气化铁路牵引供电系统防雷等方面的研究工作; 沈海滨(1976),男,硕士,主要从事电力系统防雷、过电压绝缘配合等方面的研究工作。

Lightning Protection Characteristics of Overhead Transmission Lines with Different Voltage Grades

CHEN Weijiang1, XIE Shijun2, LIU Nan1, HE Hengxin3, BIAN Kai4, SHEN Haibin3   

  1. 1. State Grid Corporation of China, Beijing 100031, China;2. College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei Province, China;3. China Electric Power Research Institution, Beijing 100192, China; 4. State Grid Beijing Electric Power Company, Beijing 100031, China
  • Online:2014-11-01

摘要:

对不同电压等级架空输电线路的雷电防护特征进行比较分析,可为提出输电线路的雷电防护策略提供参考。以我国110 kV至 1 000 kV交流输电线路以及±500 kV至±800 kV直流输电线路为分析对象,对其绕击特征和反击特征进行了分析,并提出了不同电压等级输电线路雷电防护重点。110 kV和220 kV交流输电线路应重点关注反击问题;500 kV和750 kV交流输电线路应重点关注在高接地电阻地区的反击问题和山区的绕击问题;1 000 kV交流输电线路的反击闪络率极低,可考虑采用杆塔自然接地以降低建设成本,同时需关注山区的边相导线绕击问题;±500 kV、±660 kV和±800 kV直流输电线路应主要关注在山区的绕击闪络问题。

关键词: 架空输电线路, 电压等级, 雷电防护, 反击, 绕击, 接地电阻, 保护角, 地形

Abstract:

Contrastive analysis on lightning protection characteristics of overhead transmission line can be the reference for the lightning protection strategy of transmission line. Taking 110 kV to 1 000 kV AC transmission lines and ±500 kV to ±800 kV DC transmission lines in China as analysis object, the characteristics of back striking and shielding failure were analyzed, and the lightning protection keys for overhead transmission lines with different voltage grades were proposed. For the 110 kV and 220 kV AC transmission lines, back striking should be focused on. For the 500 kV and 750 kV AC transmission lines, back striking should be focused on in the area with high grounding resistance and shielding failure should be noticed in mountain area. For the 1 000 kV AC transmission lines, due to the low flashover rate of back striking, the construction cost could be reduced by applying the natural grounding body of the tower, and it also should focus on the shielding failure of side conductors in mountain area. For ±500 kV, ±660 kV and ±800 kV DC transmission lines, the shielding failure flashover in mountain area should be focused on.

Key words: overhead transmission line, voltage grade, lightning protection, back striking, shielding failure, grounding resistance, protection angle, terrain