南方电网技术2016，Vol.10Issue(9)：1-10,29,11.DOI:10.13648/j.cnki.issn1674-0629.2016.09.001
南方电网超／特高压输电线路防雷性能评估技术研究进展
Review on Lightning Performance Estimation of EHV and UHV Overhead Transmission Lines in China Southern Power Grid
何俊佳 1蔡汉生 2贺恒鑫 1贾磊 2刘刚 2赵贤根 1杨瑞 1陈杉杉 1厉天威2
作者信息
- 1. 强电磁工程与应用国家重点实验室 华中科技大学，武汉430074
- 2. 直流输电技术国家重点实验室 南方电网科学研究院，广州510663
- 折叠
摘要
Abstract
Lightning activity is frequent in the main grid from west to east of China Southern Power Grid,where the terrain and ad-verse weather conditions are bad,differentiated distribution of lightning fault is significant,and it’s a big challenge to carry out effec-tive protection. Research progress of lightning performance evaluation technology of EHV and UHV overhead transmission lines of China Southern Power Grid in recent years are introduced in this paper. Firstly,lightning activities within China Southern Power Grid area and operation against lightning of EHV and UHV overhead transmission lines are researched and summaried,and the causes of lightning trip are analyzed. A numerical simulation model aimed at calculating the distribution of corona space charge of UHVDC transmission lines under lightning conditions are proposed,the initial condition of positive upward leader produced by large-sized bun-dled conductors are obtained through experiments. A numerical model aimed at calculating the lightning surge response of complex conductor system are proposed based on FDTD,and the accuracy of the model is verified through actual measurement on model line transient response. Lightning protection analyzing system for transmission line(LPTL)is developed. By using LPTL,comparisons be-tween lightning performance evaluation results and operating experience of typical transmission lines are carried out,so that the engi-neering applicability of the software is verified. In the future,further works should be done to develop the basic research on mechanism of lightning shielding failure of DC lines,correct and improve LPTL,in order to provide effective means for lightning protection de-sign and improvement of transmission lines.关键词
超/特高压线路/雷击跳闸/运行经验/电晕空间电荷/雷电上行先导/时域有限差分/雷电冲击响应/防雷性能Key words
EHV and UHV overhead transmission lines/lightning trip/operating experience/corona space charge/lightning upward leader/FDTD/lightning surge response/lightning performance分类
信息技术与安全科学引用本文复制引用
何俊佳,蔡汉生,贺恒鑫,贾磊,刘刚,赵贤根,杨瑞,陈杉杉,厉天威..南方电网超／特高压输电线路防雷性能评估技术研究进展[J].南方电网技术,2016,10(9):1-10,29,11.
