Analysis and prospect of lightning shielding failure evaluation methods of transmission lines

被引：0

作者：

Sima, Wenxia ^{[1
]}

Yang, Qing ^{[1
]}

Li, Yongfu ^{[1
]}

Fan, Shuochao ^{[1
]}

机构：

[1] State Key Laboratory of Power Transmission Equipment and System Safety and New Technology, Chongqing University, Chongqing,400030, China

来源：

Gaodianya Jishu/High Voltage Engineering | 2015年 / 41卷 / 08期

关键词：

Lightning protection - Shielding - Parameter estimation - Uncertainty analysis;

D O I：

10.13336/j.1003-6520.hve.2015.08.004

中图分类号：

学科分类号：

摘要：

With the development of EHV/UHV transmission lines in China, trip-out accidents caused by lightning shielding failures become more frequent, which seriously affect the safe and reliable operation of EHV/UHV transmission and distribution system. Many of the existing evaluation methods cannot meet the current requirements of analyzing the lightning shielding performance in transmission lines, owing to the insufficiency of calculation method, the limit of lightning observation, uncertainties of various key parameters, and criteria and so on. In this paper, the research statuses and progresses of current lightning shielding evaluation methods are expounded and their problems are summarized. Moreover, the opportunities and trends of lightning shielding evaluation methods of transmission lines are analyzed. With the development of long air gap discharge and lightning observation, researches on shielding analysis method in future shall focus on making the methods more thorough and accurate on the basis of the physical microscopic processes of shielding and the measurement of key parameters. This will provide important theory supports for the differentiated lightning protection of transmission lines. ©, 2015, Science Press. All right reserved.

引用

页码：2500 / 2513