摘要
输电线路本体雷击特征规律是差异化防雷性能评估的重要因素之一,对其进行科学合理的研究,可提高雷害治理方案的有效性。以四川电网500 k V东锦线2013年至2014年雷击暂态监测系统和雷电定位系统监测数据为基础,建立雷击数据统计方法,对雷击特征规律与杆塔高度、雷电空间分布相关性和绕、反击分布规律进行统计研究。结果表明,杆塔高度与雷击次数存在正相关性,相对高度越高的杆塔越易遭受雷击,杆塔沿途地形为平原区域的绕击率和反击率均高于山区。
Lightning striking feature of transmission line is one of the most important evaluation factors of differentiated lightning protection. Reasonable research can improve the effectiveness of lightning protection. On the basis of the lightning data of Dongjin transmission line detected by lightning location system, a statistical method is built up. The correlativity of the lightning stroke feature and law to the tower height, and the space charge distribution, and the shielding failure and back flashover distribution law are studied statistically. The resuhs indicate that the lightning number increases with tower＇s height. It also shows that the frequency of lightning stroke in mountain terrain is higher than that in plain.
出处
《电瓷避雷器》
CAS
北大核心
2016年第2期117-122,共6页
Insulators and Surge Arresters
基金
国家电网公司2013年科技项目<输电线路雷击暂态监测及故障信息数据库研究>
关键词
本体雷击特征
雷击数据
反击率
绕击率
lightning striking feature
lightning data
back flashover rate
shielding failure rate
