摘要
分析了两种广泛应用于变电站(换流站)的直击雷防护设计方法,即折线法和滚球法,认为对易于遭受雷击小电流绕击的超(特)高压换流站而言,基于电气几何模型的滚球法比传统的折线法更加合理有效。开发了基于电气几何模型的直击雷防护设计程序,并结合具体工程项目的设计,对该设计程序的适用性和有效性进行了验证。最后,总结了基于电气几何模型的滚球法的应用特点和设计经验。
This paper investigates two direct lightning stroke shielding methods, the empirical method and the rolling sphere method that are widely applied in substations and converter stations design, resulting in a conclusion that for HV/UHV converter stations which are prone to suffer from direct lightning strokes, it is more effective to adopt rolling-sphere method based on the electro-geometric model than the classical empirical method. Based on the electro-geometric model, a direct lightning stroke shielding design program is developed. In addition, the applicability and validity of this program are verified in practical project. At last, the characteristics of direct lightning stroke shielding method based on electro-geometric model are presented and the design experiences and lessons learned from practical project are summarized.
出处
《南方电网技术》
2009年第5期21-24,共4页
Southern Power System Technology
基金
"十一五"国家科技支撑计划特高压输变电系统开发与示范项目课题资助(2006BAA02A22)~~
关键词
直击雷防护
换流站
电气几何模型
滚球法
direct stroke shielding
convert station
electro-geometric model
rolling sphere method
