摘要
500 kV线路雷击事故是引起线路跳闸的主要原因,对于复杂地形下的线路尤其如此。本文采用ATP-EMTP和电气几何模型对典型500 kV线路受地形因素影响下的绕击耐雷水平进行了分析,对线路避雷器在防雷中的工作原理进行了解释,对500 kV普洪一线的雷害治理情况进行了说明。研究表明,在线路防雷过程中,应该更加重视地形地貌的影响,对于复杂地形多雷区线路使用线路避雷器进行雷害治理是有效手段。
Lightning fault of 500 kV transmission line is the main cause of the line trip out, especially for transmission lines located in complex terrain. The ATP-EMTP and electric geometry method are used to analyze the shielding failure lightning withstand level of the typical 500 kV lines which are influenced by terrain factors, the working principle of line arrester in lightning protection is explained. Lightning disturbance governance of the first 500 kV Puhong line is introduced. Studies show that more attention should be paid the influence of topography on lightning protection of transmission line; the line arrester is one of the effective means for lightning disturbance treatment of 500 kV transmission line in complex terrain.
出处
《电瓷避雷器》
CAS
北大核心
2013年第3期123-127,共5页
Insulators and Surge Arresters
关键词
线路避雷器
ATP—EMTP
电气几何模型
耐雷水平
绕击
line arrester, ATP-EMTP
electric geometry method
lightning withstand level
shieldingfailure
