交流输电线路雷击跳闸率计算方法研究  

Study on Calculation Method of Lightning Trip-out Rate of AC Overhead Transmission Lines

作　　者：殷勤[1] 郭洁[1] 陈洁[1] 王森[2] 王莉英[2] 

机构地区：[1]西安交通大学电气工程学院,西安710049 [2]陕西电力科学研究院,西安710048

出　　处：《电瓷避雷器》2012年第3期71-76,共6页Insulators and Surge Arresters

摘　　要：目前对交流架空输电线路雷击跳闸率的计算有多种方法,由于模型不同、初始参数选取不同,计算结果出现较大差异。针对这一问题,以陕西110 kV、330 kV、750 kV高压输电工程中110 kV三角排列、330 kV三角排列、330 kV与750 kV同杆双回架空输电线路为例,分别采用DL/T620—1997"交流电气装置的过电压保护和绝缘配合"推荐的计算方法、EMTP仿真计算法与电气几何模型计算方法对架空输电线路雷电反击和绕击跳闸率进行了计算。同时结合多年实际观测的雷击跳闸数据对计算结果进行了对比分析,为选择合适的计算方法提供参考。There are many ways to calculate lightning trip-out rate of A.C. overhead transmission lines, because the difference of the model and the initial parameter, the results are quite different. For this problem, taking 110 kV,330 kV triangular arrangement overhead transmission lines and 330 kV, 750 kV overhead transmission with double-circle line in Shannxi 110 kV, 330 kV ,750 kV high voltage transmission projects as examples, lightning trip-out rate of overhead transmission lines are calculated by method of electrical geometric model （EGM）, method of EMTP simulation,method of Dirt620- 1997 m. Comparative analysis of the calculation results are carried out combining with years of observation data of lightning trip-out rate, reference is provided for choosing appropriate calculation method.

关 键 词：反击 绕击 雷击跳闸率 

分 类 号：TM863[电气工程—高电压与绝缘技术]