Analysis for Calculation Method of Shielding Flashover Rate on Common-Tower Double Transmission Line
Based on the EGM(electric geometry method),some problems when calculating the ratio of exposure arc to exposure arc and shielding arc,exposure arc projection,striking distance coefficient,shielding failure flashover rate etc are analyzed and discussed. It points out that the general maximum striking distance formula is not appropriate for some conditions. Calculating shielding failure flashover rate by current density probability function is proposed; It also suggested that three phase conductors use corresponding striking distance coefficient with the conductor height.
Double circuit transmission line Electric geometry method Shielding failure Shielding failure flashover rate
Meisheng Chang Gailian Yuan
Engineering College of Shanxi University,Taiyuan 030013,China Shanxi Taiyuan Electric Power Supply Company,Taiyuan 030012,China
国际会议
南京
英文
1706-1710
2010-09-13（万方平台首次上网日期，不代表论文的发表时间）