特高压多分裂直流耐压试验导线三维电场计算  

Calculation of three dimensional electric field around the ultra-high voltage multi-split conductors for DC voltage withstand test

作　　者：何荣涛[1] 

机构地区：[1]许继集团有限公司,河南许昌461000

出　　处：《电力科学与技术学报》2016年第2期51-56,共6页Journal of Electric Power Science And Technology

摘　　要：为合理配置防风抗晕导线,特高压直流输电设备耐压试验过程中需对特高压多分裂直流耐压试验导线的标称电场进行快速计算。比较马克特-门格尔、有限元法、模拟电荷法对分裂导线表面电场计算的优缺点,建立基于模拟电荷法的分裂导线二维模型和三维模型,比较分析不同模型下导线表面及附近空间的电场分布情况,得到较精确的电场计算结果。结果表明:考虑弧垂、悬挂点不等高、导线有限长等因素,运用三维模型对多分裂直流耐压试验导线的表面及地面附近空间电场强度的计算结果与二维模型的计算结果基本吻合;在实验导线选型时,使用二维模型可得到满足工程需要的结果,但计算耗时要远低于三维模型。In order to configure the wind proof and anti corona conductor,the nominal electric field around the ultra-high voltage multi-split conductors for DC voltage withstand test need to be cal-culated quickly.This paper presented the advantages and disadvantages for surface electric field calculation by comparing Markt ＆ Mengele method ,finite element method ,as well as charge simulation method,and established the two dimensional model and three dimensional model based on charge simulation method.The electric field distributed around conductor surface and nearby space was analyzed and compared under different models,and then the electric field was calculated accurately.Results showed that the calculated results of two dimensional model and three dimensional models on the conductor surface and nearby space potential gradient were basi-cally consistent,considering conductor sag,conductor hanging height different and finite length of conductors as well as other factors.However,when selecting the experimental conductor,it indicates that the calculation based on two dimensional model can yield satisfactory result for planning DC voltage withstand test and its time comsuming is much less than that of three dimen-sional model.

关 键 词：特高压直流耐压试验 多分裂导线 模拟电荷法 标称电场 

分 类 号：TM83[电气工程—高电压与绝缘技术]