基于线-面模型的边界元法计算特高压交流变电站设备附近工频电场  

Calculation of Power Frequency Electric Field Near Equipments in UHV Substations With BEM Based on Line-Area Models

作　　者：刘士利[1] 王泽忠[1] 孙静[1] 

机构地区：[1]华北电力大学高电压与电磁兼容北京市重点实验室,北京102206

出　　处：《电工技术学报》2011年第3期162-167,共6页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金(50707008);国际科技合作计划(2007DFA71250)资助项目

摘　　要：针对特高压变电站设备附近工频电场的复杂性,提出了模拟导线、均压环等线状结构的计算模型,推导了形成系数矩阵时线单元奇异积分公式。将线计算模型引入边界元法,与传统的面模型相结合共同模拟变电站各种复杂设备,并采用线、面单元对模型进行剖分,提高了计算效率。计算了荆门1000kV特高压变电站高压并联电抗器附近的工频电场分布,通过和测量数据对比,验证了模型和算法的正确性。It is difficult to calculate 3-D power frequency electric field around equipments in ultra-high voltage（UHV） substations due to the complex structures.In order to improve the calculation efficiency,a new computational model called line-model which can apply to line structures such as bus and grading ring was proposed.The singular integral formula for line element was deduced and the line-model was introduced into boundary element method（BEM） to deal with complex electrical equipments.As a result,the computational accuracy and speed enhance dramatically.The electric field around reactors in Jingmen UHV substation is calculated and the availability of the method is demonstrated by comparing the simulated and the measured results.

关 键 词：线-面模型 边界元 工频电场 特高压变电站 设备 

分 类 号：TM853[电气工程—高电压与绝缘技术]