悬挂式避雷器电位分布计算及均压环优化配置  

Electric Field and Potential Distribution Calculation for Suspension- type Surge Arrester and Grading Rings Optimization

作　　者：王世山[1] 何计谋[2] 金强[2] 

机构地区：[1]南京航空航天大学自动化学院,江苏南京210016 [2]西安电瓷研究所,陕西西安710077

出　　处：《电瓷避雷器》2005年第3期24-28,共5页Insulators and Surge Arresters

摘　　要：建立了悬挂式避雷器置于地面时的2D轴对称有限元模型,并对其电场进行了计算,以电阻片电压偏差为目标函数对均压环结构进行了优化设计。将避雷器悬挂于金属塔上处于运行状态时,考虑到金属塔和母线的效应建立了3D有限元模型,计算了电阻片电压偏差分布。与置于地面时的计算相比较,相同结构的避雷器置于地面和悬挂于金属塔上时,其电压偏差分布完全不同。Symmetrical finite element model for suspension-type surge arrester located at ground is proposed to calculate the electric distribution and optimize its grading ring arrangement based on the object of minimizing voltage deviation for varistor.While surge arrester is suspended on metal tower at running state, considering the effect of tower and bus, 3D finite element model is presented.Then, voltage deviations are calculated.Comparing of the results when the MOA of same design being on the ground and suspended, voltage deviations of varistors are very differential.Therefore, calculated results at ground can't be used under the running condition.

关 键 词：悬挂式避雷器 电场计算 有限元 电压偏差 

分 类 号：TM862[电气工程—高电压与绝缘技术]