摘要
本文利用有限元方法计算了输电线路沿线的电场,同时利用分界面自由度耦合的非连续网格法进行网格剖分,提高了计算效率。经500kV交流输电线路模型计算分析得出,在距离地面1.5m处电场强度未超过国家标准限值。论证了分界面自由度耦合的非连续网格有限元法适用于"大尺寸区域小尺寸元件"模型的网格剖分,适用于输电线路电场的计算。
In this paper,the electric field is calculated by the finite element method.By calculation and analysis of the500kV AC transmission lines model,this paper draws a conclusion that the electric field intensity is less than the national standard limit at1.5m above the ground.In the calculation,the mesh generation with the freedom coupling method on interfaces is adopted to model the thin transmission lines and the large surrounding air region,and is appropriate for calculating electric field of transmission lines.This method is able to reduce the demand of element numbers and increase the calculation accuracy heavily.
作者
林育艺
林燕鸿
Lin Yuyi;Lin Yanhong(Shenzhen Power Supply Bureau Co., Ltd, Shenzhen, Guangdong 518010;State Grid Longyan Power Supply Company, Longyan, Fujian 364000)
出处
《电气技术》
2017年第4期71-74,共4页
Electrical Engineering
关键词
输电线路
电场
有限元法
非连续网格
transmission lines
electric field
finite element method
discontinuous mesh
