架空线路分裂导线表面电位梯度的数值计算  

Numerical Calculation of Electric Field Intensity on the Surface of Bundle Conductors of Overhead Transmission Lines

作　　者：张宇[1] 郑伟[2] 文武[1] 阮江军[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]中南电力设计院,武汉430072

出　　处：《高电压技术》2005年第1期23-24,37,共3页High Voltage Engineering

摘　　要：用有限元法计算架空输电线路的电场可准确求得其导体表面的电位梯度。该法适于各类塔型和导线布置,克服了目前手册方法的不足。通过计算发现:分裂导体表面电位梯度随导体半径的增大而增大,随分裂间距的 增大而略有增大,随相间距离的增大而减小,当导线高度增加时,B、C相导体表面电位梯度减小而A相增大。The electric field intensity on surface of conductors can be calculated accurately by applying FEM numerical method to the bundle conductors of overhead lines. This method is suitable for all kinds of towers and all arrangements of bundle conductors. It is found from the results of calculation that, the electric field intensity on surface of bundle conductors becomes higher, if the radius of conductors increase; it is increased moderately if bundle spacing is widened; it is decreased if distance between phases increase; when the height of conductors increase, the surface electric field intensity on B and C phases decreases but increases on A phase.

关 键 词：架空线路 有限元 电位梯度 

分 类 号：TM751[电气工程—电力系统及自动化]