电力电缆电容锥式终端电场的有限元分析

本文论述了高压电缆电容锥式终端具有强制电场沿轴向均匀分布的特点。在电缆附件结构优化设计中 ,用有限元方法计算了 110 k V、36层悬浮电极的电容锥式电缆终端的电场分布 ,并与增绕式电缆终端比较 ,最大轴向场强下降了 2 4 .8% ,电场轴向分布得到很大的改善。文中还介绍了计算采用的瞬态非线性软件包具有可视化交互式的前后处理功能。

FEM analysis of the electric field in the condenser cone termination of power cables

This paper indicates that the condenser cone termination of HV cables has the capacity to force the stress to distribute evenly along the longitudinal axis. In the optimized design of cable accessories, the stress distribution of a 110 kV condenser cone termination of power cable with 36-layered suspended electrodes was calculated using the FEM method. The result was compared with that of the reinforced wrapped termination. It is found that the longitudinal stress may be decreased by 24.8% maximum and the longitudinal distribution of the stress may be greatly improved by using the condenser cone termination. This paper also indicates that the transient nonlinear FE software package used in the calculation has visual and mutual pre/post processing functions.