电容器组负荷开关电场与气流场仿真分析

摘要

Based on the theory of electric field numerical analysis,the electric field in load switch for capacitor banks switching was described by the two-dimensional axisymmetric field and Laplace equation. The electric field in load switch was simulated and the changes of electric field intensity value along with opening travel increasing were acquired. Through simulating the electric field during the period of switch closing ,the pre-strike characteristic was calculated. At the same time,the flow field in load switch was calculated using two-dimensional N-S equations which were compressible and viscous. The distribution of flow field in load switch during switching on and off processing was acquired.%基于电场数值分析理论，采用二维轴对称电场和拉普拉斯方程描述电容器组负荷开关灭弧室内电场，仿真分析分合闸过程中负荷开关的电场分布，计算电场强度随开距的变化情况；仿真分析合闸过程中的预击穿特性；同时，使用有粘气流场的二维可压缩的N-S方程组描述开关内部气流场，计算分闸情况下负荷开关内部的气流场分布情况，并通过耦合计算得到负荷开关不同条件下的介质恢复强度曲线。