有局部电弧污秽绝缘子串仿真模型

Study on simulation model of polluted insulator string with local arc

提出一种基于ATPDraw仿真软件的有局部电弧污秽绝缘子串仿真模型.根据电弧非线性伏安特性曲线形状和试验所得电弧特性数据设置电弧参数,根据绝缘子形状系数和污秽层电导率估算各种型式和不同污秽下污秽层电阻.该仿真模型可以仿真绝缘子串在轻、重污秽下的放电现象,各个绝缘子对地电压变化体现各个绝缘子相互间影响,经过高频采样可以获得电流中暂态行波量.

A simulation model of polluted insulator string with local arc based on ATPDraw is proposed in this paper.The parameter of arc is set based on nonlinear curve shape and the data of arc characteristics.The pollution resistance of different stypes and pollution degrees is estimated based on shape factor and pollution conductivity.The arc phenomenon of light and heavy pollution can be simulated by the model,the interaction of every insulator is reflected by the voltage of every insulator,and the transient travelling-wave can be acquired by high frequency sampling.