基于 PSCAD4
2 电力系统距离保护的仿真分析摘 要:简要地介绍了 PSCAD4
2 软件及其工具箱,分析了输电线路距离保护的基本原理,并利用软件提供的工具箱搭建了距离保护仿真模型,设置了输电线路可能发生的接地故障和相间故障,最终得出了不同故障类型下输电线路的电压、电流以及其他量的变化规律的波形,从而实现了三段式距离保护的作用
仿真波形结果表明:利用该软件建立的模型是能够准确反应距离保护的作用机理,即距离保护装置能够快速响应故障信号并动作于断路器,实现输电线路的保护
关键词:PSCAD4
2;距离保护;接地故障;仿真Analysis of power system distance protection simulation based on PSCAD4
2Abstract:Briefly introducing PSCAD4
2 software and its toolbox ,then analyzing the basic principle of the transmission line distance protection , and use the toolbox thatthe software provides to build a protection simulation model and seta ground fault and phase transmission line failures the system may occur, at last obtain the voltage, current and waveform variation of other different types of transmission line failures , enabling three— distances protection