基于ATP-EMTP的变电站二次系统雷电过电压仿真

笔者采用ATP暂态仿真软件,对典型变电站各级防雷保护情况建模,计算了传递到变电站二次系统的雷电过电压。提出了在进线段安装保护间隙、变压器高低压侧同时安装避雷器、低压电源系统完善三级防雷的配电系统的各级防雷措施,并对其配合情况进行了仿真。该模型对防雷保护元器件的选取、各级防雷配合提供了计算机辅助依据,对变电站各级防雷保护的绝缘配合具有一定的指导意义。

Simulation of Lightning Overvoltage in Substation Secondary System Based on ATP-EMTP

In this paper,using the ATP transient simulation software,modeling the lightning protection of the typical substation system at all levels,the lightning overvoltage,transfered to the substation of secondary system,is calculated.It is put forward that: install the protective gap at incoming line side,install lightning arrester at transformer high and low voltage side,low voltage power supply system use three levels of lightning protection of the power distribution system the lightning protection at all levels,and simulate the cooperate situation.The computer aided basis is provided by the model for the selection of lightning protection components and the lightning protection each level,and it has certain directive significance for lightning protection insulation coordination.