短路电流计算程序的开发与仿真

Development and Simulation of Short Circuit Current Calculation Program

电气设备和载流导体的选择、继电保护、自动装置的整定、限制短路电流措施的确定都需进行短路电流的计算。电力系统短路电流有单相短路、两相短路、两相接地短路和三相短路之分,文章对同一点发生各种类型短路故障的短路电流进行了仿真与分析研究,在传统的基础上进行编程计算,并用MATLAB进行仿真验证。

The short circuit current calculation is required for choosing equipmen t and current carrying conductor,setting of the rely and automation,confirmation of the short circuit current limiting method. Short circuit in power system can be classsified into single phase short circuit,two phase short circuit,two phas e short circuit to the earth and three phase short circuit. Analysis on the shor t circuit current when each kind of short circuit occurred at the same point was conducted. A program was developed to compute short circuit current, which was simulated and verif with mathlab.