是一个matlab中的power system 中搭建的一个模型。可以仿真35KV电力系统线路发单项短路故障、两项短路故障、和三项短路故障的短路电流电压波形。-This is a model of building a matlab power in system. Simulation of 35kV Power line system billing short-circuit fault, two short circuit fault, and three short circuit f