潮流计算是根据给定的电网结构、参数和发电机、负荷等元件的运行条件，确定电力系统各部分稳态运行状态参数的计算。程序为12节点电网的潮流计算。-Power flow calculation is based on the given grid structure, parameters and elements such as generator, load operating condition, to determine the power system steady operation sta