一个典型的直角坐标牛顿拉夫逊法程序，用于电力系统的潮流计算，程序可计算带PQ节点、PV节点、平行支路、接地支路、非标准变比变压器支路的电力系统潮流，通用性良好。-A typical Cartesian coordinate procedures Newton Raphson method for power system load flow calculation, the program calculates the node with the PQ, PV nodes, the parallel branch, ground slip, non-standard ratio transformer branch of power flow, GM was good.