yy_chaoliujisuan

代码说明：

  简单潮流计算：应用牛顿拉夫逊法。可以准确得到各节点电压向量大小，首末端功率，支路功率损耗(Simple flow calculation: The Newton Raphson method. Can get the exact size of the node voltage vector, the first end of the power, slip power loss)