潮流计算：n节点电力系统，写出节点导纳矩阵；写出第一次迭代结束后，各节点电压及其相角值、雅可比矩阵、功率偏差等；写出各节点电压值和相角及各支路损耗（标么值）；将潮流计算结果输入到文件。

-Flow calculation: n nodes power system, write the node admittance matrix　write after the end of the first iteration, each node voltage and phase angle values, Jacobi matrix, power deviation　write each node voltage and phase angle and each branch loss (unit value)　the flow calculation result is input to a file.