本程序的功能：在直角坐标系中，运用牛顿---拉夫逊法求解一般的潮流问题，

形成节点导纳矩阵、雅克比矩阵来建立修正方程，求解偏移量和电压新值，

进而求解电流、相角和输入功率、输出功率以及线路功率及其损耗问题。-This program features: In the Cartesian coordinate system, using Newton--- Raphson method for solving general trend of the problem, the formation of nodal admittance matrix, Jacobian matrix to create a correction equation, solving voltage offset and new values, thereby solving current, phase angle and the input power, output power and line power and loss issues.