潮流计算源程序。

既可以用于高压输电网的潮流解算，又可以用于低压配电网的潮流解算，还可以同时解算输电网加配电网的混合潮流问题。

-Source flow calculation. Both high-voltage transmission networks can be used to calculate the trend, but also can be used in the trend of low voltage distribution network solver, but also at the same time increase the supply grid solver distribution network issues mixed trend.