电力系统潮流计算程序。标6，7，8的是潮流子程序，其中写main标记的是主程序，NR—powerflow的是newton raphson方法的潮流计算，另外两个分别是decouple和fast decouple方法。-6,7,8 is the trend of the standard procedure, which is the main marker to write main, NR-powerflow is newton raphson flow calculation method,

Techinque how to use fast decouple technique