中文说明：为了更好
English Description：
For the better operation of power system , the operator has to maintain constant voltage , constant frequency , uninterrupted power supply and low cost per KWH can be realized by tapping more hydro power than thermal and nuclear power generation but in real practical power systems 60%of generation is produced from thermal and nuclear stations.The fuel cost of thermal generation is very high . If the thermal generating units of a power station are operating economically minimizing the fuel cost while supplying specified power demand then cost per KWH can be reduced to an optimal value and significant saving can be achieved in the fuel cost without additional investment.This aspect of determination of optimal values of Power generation P1,P2,P3