An optimal gas supply for a power plant using a mixed integer programming model

At Kawasaki Steel Mizushima Works, a new energy control system has been established in order to deal with energy and utilities in the steelworks. The system consists of the works' central computer, online computer, process computer and digital instrumentation system. The software system is divided into the planning system, execution system and evaluation system. As the representative topic of the execution system, an optimal gas supply amount for the joint electric power plant is determined. An optimal guidance for the gas supply amount is given to operators by solving a mixed-integer program by a decomposition method in process computer online realtime. This new energy control system has brought a satisfactory energy saving effect.