OPTIMUM CALCULATION METHOD FOR ENERGY MANAGEMENT CONDITION AT IRON MILL, OPTIMUM CALCULATION DEVICE FOR ENERGY MANAGEMENT CONDITION AT IRON MILL, AND OPERATIONAL METHOD OF IRON MILL

• Main Authors: YATSU, Kazushige, UNO, Masahiro, OGASAHARA, Tomoyoshi, YOSHIHARA, Koji
• Format: Patent
• Language: English; French; German
• Published: 08.02.2023
• Subjects: CALCULATING; CHEMISTRY; COMPUTING; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; COUNTING; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MANUFACTURE OF IRON OR STEEL; METALLURGY; METALLURGY OF IRON; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR

An optimal calculation method of an energy operating condition in an iron mill according to the present invention calculates, using a total energy operation cost of the iron mill within a predetermined period of time from a current time as an evaluation function, an operation condition of an energy facility in the iron mill as a decision variable such that a value of the evaluation function decreases, at each predetermined time within the predetermined period of time, based on actual values and estimated values of a generation amount and a used amount of energy utility for each of factories comprised in the iron mill. The method includes a step of calculating the decision variable by imposing an equality constraint so that the decision variable related to a power generation facility included in the energy facility is constant within a predetermined aggregation time.