公开(公告)号：US20230151447A1

公开(公告)日：2023-05-18

申请号：US17913634

申请日：2021-03-16

Applicant: JFE STEEL CORPORATION

Inventor： Tomoyoshi OGASAHARA ,  Masahiro UNO ,  Koji YOSHIHARA ,  Kazushige YATSU

IPC: C21B5/00 ,  C21B7/24 ,  G05B13/02 ,  G05B19/418 ,  G05B23/02 ,  G06Q50/04

CPC classification number: C21B5/006 ,  C21B7/24 ,  G05B13/02 ,  G05B19/418 ,  G05B23/0294 ,  G06Q50/04 ,  C21B2300/04

Abstract: An optimal calculation method of an energy operating condition in an iron mill includes calculating, 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 such that the decision variable related to a power generation facility included in the energy facility is constant within a predetermined aggregation time.