Study on energy models and constraint relations in discrete manufactures

In order to manage energy utilization precisely in discrete manufactures and realize energy saving,energy management models were proposed firstly aiming at dispersive energy consumption and the problem of product energy consumption calculation.Energy requirement model,energy purchase model,energy storage model,energy use model,energy distribution model,and energy accounting model were included in the energy management models.Secondly the restriction relationships between energy model and manufacturing process were studied.Thirdly an energy information management system including an energy management tool,an energy consumption accounting tool and an energy consumption analysis tool was developed based on these models.Then the corresponding energy databases in discrete manufactures were designed to manage energy utilization precisely and efficiently in discrete manufactures.Finally practicability and effectiveness of the tools were verified by a case of the enterprise application.And the cost of enterprise operation was reduced obviously.