Abstract: 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.

Key words: discrete manufacture, energy model, constraint relation, energy consumption

摘要： 为精细管理离散制造业能源，实现离散制造业节能降耗，针对离散制造业能源消耗分散、产品能耗统计困难的问题，建立了能源模型，包括能源需求模型、能源采购模型、能源存储模型、能源使用模型、能源分配模型和能耗核算模型。在此基础上研究了能源模型与制造过程的约束关系。开发了包括能源管理工具、能耗分类核算工具和能耗分析工具的离散制造业能源信息管理原型系统，并设计了相应的离散制造业能源数据库，使企业可以对能源使用进行精确、高效地管理。最后通过企业的应用表明了该工具有效、实用，并且大大降低了企业经营成本。

关键词: 离散制造业, 能源模型, 约束关系, 能源消耗