A brief outline of Energy Management System (EMS) in China is given and OPEN-2000 EMS, combined with the novel technique of computer science, is introduced. The system has been developed by Power System Control Divisi...A brief outline of Energy Management System (EMS) in China is given and OPEN-2000 EMS, combined with the novel technique of computer science, is introduced. The system has been developed by Power System Control Division of NARI and put into operation in the middle of 1998.展开更多
给出了一个石油管理领域应用的面向对象公共数据模型 PDMM(petroleum data model for management) ,论述了元模型的建立与表达、类结构组织和实体定义、属性及约束规则等模型构筑技术 .强调了通过引入“活动”、“特性”等超类使模型具...给出了一个石油管理领域应用的面向对象公共数据模型 PDMM(petroleum data model for management) ,论述了元模型的建立与表达、类结构组织和实体定义、属性及约束规则等模型构筑技术 .强调了通过引入“活动”、“特性”等超类使模型具有强大描述能力的特色 ,给出了模型的 EXPRESS语言描述方法 .展开更多
文摘A brief outline of Energy Management System (EMS) in China is given and OPEN-2000 EMS, combined with the novel technique of computer science, is introduced. The system has been developed by Power System Control Division of NARI and put into operation in the middle of 1998.
文摘给出了一个石油管理领域应用的面向对象公共数据模型 PDMM(petroleum data model for management) ,论述了元模型的建立与表达、类结构组织和实体定义、属性及约束规则等模型构筑技术 .强调了通过引入“活动”、“特性”等超类使模型具有强大描述能力的特色 ,给出了模型的 EXPRESS语言描述方法 .