Design And Implement Of DMIS Basing On Recomposition Of Enterprise Information

This paper introduces background and structure of electrical power grid dispatching management information system (DMIS). The principal purposes of DMIS are to integrate information among distinct software systems, to optimize working flow and to raise cooperation efficiency. More information should be shared and the way of exchanging data should be improved.Different from traditional applied systems, DMIS is not an isolated, newly-built system. In view of function, DMIS can be divided into three parts: enterprise management subsystem, grid operation management subsystem and other assistant subsystem. On base of analysis of requirements, a mixed software platform is adopted. Lotus Domino/Notes is an excellent software platform with which enterprise management subsystem is developed. Grid operation management subsystem is developed with Microsoft Dot Net. J2EE provides a 3-layers software architecture and more open and reliable software are developed with it.The principal tasks of DMIS are to develop working plan and tasks management. It's urgent to be solved that the data is repeated and conflict. DMIS extracts the common and basic data and identifies the objects and defines the relationships among those objects. Such basic data includes two fields: grid equipments objects and management objects.The author also designed working mode of basic data center and its interfaces by XML Web Service technology. Besides the accordant definition and description of data by UML tools, we need a data center that can serve as an unique information provider. Other systems haven't to put into repeated information again. And they have to synchronize with data center when necessary. The data center is located in the center of this circle-style communication structure. It provides a standard means of interoperating between different software applications. It gets and provides data through a series of special interfaces with XML web service. When data changed, the system will add a piece of news with time-stamp immediately to the list of news. Other peripheral systems can get the list of news and decide the strategy that will be adopted.A method of mapping relation between Lotus Domino database and relative database is set up. In order to develop open and reliable software applications, 3-layer software architecture is applied. But it does not attempt to impose restriction on how software is developed.Now the enterprise has been benefiting from DMIS. It has been proved that the policy of basic data center is feasible. The DMIS is now playing an undeniable role to improve the enterprise's management.