A Power Plant Overhaul Management Information System Based On J2EE And Web Services

Overhaul is an important component of electric power enterprise day-to-day work including electrical equipment maintenance, defects management, files management, and so on. The status of electrical equipment affects the running of the power system, and it plays an important role in the entire power production. Therefore, one perfect overhaul management information system is significant for the quality of overhaul, safe operation of electrical equipment and the economic benefits of power enterprises. Because of the extended capacity of the large-scale installation, increased data greatly and high frequency of information communication, the system uses the C/S/S structure to process the huge information. As one mature distributed technology, J2EE has been applied to many fields, which provides a scalable and patulous framework for enterprise application. To solve the communications among platforms the system adopts the web services technology. Combined J2EE with web services has become the main solution to enterprise application.Through investigating of overhaul requirement, the system applies the web services to C/S/S architecture. Focus on overhaul management, this paper has done some work as follows:At first, the paper researches on the work flow, requirement and the unresolved questions in the overhaul to generate the requirement specification documents, which produces the requirement analysis the paper confirms the functional structure and system module division; and then it gives the design of the system in detail, including the data base design and the pages design.After analyzing the system modules, this paper makes choices of the server, environment and the development tools. In order to upgrade and maintain expediently, we select the loosely coupled J2EE architectures to set the business logic in different platform; we use the web services to access data.This paper uses the visualization work flow to standardize the overhaul management, and it also helps to improve work efficiently. And one of the important modules - overhaul planning module is achieved by the network plan technology. The paper uses the shortest path and topological sorting methods to generate power plant overhaul network automatically, and realizes to control the overhaul process dynamically. At last, the paper finishes the coding of the power plant management information system.