Development Of .NET Based Web Server For Optimal Maintenance Of Hydropower Plants

With the development of science technology, the technique of on-line monitoring and fault diagnosis recently have been widely applied on the heavy equipments in the field of various industries. At present, the equipment mainly adopt the centralized on-line monitoring and the fault diagnosis, which are limited to the territory. Therefore, to build the system based on Internet/ Intranet, the remote supervisory and the fault diagnosis become an inevitable choice.On the basis of the comprehensive analysis results of the researched present situation of Yangtze River's optimal maintenance information system of electric power, the essay expatiates the necessity of building up the Web server to set up an information platform of remote supervisory and fault diagnosis, and introduces to build the .NET platform of web server, the key technique of ASP.NET and ADO.NET as well, in the meanwhile, makes an exploratory investigation on the issue of web data accessing performance optimization and its security, based on which the solution scheme grounded on the optimal maintenance Web server of .NET hydroelectric power station and its security policy were held up.Web server uses the powerful Web application service framework of ASP.NET 2.0 enterprise grade, adopts the SQL Server 2000 construction distributed data base management system (DDBMS), utilizes the stored procedure and the optimized data access performance of ADO.NET connection pool technology, to establish the kind of platform of the set remote supervisory and its fault diagnosis information.This essay also makes the study of the system security environment to bring out the security policy of the web server and the security single sign-on (SSO), as well as the control policy of the web server based on the accessing control of roles (RBAC). At the same time, the doubling encryption interactive mechanism has been adopted to ensure the real-time of the data transformation and its security issue. Finally it shows the running status of the whole system on Yangtze River's electric power station.The establishment of the Web server of .NET hydroelectric power station provides the platform of information exchange for the remote monitoring and the fault diagnosis of units, and the date and the tech support for the repair based on condition of component of the units as well.