Universal Data Access And Its Soap Implementation Methods

Computer technology in the area of power systems are widely accepted today, but they are mostly based on many proprietary solutions or standards. World-wide, electric utility deregulation is expanding for so many heterogeneous solutions. Utilities spend an ever-increasing amount for real-time information exchange, costs for system integration and data maintenance are exploding just for the compatible work of data exchanging between different systems, it is not propitious to the developing of automation system for power system. Additionally, with the rapid development of information technology, the base of automation system, for example INTERNET technology, Object-Oriented technology, Multi-Agent technology, Security technology, is mature. To meet today's and future requirements a new standard with an advanced approach has been requested a few years ago. So the network and component technology are widely used in the automation software of power system.For the development of Component-integration, not only has the interoperation mechanism between components to be supplied, but also the CIM and CIS between them should be defined. So IEC puts forward IEC 61970 specification series, which make Power System application easily component-integrated, plug-and-play, open and interconnected. They also reduce the cost of integration and protect the resource of customers.The problems existing in present information integration of power system are introduced in this paper.Moreover,this paper advances the method to design the integration bus based on WebServices and GDA(Generic Data Access) for sharing the data of power system.The author has developed a SOAP based GDA (Generic Data Access) server.