Research On Distribution Supervisory Control And Data Acquisition System Based On Soa And Cloud Computing Technology

Nowadays,the application of new Internet technology to the construction of smart power grid has gradually become a trend,which makes the development and application of power distribution automation technology enter a new stage.At the same time,the research and construction of automation related systems of distribution network will also face new challenges.As the nerve center of distribution network,the distribution supervisory control and data acquisition(DSCADA)system undertakes the real-time operation and status monitoring task of the distribution network.And the efficient and stable operation of the monitoring system reflects the development and application level of the distribution network automation technology to a certain extent.However,the current distribution supervisory control and data acquisition system mainly adopts the traditional centralized layout architecture,and the system shows high coupling mode.In this structure mode,the data interaction and function expansion of various parts and platforms are difficult,at the same time under the tight coupling of system data bus once failure occurs easily affect the normal operation of the whole system,and even cause the collapse of the system.In order to reduce the coupling degree of the system and solve the problem of data interaction and function expansion of traditional system,it is necessary to design a distribution supervisory control and data acquisition system of loosely coupled architecture pattern,on the premise of meet the demand of traditional system function at the same time for data interaction and function extension and ensure the safe and reliable operation of the system.In this paper,the realization method of the distribution supervisory control and data acquisition system is illustrated with the concept of service-oriented architecture(SOA).On the basis,to solve the contradiction between the high concentration of traditional distribution supervisory control and data acquisition system resources and the distribution of functional modules,a overall design of the software architecture and hardware structure of the system was carried out.At the same time,according to the common Modbus data transmission protocol in the communication of distribution supervisory control and data acquisition system,a protocol analysis method based on event query response mechanism is proposed.And the analytical work of Modbus communication protocol data is carried out.In addition,research on ASP.NET,AJAX,and HTML5 technologies based on the development of a global wide area network dynamic web page,the design of real-time monitoring module of the distribution supervisory control and data acquisition system is carried out,and the web page access technology of the module is realized.The paper also puts forward a new method of system integration and cloud computing platform,and studies the system cross-platform deployment to meet the practical engineering application demand of the system.This article starts with the top-level design of the system,a series of research and development work including system structure,data collection and function integration are carried out.Combined with a smart park distribution network transformation project,a distribution network monitoring system based on SOA and cloud computing technology is built.