Design and Implementation of Distribution Network SCADA System Based on J2EE Framework

In this paper, the problems exposed by the third generation of SCADA (supervisory control and data acquisition) based on the c-s(client-server) mode are analyzed. Then, a new distribution network SCADA based on the four-tier architecture of J2EE platform is built. Because of poor information sharing and interoperability of CORBA (common object request broker architecture) as the integration bus among application systems of power enterprises, the seamless integration between SCADA heterogeneous data platform which is based on standard IEC (International Electrical Commission) 61970, and other systems is achieved by means of Web services, and such integration is standard and open. The combination of EJB (Enterprise JavaBean) and Hibernate to implement the business logic and make data be persistent separately also makes the SCADA much more scalable and flexible. Because of its flexibility and extensibility, this new SCADA has great benefit to the automation course of electric power systems.