Application of IEC 61850 proxy in seamless communication between digital substation and control centre

The paper deals with application requirements of seamless communication between digital substation and control centre, especially model harmonization between IEC 61850 and 61970. The necessity and feasibility of IEC 61850 proxy acting as a communication server in substation is introduced. It also describes the proxy software design of functions and architecture. The proxy makes full consideration of IEC 61850 and 61970 application technologies, such as modeling methods, configuration tool, real-time database, IEC 61850 ACSI client, services mapping, access security, maintenance and hardware. The proxy features prefect functions, simple configuration and easy maintenance, and will become an important front-end communication device in future construction of smart substation, providing technological support for seamless connections between heterogeneous systems in smart grid.