Substation automation high speed network communication platform based on MMS+TCP/IP+Ethernet

Ethernet, which is gradually being used in the process bus in the communication of automation devices, has become the focus of manufacturers and customers. In order to fulfill the requirements, IEC TC57 will publish the IEC61850 standard for substation automation network communication. All evidences show that network communication technology, based on manufacturing message specification (MMS), TCP/IP and Ethernet, is the trend of the next substation automation communication system. The above communication platform will have many benefits for manufacture and system integration. This paper firstly gives the basic principles of the network communication platform integration frame for substation automation, including software and hardware platform. It then studies the real-time performances and priority of Ethernet and the MMS, TCP/IP protocols used over Ethernet. This paper also discusses the real-time network communication models of client/server and peer-peer in substations and gives simulation results of event-driven data transfer.