关键词: 智能变电站, 软件定义网络, OpenFlow, 网络交换机

Abstract: SWith the improvement of standardization and intelligence level of secondary equipment, a kind of communication network more efficient and smarter is needed in smart substation to meet the substation operation and maintenance requirements, to achieve the equipment plug and play, intelligent monitoring, subnet secure isolation and the element interchange. For the application needs of substation network unified management, security isolation between subnets and equipment compatibility and interchangeability, a SDN-based substation network architecture was proposed in this paper. IEC 61850 and OpenFlow protocols were used for network architecture design. OpenFlow controller was used to control and isolate the individual subnets to implement network device management and subnet secure isolation. The experimental results prove that precise traffic control based on service types, and securely data isolation can be implemented with the proposed substation SDN-based network architecture. It has a very important application value for promoting the operation and maintenance level of smart substation.

Key words: smart substation, Software Defined Network (SDN), OpenFlow, network switch