基于软件定义网络的智能变电站网络架构设计

随着智能变电站二次装置标准化、智能化水平的提升，需要有一种更高效、智能的通信网络以满足变电站运行和维护要求，能够实现设备即插即用、智能监测、子网间安全隔离以及设备通用互换。针对智能站网络统一管理、子网间安全隔离以及设备兼容性、互换性的应用需求，提出了一种基于软件定义网络（SDN）技术的变电站网络架构，将IEC61850和OpenFlow协议用于网络架构设计，利用OpenFlow控制器管控和隔离各独立子网，以实现网络设备管理和子网安全隔离。实验结果表明，所提架构可实现流量基于业务类型的精准控制和数据的安全隔离，对于提升变电站运行和维护水平有着非常重要的应用价值。

Network architecture design of smart substation based on software defined network

With 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 equipment plug and play, intelligent monitoring, subnet secure isolation and element interchange. For the application needs of substation network unified management, security isolation between subnets and equipment compatibility and interchangeability, a Software Defined Network (SDN)-based substation network architecture was proposed. 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 show 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.