基于过程总线的母线保护通信体系结构

Communication Architecture of Process Bus Based Busbar Protection

合理地设计变电站过程层网络的拓扑结构,最大程度地实现信息共享,并保证各种保护、控制系统的可靠性,是数字化变电站发展所面临的一个重要问题。介绍了过程总线的相关技术,分析了采样值(SAV)报文和面向通用对象的变电站事件(GOOSE)报文发布者/订阅者通信模式的2种具体实现方式,提出了3种基于不同过程总线的母线保护通信体系结构,并利用OPNET Modeler软件进行了仿真分析。仿真结果表明了所提出的通信结构的可行性,通过比较分析得出了各种通信结构的适用范围,对过程层通信网络的设计具有一定的参考价值。

It is a crucial problem to rationally design the topological structure of the substation communication system in developing future digital substations in order to achieve data sharing and enhance the reliability of the protection and control system. The main techniques of the process bus are described and two methods of realizing publisher/subscriber communication for sampled value （SAV） and generic object-oriented substation event （GOOSE） messages are proposed. Three kinds of busbar protection communication architectures based on different process buses are presented and simulated in OPNET Modeler. The results show the feasibility of these communication architectures. The applicable scopes of different communication architectures are discussed after comparison, which may be valuable for design of the process level communication network.