智能变电站过程层组网方案分析

Analysis of Network Scheme for Process Layer in Smart Substation

智能变电站是智能电网建设的重要环节,过程层网络则是智能变电站的重要基础,直接关系到全站数据采集和开关控制的可靠性和实时性。总结分析了智能变电站建设过程层设备所涉及的网络报文,针对数据采样和通用面向对象变电站事件(GOOSE)通信的不同组合方式所形成的网络方案进行了对比分析,讨论了采用IEEE 1588标准对时的三网合一组网方案和混合模式组网方案,针对500kV等级变电站过程层组网方式进行了实例讨论,最后介绍了虚拟网络划分所涉及的虚拟局域网(VLAN)和组播注册协议(GMRP)技术。

Smart substation is the key parts of smart grid and the network of process layer is an important foundation for smart substation which is related to the reliability and real-time of data acquisition and switch control.The type of process layer message which include generic object oriented substation event（GOOSE）,MSV（multiple sample value） and synchronization with network are generalized.The schemes of process layer network with different combination between GOOSE and MSV are discussed.The merge scheme of GOOSE,MSV and synchronization with IEEE 1588 is researched,the scheme of process layer network in a substation of 500 kV is discussed as an example.The virtual local area network（VLAN） and multicast registration protocol（GMRP） based on GARP which are used to divide the virtual network are proposed.