110kV智能变电站过程层建网方案

Process Layer Construction Scheme of 110kV Smart Substation

在智能变电站三层网络结构中,过程层为直接与一次设备连接的最底层,其信息传输要求准确、可靠、快速。分析了过程层网络拓扑结构、采样值传输协议分析、数据传输通信模型、网络负荷量、保护的"直采直跳"方式。结合实例,提出了110kV智能变电站采用SV和GOOSE两种过程层组网方案,两网物理上相互独立,采用星型拓扑结构,双重化配置,满足了继电保护点对点"直采直跳",及继电保护双重化配置的两个过程完全独立的原则。

In the three-layer network configuration of smart substation, the process layer is the bottom which is directly connected to the primary equipment and its information requires correct, reliable and fast transmission. Analysis was made to the process layer network topology structure, sampling value transmission protocol, data transmission communication model, network load quantity and protective ＂ direct sampling direct tripping＂ method. Combined with actual examples, this paper raised construction network schemes of SV and GOOSE process layers in 110 kV smart substations. The two networks were independent from each other on physics, adopting star type topology structure and doubled disposition, which meets relay protection point to point ＂direct sampling direct tripping＂; and two processes completely independent principle of relay protection doubled disposition.