数字化变电站通信网络性能仿真分析

依据IEC 61850标准分析了数字化变电站的通信网络结构和数据流，利用OPNET Modeler建立了2层星型拓扑结构的数字化变电站通信网络动态仿真模型，基于该模型以过程网络中采样值报文的网络延时、站级网络中报告和控制报文的端到端延时为研究对象，对不同节点规模、不同网络配置和不同应用功能条件下的过程网络、站级网络的实时性能进行了仿真分析，根据仿真结论对数字化变电站通信网络的结构、网络带宽及网络设备的选取等提出了建议。

Simulation Analysis on Performance of Communication Networks in Digital Substations

According to IEC 61850 the architecture and data flow of communication network in digital substation(CNDS) are analyzed. By use of OPNET Modeler,a dynamic simulation model with two-layer star-shape topological structure for CNDS is built. Based on the built model and taking the network delay of sampled message in process network and the end-to-end delay of the Report and Control message in station network as research objects,the simulation analyses on real-time performances of process networks and station networks under the condition of different node scale,different network configuration and different application functions are conducted. In the light of simulation results,the suggestions on architecture of CNDS,network bandwidth and selection of network devices are put forward.