数字化变电站过程层通信网络实时性仿真分析

Communication Network Real-time Performance Simulation Analysis Based on Process Layer of Digital Substation

阐述了基于IEC 61850的数字化变电站的三层结构和关键功能技术。对数字化变电站过程层数据信息进行了分析,并对基于IEC 61850-9-2的SV报文及GOOSE报文进行流量大小分析,结合某数字化变电站工程采用OPNET仿真软件对变电站过程层IED设备的端到端延时进行了仿真,并以间隔为单位采用VLAN技术进行了对比分析。结果表明,交换式以太网完全能满足过程层的网络通信,而且采用VLAN技术可以提高网络通信的实时性。

The three-layer communication structure and key technology of digital substation based on IEC 61850 is introduced. The data of process layer of digital substation is analyzed, and the flow of SV packets and GOOSE packets on the basis of IEC 61850-9-2 is analyzed. Combined with a digitized substation project, the OPNET software is used to simulate the IED device end-to-end delay of process layer of digital substation, and the VLAN technology is used to make a comparative analysis in bay. The results show that the switched ethernet can satisfy the network communication of process layer in the digital substation and the VLAN technology can improve the real-time performance of network communication.