基于OPNET的智能变电站继电保护建模与仿真

Modeling and simulation of relay protection for intelligent substation based on OPNET

智能变电站过程层网络的引入,使得继电保护的数据源与传输方式发生了很大变化,其动作性能与可靠性越来越依赖于通信网络。分析了智能变电站继电保护的数据流及各报文的通信机制,基于IEC61850标准在OPNET仿真软件上进行了过程层网络和继电保护IED设备的建模,实现了智能变电站继电保护的MU数据采集、SV报文、GOOSE报文、保护算法和保护出口的全过程仿真。结合电流保护实例,说明了建模仿真的原理和实现机制,验证了其可行性和有效性,为智能变电站继电保护的定量分析提供了新的有效研究工具。

The introduction of intelligent substation process-level network results in the great changes in me data source and transmission mode of relay protection. Its operation performance and reliability depend increasingly on the communication network. The data flow of relay protection and the communication mechanism of its messages are analyzed and the process-level network and IED devices are modeled based on IEC61850 by OPNET. The whole process simulation of relay protection in intelligent substation is implemented,including MU data acquisition,SV messages,GOOSE messages,protection algorithm and protection output. With the current protection as an example,the principle and implementation of modeling and simulation are introduced and its feasibility and validity are verified,which provides an effective tool for quantitative analysis of relay protection in intelligent substation.