数字化变电站网络通信在线故障诊断系统的设计与应用

Design and application of on-line fault diagnosis system for network communication of digital substation

针对基于IEC61850标准变电站自动化系统网络通信的特点,设计了变电站网络通信在线故障诊断系统。系统采用故障特征描述模型与故障分析程序分离的设计方法,动态加载故障模型,在增加故障特征描述模型时,无需修改故障分析软件。利用网络通信记录仪可记录制造报文规范(MMS)、通用面向对象的变电站(GOOSE)、采样值(SV)等信息;根据报文类型将故障模型分为MMS故障、GOOSE故障、SV故障和网络异常故障4类模型。通过工程实践表明,所设计的系统可及时发现网络的通信故障。

An on-line fault diagnosis system is designed for the network communication of substation automation system based on IEC61850 standard,the fault description models of which are designed independently and loaded dynamically,so that it is not necessary to modify the fault analysis program when new fault model is added to.The network communication recorder is used to record the information of MMS （Manufacturing Message Specification）,GOOSE（Generic Object Oriented Substation Event）,SV（Sampling Value）,etc.According to the message type,the fault models are divided into 4 categories：MMS failure,GOOSE failure,SV failure and network failure.Practices show that the system detects the network communication fault in time.