面向智能变电站信息流可靠性分析方法研究

Research on reliability analysis method of information flow in intelligent substation

针对现有变电站状态监测与维护决策中单一定性评估方法存在的不足,文中在分析智能变电站信息流的基础上,建立了信息流可靠性评估模型,从信息流传输延迟和数据丢失率两个方面分析了智能变电站网络的可靠性。通过仿真对智能变电站网络的信息流稳态、极限流量、具体场景和异常流量运行模式的可靠性进行了评估。结果表明,该方法能在一定程度上评估变电站网络信息流的可靠性。为我国智能变电站信息流可靠性的发展提供参考和借鉴。

The existing single consistency evaluation method has shortcomings of state monitoring and maintenance decision in substation.Based on analyzing the characteristics of intelligent substation and its information flow,this paper establishes a reliability evaluation model of information flow,which analyzes the reliability of intelligent substation network from two aspects of information flow transmission delay and data loss rate.Through simulation,the reliability of the four operating modes of intelligent substation network is evaluated,including steady state of information flow,limit flow,specific scene and abnormal network flow.The results show that this method can evaluate the reliability of information flow in intelligent substation network to some extent,which provides reference for the development of reliability assessment of intelligent substation network information flow.