考虑信息过程影响的配电信息物理系统可靠性评估

Reliability assessment of cyber-physical distribution system considering the impact of information processing

针对传统配电网日渐发展为一个配电信息物理融合系统,提出采用改进的最小路方法对考虑信息过程影响的信息物理配电系统进行可靠性评估。建立评估信息层网络拓扑连通性、传输时延和误码模型,以此进行信息层故障对物理层故障处理过程的影响分析。构建信息层与物理层的最小路模型,计算配电信息物理系统的可靠性,分析不同类型信息层元件故障以及接入网结构对配电信息物理系统可靠性的影响。最后采用算例验证了所提方法的可行性。

In view of the fact that the traditional distribution networks are developed into a cyber-physical distribution system,an improved minimal path method is proposed to evaluate the reliability of cyber-physical distribution system considering the influence of information process.The connectivity of network topology,the transmission delay and the error model of information layer are established to evaluate the influence of information layer faults on the fault processing process of physical layer.The minimal path model for the information layer and the physical layer is constructed to calculate the reliability of cyber-physical distribution systems,and the influence of different types of information layer component faults and access network structure on the reliability of distribution information physical systems is analyzed.Finally,a test system is given to verify the feasibility of the proposed method.