基于IEC 61850的变电站自动化系统连锁故障分析
Analysis on Cascading Failures of Substation Automation System Based on IEC 6185
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摘要: IEC 61850定义的逻辑节点之间存在复杂的交互关系,变电站自动化系统中的故障有可能通过这种关系在系统中进一步传播。从复杂网络理论出发,将逻辑节点作为网络的节点,逻辑连接作为网络的边,则逻辑节点之间的交互关系就可以抽象成一个复杂网络。首先,统计这个复杂网络的相关特征参数,结果表明,逻辑节点之间的交互关系同时具有小世界和无标度特征;然后,建立了基于耦合映像格子(CML)的变电站自动化系统连锁故障模型,仿真实验在一定程度上揭示了逻辑节点的故障在系统中的传播规律。最后,以T1-1型变电站为例,分析其自动化系统中逻辑节点交互的特性,并应用所建立的模型进行了仿真,进一步验证了从逻辑节点交互特性角度分析变电站自动化系统的故障传播的有效性。Abstract: The complex interactions are existed among logical nodes defined in IEC 61850.The faults in substation automation system may further propagate via these interactions.Based on the perspective of complex network theory,the logical nodes are treated as network’s nodes,the logical connections are treated as network’s edges,complex relationships among logical nodes can be expressed as a complex network.First,the relevant statistic parameters of complex network are calculated.The results show that the interaction relations among logical nodes have the characteristics of small-world and scale-free at the same time. Then the cascading failure model of substation automation system is established based on coupled map lattices（CML）. Simulation results show that the model reveals the propagation rule of logical node failures in the system.Finally,the interactive features of the logical nodes in automation system of T1-1substation are analyzed,and the simulations based on the established model further validate the effectiveness of the method.
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