基于电网故障拓扑分析及多数据综合的复杂故障诊断方法

针对由于断路器失灵造成的电网连锁故障,调度人员难以在短时间内详细分析故障原因、过程的问题,提出一种利用电网拓扑和多数据源综合分析的复杂故障诊断方法。即通过电网拓扑中断路器开合状态确定邻接矩阵,形成故障后电网的拓扑连接关系,对故障电网拓扑图的停电区域搜索,确定连锁故障的诊断类型,并详细分析故障录波数据,诊断出断路器失灵造成的连锁故障的原因。算例分析表明,该方案能有效诊断复杂故障,具有较好的应用前景。

Complex Fault Diagnosis Based on Grid Fault Topology Analysis and Multi-data Synthesis

In view of the grid cascaded failure caused by the failure of the circuit breaker, it is difficult for the dispatcher to analyze the fault cause and process in a short time. This paper proposes a complex fault diagnosis method that utilizes the power grid topology and multi-data source comprehensive analysis. The equipment connection relationship matrix is established through the state of the circuit breaker, and the topology connection relationship of the grid after the fault is formed. Then the fault diagnosis type of the fault grid topology is determined, as well as the diagnosis type of the cascaded fault. The detailed analysis of the fault recording data is utilized to diagnose the detailed cause and process of the cascaded failure caused by the failure of the circuit breaker. The analysis of the example shows that this method can effectively diagnose complex faults, and has a good application prospect.