基于异质元胞自动机的互联电网连锁故障控制措施

A control measure for interconnection power grid cascading failure based on heterogeneous cellular automata

为减少互联电网停电事故的规模及频率,提出了一种基于异质元胞自动机的互联电网连锁故障控制措施。首先,依据互联电网由多个不同特性的区域电网构成这一实际,并考虑区域电网间相互影响,建立了异质元胞自动机的互联电网连锁故障模型。其次,考虑各区域电网特性和不同故障阶段区域间的协调关系,提出了一种多区域多阶段线路潮流控制措施。最后,以IEEE118节点系统作为仿真案例,采用异质元胞自动机模型进行停电事故仿真,分别从幂律分布和故障时间序列两个方面验证了控制措施的有效性。并通过与其他控制措施比较,展示了其所具有的优越性。仿真结果表明:调度人员根据各区域电网运行情况,合理选择区域间的支援系数,可有效降低各区域电网大停电风险。

To reduce the scale and frequency of blackouts in interconnected power grid,a control measure for interconnection power grid cascading failure based on heterogeneous cellular automata is proposed.Firstly,according to the fact that the interconnected power grid is composed of multiple regional power grids with different characteristics,and considering the interactions among regional power grids,the interconnection grid cascading failure model based on heterogeneous cellular automata is constructed.Then,considering the characteristics of each regional power grid and the interregional coordination relationship in different fault stages,a power flow control measure is proposed.Finally,taking IEEE118 node system as simulation case,the heterogeneous cellular automaton model is used to simulate the power failure.The effectiveness of the control measure is verified from the power law distribution and fault time series respectively,then its superiority is demonstrated by comparing it with other control measures.The simulation results show that the dispatcher can effectively reduce the blackout risk of regional power grids by reasonably selecting the interregional support coefficient according to the operation conditions of regional power girds.