考虑节点静态电压稳定性的电网元胞自动机故障演化模型

在电力系统大停电过程中往往伴随着电压失稳问题，为了研究停电事故发展机理，从事故演化过程中电网各节点电压变化入手，依据元胞自动机理论进行建模。将节点作为元胞，根据静态电压稳定性理论定义了元胞状态以及转换规则，建立了一种考虑节点静态电压稳定性的电网元胞自动机故障演化模型，并定义了电压稳定裕度指标。在IEEE39节点系统中，利用该模型进行单次停电事故仿真，分析了不同扰动方式下停电事故过程中节点电压稳定裕度的变化。进一步，利用该模型进行了多次停电事故仿真，探究了负荷扰动方式及电网热稳定裕度对各节点电压稳定裕度的影响。

Cellular Automata Evolution Model of Power Failure Considering Grid Node Static Voltage Stability

Power system blackouts are often accompanied by voltage instability problems. In order to study the mechanism of power failure evolution，starting from the voltage variation of each grid node during accident evolution， the theory of cellular automata is applied to modeling. The cell state and transition rules are defined according to bus voltage，so as to establish a grid cellular automaton model considering the static voltage stability of nodes. Single power failure accident simulation is carried out with this model in the IEEE39 node system， and the changes of node voltage stability during power failure under different disturbance modes are analyzed. Furthermore， this model is used to simulate multiple power failure accidents， and explore the influence of load disturbance mode and grid thermal stability margin on voltage stability margin of each node.