基于复杂网络理论的大电网结构脆弱性分析

Structural Vulnerability Analysis of Large Power Grid Based on Complex Network Theory

基于复杂网络理论,提出一种大规模电网结构脆弱性分析方法。该方法从电网拓扑结构出发,强调电网整体架构对故障传播的影响,有助于对连锁故障在大电网中传播机理的研究。通过对国内某一大区电网的故障模拟结果表明:电力网络的脆弱性与其网络拓扑有着密切的联系,同时本文所提出的介数指标相对于度数指标,能够更好地揭示电力网络的脆弱环节。

A new structural vulnerability analysis method of large power grid based on the newest progress in the field of complex network is proposed in this paper. Considering the power system as a complex network, this method emphasizes the effect of the topological characteristics on the structural vulnerability of power system, which is helpful to the study of mechanism of cascading failures. The simulation results of a practical large power grid show that the structural vulnerability of power grid has close relationship with topological structure and the betweenness can identify the most vulnerable parts of the power grid.