抗毁性分析是电网安全研究的核心内容之一,因传统分析方法无法有效分析故障产生的过程,对研究抗毁性存在局限性,基于复杂网络理论研究电力网络的抗毁性并以上海市崇明区为例实证分析。对电力网络随机攻击和蓄意攻击,得出攻击后网络效率和最大连通子图数量变化,并提出网络效率变化率作为评估抗毁性的参数。根据仿真结果,提出一种基于实时接近中心性优先攻击策略的分段式保护方案,提高电力网络的抗毁性,以保证电网安全。
Invulnerability analysis is one of the core contents of power grid security research. Traditional analysis methods cannot effectively analyze the process of failure generation, and have limitations in the research of invulnerability analysis. This paper studies the invulnerability analysis of power networks based on complex network theory, and conducts an empirical analysis using Chongming District of Shanghai as an example. For random attacks and selective attacks on the power network, the changes in the network efficiency and the maximum number of connected subgraphs after the attack are obtained, and the network efficiency change rate is proposed as a parameter to evaluate the invulnerability. According to the simulation results, a segmented protection scheme based on real-time centrality closeness priority attack strategy is proposed to improve the invulnerability of the power network and ensure the safety of the power grid.
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