基于分形机理的复杂电力网络脆弱性评估及鲁棒性提升策略研究  

Vulnerability Evaluation and Robustness Improvement Strategy of Complex Power Network Based on Fractal Mechanism

作　　者：陈志鹏 谢宁[1] 王承民[1] 钱振宇 CHEN Zhipeng;XIE Ning;WANG Chengmin;QIAN Zhenyu(School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Minhang District,Shanghai 200240,China)

机构地区：[1]上海交通大学电子信息与电气工程学院,上海市闵行区200240

出　　处：《电网技术》2021年第2期657-664,共8页Power System Technology

基　　金：国家电网有限公司科技项目(B3440818K010)。

摘　　要：电网规模的扩大及其互联程度的提高增加了电力系统运行的复杂性,分析电网脆弱性并给出改进策略变得尤为重要。结合对分形机理的研究,发现枢纽节点直接相连会使网络更加脆弱,据此设计了一种基于最大边介数生成树的复杂网络拓扑改进策略,该策略可提升网络的分形特性、降低小世界特性,从而能显著提升网络的鲁棒性,并解决了传统方法经济性低的问题。基于复杂网络理论,结合若干种节点或支路重要度指标设计了相应的攻击模式,并对复杂网络进行了脆弱性评估,最后通过几个电力网络算例验证了所提策略的有效性。The constantly expanding scale and interconnectedness of the power network have been increasing the complexity of the network operation. It is particularly important to analyze the network vulnerability and provide improvement strategies. Combined with the research on the fractal mechanism, it is found that the hub nodes connected directly will make the network more vulnerable. Based on this, a strategy for reconstructing topology of complex networks based on the maximum betweenness weight spanning tree is designed. The strategy increases the fractal of a network and reduce its small-world features. It significantly improves the network robustness and has better economy than the traditional strategies. Based on the complex network theory, several kinds of node or branch importance indicators are defined and the corresponding attack modes are designed to evaluate the vulnerability of complex networks. Several power network cases are applied to verify the effectiveness of the proposed strategy.

关 键 词：复杂网络 分形 脆弱性 网络重构 边介数 最大生成树 

分 类 号：TM715[电气工程—电力系统及自动化]