电力生命线网络多节点关键群组评估  

Evaluation of multi-node key groups in power lifeline network

作　　者：肖宝强 赵旭东 陈顺 席俊鹏 肖元昊 Xiao Baoqiang;Zhao Xudong;Chen Shun;Xi Junpeng;Xiao Yuanhao(State Key Laboratory,Army Engineering University,Nanjing 210007,China)

机构地区：[1]陆军工程大学国家重点实验室,南京210007

出　　处：《电测与仪表》2020年第21期47-53,共7页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(51708554);江苏省自然科学基金资助项目(BK20181336)。

摘　　要：电网关键节点的辨识是电力系统安全稳定运行的重要内容之一,目前对于电网关键节点的分析基本是针对单一节点,未考虑多节点的共同影响,为此提出了多节点关键群组的辨识方法。为准确辨识电网多节点关键群组,采用基于复杂网络理论和系统物理特性相结合的方式,同时考虑电网的可调性和抗毁伤性进行综合评估。通过构建网络节点效率矩阵,以系统动力学毁伤调整后的稳态为基础,并使其满足最小切负荷原则,模拟不同节点组合的多节点群组影响力。结果表明关键节点并非一直存在于关键群组内,多节点群组的影响力并非是单一节点影响力的简单叠加,多节点关键群组相较于群组数量占比很小。该方法对电网多节点关键群组辨识、利用和防护具有重要意义,可以有效指导灾前防护和灾后恢复。The identification of the key nodes of the power grid is one of the important contents for the safe and stable operation of the power system.At present,the analysis of the key nodes of the power grid is basically for a single node,without considering the joint influence of multiple nodes,therefore,an identification method of multi-node key groups is proposed in this paper.In order to accurately identify the key groups of the multi-node,a method based on the combination of complex network theory and physical characteristics of the system is adopted,and the tunability and damage resistance of the power grid are considered for comprehensive evaluation.By constructing the network node efficiency matrix,based on the damage-adjusted steady state and making it meet the principle of minimum load shedding,the influence of multi-node groups with different node combinations is simulated.The results show that the key nodes do not always exist in the key groups.The influence of the multi-node groups is not a simple superposition of the influence of a single node,and the multi-node key groups account for a small proportion of the group.This method is of great significance to the identification,utilization and protection of multi-node key groups of the power grid,and can effectively guide pre-disaster protection and post-disaster recovery.

关 键 词：电力网络 复杂网络 效率矩阵 节点群组 毁伤恢复 

分 类 号：TM715[电气工程—电力系统及自动化]