基于改进HITS算法的电网脆弱集合快速评估  

Rapid Identification of Vulnerable Set in Power Grid Based on Modified HITS Algorithm

作　　者：袁博 张文一 张雪敏[2] YUAN Bo;ZHANG Wenyi;ZHANG Xuemin(Economic and Technology Research Institute,State Grid Hebei Electric Power Supply Co.,Ltd,Shijiazhuang 050021,China;State Key Laboratory of Control and Simulation of Power System and Generation Equipments(Department of Electrical Engineering,Tsinghua University),Beijing 100084,China)

机构地区：[1]国网河北省电力有限公司经济技术研究院,石家庄050021 [2]电力系统及发电设备控制和仿真国家重点实验室(清华大学电机系),北京100084

出　　处：《电力系统及其自动化学报》2020年第4期145-150,共6页Proceedings of the CSU-EPSA

摘　　要：脆弱线路在连锁故障传播中起着推波助澜的作用。为了更加全面地辨识脆弱线路,本文提出一种基于超链接诱导主题搜索算法的电网脆弱线路识别方法。首先,利用线路开断后的潮流转移量与线路容量裕度建立各线路故障转移的相关性网络。其次,利用改进超链接诱导主题搜索算法,计算相关性网络中各线路的权威值和枢纽值。最后,结合基于蒙特卡罗采样的连锁故障仿真工具,在河北南网系统中验证了所提算法得到权威值排名和枢纽值排名的有效性。与现有方法相比,该方法既能准确识别排名高的脆弱线路,又具有计算速度快的优点。Vulnerable lines play an important role in the propagation of cascading failures. To identify these lines more comprehensively,a novel method based on the hyperlink-induced topic search(HITS)algorithm is proposed for the vulnerable line identification in power grid. Firstly,a correlation network for the failure transfer on each line is established according to changes in power flow and the margin of line capacity after each line trips off. Secondly,the modified HITS algorithm is used to calculate the authority and hub indexes of each line in the correlation network. Finally,the proposed method is applied to the Hebei South power system,and its validity in calculating the ranking of authority and hub indexes is verified with the combination of the cascading failure simulation tool based on Monte Carlo sampling.Compared with the existing methods,this method can not only identify the high-ranking vulnerable lines accurately,but also have the advantage of high calculation speed.

关 键 词：超链接诱导主题搜索算法 脆弱线路 连锁故障 相关性矩阵 权威值 枢纽值 

分 类 号：TM7[电气工程—电力系统及自动化]