Analysis of electrical network vulnerability using segmented cascading faults graph

被引:4
作者
Wei, Xiaoguang [1 ]
Gao, Shibin [1 ]
Huang, Tao [2 ]
机构
[1] Southwest Jiaotong Univ, Sch Elect Engn, Chengdu, Sichuan, Peoples R China
[2] Politecn Torino, Dept Energy, Turin, Italy
基金
中国国家自然科学基金;
关键词
Vulnerability indices; Transmission network vulnerability; Fault chain; Cascading fault graph; POWER GRIDS; LINE;
D O I
10.1016/j.compeleceng.2019.106519
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
To reveal the mechanism of fault propagation and temporal information between electrical network branches intuitively and vividly, we have proposed a fault chain-based cascading fault graph (CFG) that considers the topological, physical, and fault operational features from an overload mechanism perspective. The proposed CFG is used to construct metrics to identify vulnerable branches of an electrical network. Furthermore, because the vulnerable branch rankings change with the changing fault chain length, the ranking results' change rules are investigated. As a result, the branch vulnerabilities' characteristics are found to be different at different stages under sequential attacks. Inspired by the characteristics, the CFG5 are divided into three sub-CFGs, based on load shedding threshold, to identify the vulnerable branches at different stages. The proposed method is used to identify the vulnerable branches of the IEEE 39- and 118-bus systems, and its effectiveness is validated by investigating load shedding of the systems under deliberate attacks. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页数:13
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