Cascading Failure Propagation and Mitigation Strategies in Power Systems

被引:12
作者
Li, Meixuan Jade [1 ]
Tse, Chi Kong [1 ]
Liu, Dong [1 ]
Zhang, Xi [2 ]
机构
[1] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China
[2] Beijing Inst Technol, Sch Automation, Beijing 100081, Peoples R China
来源
IEEE SYSTEMS JOURNAL | 2023年 / 17卷 / 02期
关键词
Power system protection; Power system faults; Generators; Power systems; Mathematical models; Power system stability; Power system dynamics; Adaptive mitigation strategy; cascading failure propagation; network flow; power flow redistribution; power system clustering; VULNERABILITY ANALYSIS;
D O I
10.1109/JSYST.2023.3248044
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this article, we investigate the local and nonlocal failure propagation patterns in power systems and propose effective mitigation strategies. It is widely acknowledged that the sequence of failure events of component overloading is determined by power flow redistribution. To understand the power flow redistribution process, we analyze the prefault power flow condition using network flow theory and by clustering the system into several regions with balanced local power flow. We observe that faults triggering local power imbalance would lead to remote power transfer and faults causing no local power imbalance would lead to local power redistribution. The improved understanding of the failure process permits us to develop effective mitigating strategies consisting of adaptive power balance restoration and selective edge protection for cascading failure propagation. In addition, we propose a set of indexes to measure the local and nonlocal propagation risks of cascading failures. Numerical simulations on the IEEE 118- and 300-bus systems demonstrate that the proposed mitigation strategies can significantly reduce the blackout sizes and are tolerant to incorrect transmission line tripping.
引用
收藏
页码:3282 / 3293
页数:12
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