期刊
TRANSPORTMETRICA A-TRANSPORT SCIENCE
卷 18, 期 3, 页码 1401-1419出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/23249935.2021.1942304
关键词
Metros; cascading failure; capacity assignment; network robustness; load fluctuation
资金
- National Natural Science Foundation of China [52072068]
- National Key Research and Development Program of China [2019YFB1600200]
This paper analyzes the metro cascading failure induced by load fluctuation and presents a robust station capacity assignment method. By studying the actual case of Nanjing metro, it is found that small station tolerance and larger load fluctuation can easily lead to global network failure. The coupling effects of station capacity, station tolerance, and load fluctuation strength on network robustness are investigated to obtain optimal model parameters for robust station capacity assignment.
In this paper, we analyze metro cascading failure induced by load fluctuation and present a robust station capacity assignment method. A cascading failure model is proposed by considering system initial balance state, load matching, and capacity-based load redistribution. Based on random walks, an initial failure model is proposed to simulate different load fluctuations that represent unrealistic passenger flows for failure analysis. We study the actual case of Nanjing metro. The results show that small station tolerance and larger load fluctuation can lead to global network failure easily. The phase transition between network functional state and global failure is abrupt and first order-like, which is sensitive to station tolerance and load fluctuation strength. The coupling effects of station capacity, station tolerance, and load fluctuation strength on the network robustness are investigated and the optimal model parameters for robust station capacity assignment are obtained.
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