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Title: Bottlenecks detection of track allocation schemes at rail stations by Petri nets
Authors: Jia, WZ
Mao, BH
Ho, TK
Liu, HD
Yang, B
Keywords: Bottlenecks detection
Petri nets
Rail stations
Track allocation schemes
Issue Date: 2009
Publisher: 中國學術期刊 (光盤版) 電子雜誌社
Source: 交通运输系统工程与信息 (Communication and transportation systems engineering and information), 2009, v. 9, no. 6, p. 136-141 How to cite?
Journal: 交通运输系统工程与信息 (Communication and transportation systems engineering and information) 
Abstract: Robustness of the track allocation problem is rarely addressed in literatures and the obtained track allocation schemes (TAS) embody some bottlenecks. Therefore, an approach to detect bottlenecks is needed to support local optimization. First a TAS is transformed to an executable model by Petri nets. Then distrubances ananlys-is is performed using the model and the indicators of the total trains' departure delays are collected to detect bottlenecks when each train suffers an disturbance. Finally, the results of the tests based on a rail hub linking six lines and a TAS about thirty minutes show that the the minimum buffer time is 21 seconds and there are two bottlenecks where the buffer times are 57 and 44 seconds respectively, and it indicates that the bottlenecks do not certainly locate at the area where there is minimum buffer time. The proposed approach can further support selection of mufti schemes and robustness optimization.
ISSN: 1009-6744
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