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:: Volume 6, Issue 1 (9-2017) ::
ieijqp 2017, 6(1): 54-63 Back to browse issues page
Increasing Energy Efficiency in Urban Rail Transit by Integrated Speed Profile Optimization and Traveling Time Distribution
Saeed Ahmadi * 1, Ali Dastfan1 , Mohsen Assili1
1- Shahrood University OF Technology
Abstract:   (4505 Views)

High consumption of electric energy in urban railway systems have prompted many researchers to look for strategies of energy saving. Suitable service with high speed and accuracy is what passengers, as the main costumers of these systems, anticipate. In this regard, energy-efficient train operation due to its considering energy saving and punctuality simultaneously, is very important. In this paper, a solution for energy saving is proposed, so that the constraints related to traveling time are met. Meanwhile, the effect of employing variable regenerative energy recovery rate for each inter-station distance was shown in reducing total input energy of network. This work is conducted over a two-stage optimization process. First, considering the net energy of train and inter-station trip time as the objective functions, optimal speed profiles were provided for single train system. Then, by distributing traveling time over the inter-stations and using predetermined optimal speed profiles, the total input energy of the upstream network is minimized. The simulation results, based on actual operating data of line 1 Mashhad urban railway system confirm the effectiveness of proposed method.

Keywords: Energy saving, Urban railway, Speed profile, Regenerative braking energy, Non-dominated sorting, Energy-efficient train operation, bi-objective optimization
Full-Text [PDF 1282 kb]   (1434 Downloads)    
Type of Study: Research | Subject: Special
Received: 2016/10/21 | Accepted: 2017/05/21 | Published: 2017/09/5
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Ahmadi S, Dastfan A, Assili M. Increasing Energy Efficiency in Urban Rail Transit by Integrated Speed Profile Optimization and Traveling Time Distribution. ieijqp 2017; 6 (1) :54-63
URL: http://ieijqp.ir/article-1-391-en.html


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Volume 6, Issue 1 (9-2017) Back to browse issues page
نشریه علمی- پژوهشی کیفیت و بهره وری صنعت برق ایران Iranian Electric Industry Journal of Quality and Productivity
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