Optimal Design of Power Supply Scheme for Sharing Resources in Urban Rail Interchange Stations

LIU Wei; DENG Haotian; XU Qian; RAO Xiaoming

doi:10.3969/j.issn.0258-2724.20230146

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LIU Wei, DENG Haotian, XU Qian, RAO Xiaoming. Optimal Design of Power Supply Scheme for Sharing Resources in Urban Rail Interchange Stations[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20230146

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LIU Wei, DENG Haotian, XU Qian, RAO Xiaoming. Optimal Design of Power Supply Scheme for Sharing Resources in Urban Rail Interchange Stations[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20230146

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Optimal Design of Power Supply Scheme for Sharing Resources in Urban Rail Interchange Stations

doi: 10.3969/j.issn.0258-2724.20230146

1.
School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China
2.
Shanghai Tunnel Engineering & Rail Transit Design and Research Institute, Shanghai 200235, China

Received Date: 06 Apr 2023
Rev Recd Date: 11 Sep 2023

Available Online: 24 Mar 2025

Abstract

Abstract

In the context of power supply resource sharing between different lines through interchange stations, optimizing the power supply system design can help reduce active power losses in the network. By considering the constraints of multi-operation scenarios, a novel optimal design method for a power supply scheme for sharing resources in urban rail interchange stations based on a triple-checking algorithm was proposed. A topological model for centralized power supply systems for urban rail and a mathematical model for resource sharing in interchange stations were established. A multi-branch tree topology search was employed to generate a candidate solution set, which was then optimized using the triple-checking algorithm to identify the optimal power supply scheme with the lowest active power loss in the network. An analysis was performed using the actual power supply system of five lines as an example. The results show that compared to the traditional main substation-based power supply scheme for sharing resources, the proposed power supply scheme for sharing resources in urban rail interchange stations reduces the initial construction costs of the overall power supply system and reduces annual operational network losses by 2 296.58 MW•h. This research provides a reference for the design of centralized urban rail power supply systems in networked operations.
- urban rail transit,
- power supply system,
- resource sharing,
- inter-line connected ring network,
- main transformer capacity

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