Research on Traction Power Supply System for Shanghai Rail Transit Chongming Line
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 1
Abstract
[Objective] It is to address issues such as stray current corrosion and limited distance for DC traction power supply systems conventionally using rail return in urban rail transit. [Method] After conducting a comparative analysis of the application, technical characteristics and applicability indicators of AC 25kV/50Hz and DC traction power supply systems in major urban rail transit systems in China and abroad, and considering the uniqueness of Shanghai Rail Transit Chongming Line project, it is suggested to adopt DC 1 500 V catenary system with a dedicated negative special return rail for traction power supply. Two power supply schemes are designed for the tunnel section crossing Yangtze River, and simulation calculations for indicators of both schemes are performed, evaluating the minimum voltage of the traction network, rectifier unit power, and the effective current of the traction substation when the power supply system capacity reaches 24 pairs per hour. A comparative analysis is conducted. [Result & Conclusion] The use of a special negative return rail in the DC traction power supply system fundamentally eliminates the generation of stray currents and their corrosion impact on surrounding pipelines. Compared to the ′dual-set configuration′ scheme for traction DC equipment, In the scheme with a traction substation set up in the long-distance section crossing the Yangtze River, exhibits advantages in power supply reliability and capacity.
Authors and Affiliations
Xiaofeng WANG
Keywords
Related Articles
- EP ID EP727700
- DOI 10.16037/j.1007-869x.2024.01.017
- Views 16
- Downloads 0
Optimization of Train Operation Organization during Metro Catenary Collapse
[Objective] In the event of a collapsed non-redundant rigid catenary, it is essential to adjust train operation organization according to different collapse scenarios, minimizing the impact of the incident and reducing p...
Research on New Cutting-type Anti-climbers for Urban Rail Transit Vehicles
[Objective] Currently, the CAC (cutting-type anti-climber) faces the issue of excessively high initial peak cutting force, leading to cutting tool detachment or fracture and finally the anti-climber failure. Moreover, th...
Cause Analysis and Improvement Measures for Maglev Train Brake Release Failure in Beijing Subway Line S1
Objective The maglev train of Beijing Subway Line S1 had a brake release failure during operation, impacting line normal operation. Therefore, it is necessary to find out the exact cause of the fault and put forward impr...
Automatic Train Operation System Based on Vehicle Deep Integration
Objective Conventional ATO (automatic train operation) systems lack a direct, real-time, and bidirectional data exchange with the vehicle traction/braking systems. In the vehicle control process, information on the vehic...
Shear and Seismic Performance Analysis of New Component Connection Schemes for Urban Rail Transit Prefabricated Underground Stations
Objective To further promote the application of underground prefabricated structures in urban rail transit projects, research on key technologies (especially new component connection schemes) is conducted for the entry/e...