Segmental Power Supply Scheme and Fault Identification Method for Urban Rail Transit Traction Network in Continuous Co-phase Power Supply Mode
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 9
Abstract
Objective When urban rail transit line adopts the continuous co-phase power supply mode, a fault in the traction network may cause extended power outage due to the complexity and non-backup structure of the traction network. Therefore, it is necessary to optimize the segmental power supply scheme for the traction network. Method A segmental power supply scheme for the traction network applicable to the continuous co-phase power supply mode is proposed. Based on the topological characteristics of the segmental power supply of traction network, and combined with the coupling characteristics of vehicle-traction network, the identification methods of segmental short-circuit and neutral section short-circuit are proposed. The control schemes for these two fault scenarios are analyzed, and the self-healing process of the traction network under the above two fault scenarios is described, corresponding circuit breaker control schemes are formulated. In the case study of Guangzhou Metro Line 18, the correctness and reliability of the proposed segmental power supply scheme and the fault identification methods are verified by MATLAB/Simulink software simulation. Result & Conclusion The proposed method can effectively identify faulty segments. The circuit breaker control scheme for the traction network fault can provide reliable main protection for the segments and neutral sections, ensuring stable and efficient operation of the traction power supply system of Guangzhou Metro Line 18.
Authors and Affiliations
Feng HOU, Shuai WANG, Zhixin HE, Dong YI, Zhongrui SUN
Keywords
Related Articles
- EP ID EP744316
- DOI 10.16037/j.1007-869x.2024.09.008
- Views 36
- Downloads 0
Deformation and Crack Propagation Characteristics of Carbon Fiber Reinforced Concrete Shield Segments Based on Particle Discrete Element
Objective The Xiaozhuang Station-Wanshou Station interval shield tunnel is located in a highly fractured rock layer with developed groundwater, facing extremely complex geological conditions and requiring relatively high...
Analysis of Metro Flood Incidents During Operation and Suggestions for Emergency Management Informatization
Objective Once the metro flood incident occurs during operation, mild cases will cause train delay and even train suspension, while severe cases can result in property loss and worse, personal injury. Therefore, it is ne...
High-speed Maglev Digitization and Intelligentization Top-level Design
Objective Digitization and intelligence (D&I) is essential for rail transit high-quality development. Currently, there is a lack of top-level design for high-speed maglev D&I, necessitating research to meet the requireme...
Flood Control Design and Monitoring Schemes for Urban Rail Transit Vehicle Base
[Objective] Flood control in urban rail transit vehicle base affects its safety and the main line operation. To effectively improve the flood control capacity of the vehicle base, it is necessary to study the key points...
Thinking and Practice of Urban Rail Transit Safety Resilience
Objective As an important transportation infrastructure, urban rail transit is crucial to ensure safe and orderly operation of the city. In order to cope with the safety challenge faced by urban rail transit system, it i...