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Research on Dedicated Rail Return Current Schemes Based on Contact Rail Power Supply Traction Systems
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Jianjun SUN1, Chunyang XING1, Huifeng LAN1, Guoyu LI1, Chuanhui LI2, Qilai HUANG2
Urban Rapid Rail Transit | 2025, 38(1) : 142 - 148
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Urban Rapid Rail Transit | 2025, 38(1): 142-148
• Electrical and Mechanical Engineering •
Research on Dedicated Rail Return Current Schemes Based on Contact Rail Power Supply Traction Systems
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Jianjun SUN1, Chunyang XING1, Huifeng LAN1, Guoyu LI1, Chuanhui LI2, Qilai HUANG2
Affiliations
  • 1 Qingdao Metro Group Co., Ltd. Qingdao 266045
  • 2 Beijing Urban Construction Design & Development Group Co., Ltd. Beijing 100037
doi: 10.3969/j.issn.1672-6073.2025.01.019
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The urban rail transit projects in China have adopted overhead contact system power supply and dedicated rail return current scheme to solve the problem of stray current leakage. However, there are currently no applications of dedicated rail return under contact rail power supply systems in China. This article proposes four dedicated rail return current schemes based on the contact rail power supply systems. It analyzes and evaluates these four schemes through quantitative and qualitative methods, considering aspects such as equipment impact, vehicle current return, networked operation of lines, power supply system protection, safety, and costeffectiveness. It discusses the feasibility, advantages, and disadvantages of each scheme, and ultimately recommends a dedicated rail return scheme based on the contact rail power supply system. Finally, it proposes a recommended dedicated rail return scheme based on the contact rail power supply system, and summarizes the impact of dedicated rail return on other disciplines.

urban rail transit  /  contact rail  /  dedicated rail return current  /  reflux scheme  /  comprehensive evaluation
Jianjun SUN, Chunyang XING, Huifeng LAN, Guoyu LI, Chuanhui LI, Qilai HUANG. Research on Dedicated Rail Return Current Schemes Based on Contact Rail Power Supply Traction Systems[J]. Urban Rapid Rail Transit, 2025 , 38 (1) : 142 -148 . DOI: 10.3969/j.issn.1672-6073.2025.01.019
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Year 2025 volume 38 Issue 1
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Article Info
doi: 10.3969/j.issn.1672-6073.2025.01.019
  • Receive Date：2024-03-12
  • Online Date：2025-07-09
Article Data
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History
  • Received：2024-03-12
  • Revised：2024-06-05
Funding
Affiliations
    1 Qingdao Metro Group Co., Ltd. Qingdao 266045
    2 Beijing Urban Construction Design & Development Group Co., Ltd. Beijing 100037
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