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Scheme of long distance power supply for electrified railway traction network based on traction cable
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Hui Wang, Qunzhan Li, Wei Liu, Chuang Wang, Tongtong Liu
Railway Sciences | 2022, 1(1) : 114 - 130
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Railway Sciences | 2022, 1(1): 114-130
• Research paper •
Scheme of long distance power supply for electrified railway traction network based on traction cable
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Hui Wang, Qunzhan Li, Wei Liu, Chuang Wang, Tongtong Liu
Affiliations
  • School of Electrical Engineering, Southwest Jiaotong University, Chengdu, China
Published: 2022-05-10 doi: 10.1108/RS-04-2022-0011
Outline
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Purpose

The traction cable is paralleled with the existing traction network of electrified railway through transverse connecting line to form the scheme of long distance power supply for the traction network. This paper aims to study the scheme composition and power supply distance (PSD) of the scheme.

Design/methodology/approach

Based on the structure of parallel traction network (referred to as "cable traction network (CTN)"), the power supply modes (PSMs) are divided into cable + direct PSM and cable + autotransformer (AT) PSM (including Japanese mode, French mode and new mode). Taking cable + Japanese AT PSM as an example, the scheme of long distance power supply for CTN under the PSMs of co-phase and out-of-phase power supply are designed. On the basis of establishing the equivalent circuit model and the chain circuit model of CTN, taking the train working voltage as the constraint condition, and based on the power flow calculation of multiple train loads, the calculation formula and process for determining the PSD of CTN are given. The impedance and PSD of CTN under the cable + AT PSM are simulated and analyzed, and a certain line is taken as an example to compare the scheme design.

Findings

Results show that the equivalent impedance of CTN under the cable + AT PSM is smaller, and the PSD is about 2.5 times of that under the AT PSM, which can effectively increase the PSD and the flexibility of external power supply location.

Originality/value

The research content can effectively improve the PSD of traction power supply system and has important reference value for the engineering application of the scheme.

Traction cable  /  Electrified railway  /  Traction network  /  Long distance power supply  /  Voltage drop  /  Power flow calculation
Hui Wang, Qunzhan Li, Wei Liu, Chuang Wang, Tongtong Liu. Scheme of long distance power supply for electrified railway traction network based on traction cable[J]. Railway Sciences, 2022 , 1 (1) : 114 -130 . DOI: 10.1108/RS-04-2022-0011
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Funding
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  • Youth Science Foundation Fund Project of National Natural Science Foundation of China(51607148)
  • Science and Technology R&D Program of China State Railway Group Co., Ltd.(SY2020G001)
  • Project of Sichuan Science and Technology Program(2021YJ0028)
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Year 2022 volume 1 Issue 1
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Article Info
doi: 10.1108/RS-04-2022-0011
  • Receive Date：2022-04-12
  • Online Date：2026-06-11
  • Published：2022-05-10
Article Data
Affiliations
History
  • Received：2022-04-12
  • Revised：2022-04-13
  • Accepted：2022-04-13
Funding
Youth Science Foundation Fund Project of National Natural Science Foundation of China(51607148)
Science and Technology R&D Program of China State Railway Group Co., Ltd.(SY2020G001)
Project of Sichuan Science and Technology Program(2021YJ0028)
Affiliations
    School of Electrical Engineering, Southwest Jiaotong University, Chengdu, China

Corresponding:

Hui Wang can be contacted at:
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红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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