Evaluation of the Effect of Stray Current Collection System in DC-Electrified Railway System

Stray current corrosion damage is significant in DC traction power supply system (DTS). Stray current collection system including stray current collection network (SCCN) and stray current drainage device (SCDD) is designed to control the stray current. A comprehensive system integrated calculation m...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2021-07, Vol.70 (7), p.6542-6553
Main Authors: Liu, Wei, Li, Tian, Jie, Zheng, Weiguo, Pan, Yichen, Yin
Format: Article
Language:English
Subjects:
Algorithms
Analytical models
Corrosion
Current collection
Current distribution
DC traction power supply system
Direct current
Earth
Grounding
Integrated circuit modeling
Iterative methods
Power flow
Rails
Railways
Resistance
stray current
stray current collection network
Stray current corrosion
stray current drainage device
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Summary:Stray current corrosion damage is significant in DC traction power supply system (DTS). Stray current collection system including stray current collection network (SCCN) and stray current drainage device (SCDD) is designed to control the stray current. A comprehensive system integrated calculation model is established to evaluate the stray current. And the iterative power flow algorithm with simplification of DTS is proposed. The stray current distribution is calculated by multi sections rail reflux system model. The model is verified with CDEGS simulation. The influence of stray current collection system on stray current is evaluated. The result shows that the primary stray current is mainly affected by rail to SCCN resistance and the length of the line. The efficiency of collecting stray current of SCCN is mainly affected by the resistance of SCCN and the SCCN to earth resistance. While the use of SCDD deteriorates the efficiency of collecting stray current of SCCN. A site test was carried out in Chengdu Metro Line 1 to evaluate the effect of stray current collection system.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2021.3084340