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Volume 9
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10.3390/electronics9040613
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Article

The Research on DC Loop of Regional Power Grid Caused by the Operation of the Subway

by
Lin Du
1,*,
Sha Chang
1 and
Shiying Wang
1,2
1
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
2
State Grid Chengdu Electric Power Supply Company, Chengdu 61004, China
*
Author to whom correspondence should be addressed.
Electronics 2020, 9(4), 613; https://doi.org/10.3390/electronics9040613
Submission received: 20 February 2020 / Revised: 27 March 2020 / Accepted: 31 March 2020 / Published: 4 April 2020
(This article belongs to the Section Power Electronics)
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Abstract

The operation of the subway would change the distribution of the ground potential along the rail, forming a DC loop through the grounding points in a nearby regional power grid and threatening the operational safety of the power system. In this paper, a new DC potential distribution calculation method along the subway is firstly proposed. Secondly, a grid grounding DC loop model is built on the foundation of the stray current principle. Thirdly, factors affecting the current in the grid are also presented and discussed based on the grounding loop model. Finally, a subway operation simulation platform is set up in a laboratory to simulate the operation of subway in situation, and the rationality of the model presented in this paper has been effectively verified.
Keywords: rail; stray current; grounding loop model; simulation; DC intrusion rail; stray current; grounding loop model; simulation; DC intrusion

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MDPI and ACS Style

Du, L.; Chang, S.; Wang, S. The Research on DC Loop of Regional Power Grid Caused by the Operation of the Subway. Electronics 2020, 9, 613. https://doi.org/10.3390/electronics9040613

AMA Style

Du L, Chang S, Wang S. The Research on DC Loop of Regional Power Grid Caused by the Operation of the Subway. Electronics. 2020; 9(4):613. https://doi.org/10.3390/electronics9040613

Chicago/Turabian Style

Du, Lin, Sha Chang, and Shiying Wang. 2020. "The Research on DC Loop of Regional Power Grid Caused by the Operation of the Subway" Electronics 9, no. 4: 613. https://doi.org/10.3390/electronics9040613

APA Style

Du, L., Chang, S., & Wang, S. (2020). The Research on DC Loop of Regional Power Grid Caused by the Operation of the Subway. Electronics, 9(4), 613. https://doi.org/10.3390/electronics9040613

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