A Novel Ground Fault Identification Method for 2 x 5 kV Railway Power Supply Systems

Serrano, Jesús, Platero Gaona, Carlos Antonio ORCID: https://orcid.org/0000-0002-7007-2566, López-Toledo, Máximo and Granizo Arrabé, Ricardo ORCID: https://orcid.org/0000-0001-5882-9311 (2015). A Novel Ground Fault Identification Method for 2 x 5 kV Railway Power Supply Systems. "energies", v. 8 (n. 7); pp. 7020-7039. ISSN 1996-1073. https://doi.org/10.3390/en8077020.

Description

Title: A Novel Ground Fault Identification Method for 2 x 5 kV Railway Power Supply Systems
Author/s:
Item Type: Article
Título de Revista/Publicación: energies
Date: 13 July 2015
ISSN: 1996-1073
Volume: 8
Subjects:
Freetext Keywords: ground faults; protection; 2 × 25 kV; fault location; railways
Faculty: E.T.S.I. Industriales (UPM)
Department: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[thumbnail of INVE_MEM_2015_220142.pdf]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (4MB) | Preview

Abstract

The location of ground faults in railway electric lines in 2 × 5 kV railway power supply systems is a difficult task. In both 1 × 25 kV and transmission power systems it is common practice to use distance protection relays to clear ground faults and localize their positions. However, in the particular case of this 2 × 25 kV system, due to the widespread use of autotransformers, the relation between the distance and the impedance seen by the distance protection relays is not linear and therefore the location is not accurate enough. This paper presents a simple and economical method to identify the subsection between autotransformers and the conductor (catenary or feeder) where the ground fault is happening. This method is based on the comparison of the angle between the current and the voltage of the positive terminal in each autotransformer. Consequently, after the identification of the subsection and the conductor with the ground defect, only the subsection where the ground fault is present will be quickly removed from service, with the minimum effect on rail traffic. This method has been validated through computer simulations and laboratory tests with positive results.

More information

Item ID: 40756
DC Identifier: https://oa.upm.es/40756/
OAI Identifier: oai:oa.upm.es:40756
DOI: 10.3390/en8077020
Official URL: http://www.mdpi.com/1996-1073/8/7/7020
Deposited by: Memoria Investigacion
Deposited on: 06 Jun 2016 09:25
Last Modified: 18 Dec 2018 07:52
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM