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

Serrano, Jesús; Platero Gaona, Carlos Antonio; López-Toledo, Máximo y Granizo Arrabe, Ricardo (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.

Descripción

Título: A Novel Ground Fault Identification Method for 2 x 5 kV Railway Power Supply Systems
Autor/es:
  • Serrano, Jesús
  • Platero Gaona, Carlos Antonio
  • López-Toledo, Máximo
  • Granizo Arrabe, Ricardo
Tipo de Documento: Artículo
Título de Revista/Publicación: energies
Fecha: 13 Julio 2015
Volumen: 8
Materias:
Palabras Clave Informales: ground faults; protection; 2 × 25 kV; fault location; railways
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 40756
Identificador DC: http://oa.upm.es/40756/
Identificador OAI: oai:oa.upm.es:40756
Identificador DOI: 10.3390/en8077020
URL Oficial: http://www.mdpi.com/1996-1073/8/7/7020
Depositado por: Memoria Investigacion
Depositado el: 06 Jun 2016 09:25
Ultima Modificación: 06 Jun 2016 09:25
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