New On-Line Excitation-System Ground Fault Location Method Tested in a 106 MVA Synchronous Generator

Blánquez Delgado, Francisco; Pardo, Miguel; Platero Gaona, Carlos Antonio; Rebollo López, Emilio y Blázquez García, Francisco (2014). New On-Line Excitation-System Ground Fault Location Method Tested in a 106 MVA Synchronous Generator. En: "2014 International Conference on Electrical Machines (ICEM)", 02 - 05 September 2014, Berlin, Germany. ISBN 978-1-4799-4389-0. pp. 1908-1914.

Descripción

Título: New On-Line Excitation-System Ground Fault Location Method Tested in a 106 MVA Synchronous Generator
Autor/es:
  • Blánquez Delgado, Francisco
  • Pardo, Miguel
  • Platero Gaona, Carlos Antonio
  • Rebollo López, Emilio
  • Blázquez García, Francisco
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 2014 International Conference on Electrical Machines (ICEM)
Fechas del Evento: 02 - 05 September 2014
Lugar del Evento: Berlin, Germany
Título del Libro: Proceedings 2014 International Conference on Electrical Machines (ICEM)
Fecha: 2014
ISBN: 978-1-4799-4389-0
Materias:
Palabras Clave Informales: Fault Location, Power system protection, Hydroelectric power generation, Generators, Rotors.
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

In this paper, a novel excitation-system ground-fault location method is described and tested in a 106 MVA synchronous machine. In this unit, numerous rotor ground-fault trips took place always about an hour after the synchronization to the network. However, when the field winding insulation was checked after the trips, there was no failure. The data indicated that the faults in the rotor were caused by centrifugal forces and temperature. Unexpectedly, by applying this new method, the failure was located in a cable between the excitation transformer and the automatic voltage regulator. In addition, several intentional ground faults were performed along the field winding with different fault resistance values, in order to test the accuracy of this method to locate defects in rotor windings of large generators. Therefore, this new on-line rotor ground-fault detection algorithm is tested in high-power synchronous generators with satisfactory results.

Más información

ID de Registro: 36306
Identificador DC: http://oa.upm.es/36306/
Identificador OAI: oai:oa.upm.es:36306
URL Oficial: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6945619
Depositado por: Memoria Investigacion
Depositado el: 02 Jul 2015 17:38
Ultima Modificación: 02 Jul 2015 17:38
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