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

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

Description

Title: New On-Line Excitation-System Ground Fault Location Method Tested in a 106 MVA Synchronous Generator
Author/s:
  • Blánquez Delgado, Francisco
  • Pardo, Miguel
  • Platero Gaona, Carlos Antonio
  • Rebollo López, Emilio
  • Blázquez García, Francisco
Item Type: Presentation at Congress or Conference (Article)
Event Title: 2014 International Conference on Electrical Machines (ICEM)
Event Dates: 02 - 05 September 2014
Event Location: Berlin, Germany
Title of Book: Proceedings 2014 International Conference on Electrical Machines (ICEM)
Date: 2014
ISBN: 978-1-4799-4389-0
Subjects:
Freetext Keywords: Fault Location, Power system protection, Hydroelectric power generation, Generators, Rotors.
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

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (3MB) | Preview

Abstract

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.

More information

Item ID: 36306
DC Identifier: http://oa.upm.es/36306/
OAI Identifier: oai:oa.upm.es:36306
Official URL: http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6945619
Deposited by: Memoria Investigacion
Deposited on: 02 Jul 2015 17:38
Last Modified: 02 Jul 2015 17:38
  • 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