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Memorias de investigación
Communications at congresses:
New On-Line Excitation-System Ground Fault Location Method Tested in a 106 MVA Synchronous Generator
Year:2014
Research Areas
  • Electric engineering
Information
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.
International
Si
Congress
Electrical Machines (ICEM), 2014 International Conference on
960
Place
Berlin
Reviewers
Si
ISBN/ISSN
9781306269322
10.1109/ICELMACH.2014.6960444
Start Date
02/09/2014
End Date
05/09/2014
From page
1908
To page
1914
ICEM
Participants
  • Autor: Francisco Blánquez Delgado (UPM)
  • Autor: Miguel Pardo (Eon)
  • Autor: Carlos Antonio Platero Gaona (UPM)
  • Autor: Emilio David Rebollo Lopez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Generación eléctrica con energía eólica
  • Departamento: Automática, Ingeniería Eléctrica y Electrónica e Informática Industrial
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