Investigation of midpoint STATCOM effects on synchronous generator loss of field protection

Abbas Hasani, Farhad Haghjoo, Claus Leth Bak, Filipe Miguel Faria da Silva

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review


This paper investigates the impacts of midpoint static synchronous compensator (STATCOM) on the conventional loss of field (LOF) protection of synchronous generator. Simulation studies are conducted by using the phase domain generator model available in the real-time-digital-simulator (RTDS). A realistic field circuit model is considered for the generator, which allows simulating different LOF failures in order to have a more accurate study. Obtained results show that the conventional LOF relay needs more time to detect LOF failures in presence of midpoint STATCOM. The amount of this time delay depends on the generator initial loading and the type of LOF failure.
Original languageEnglish
Title of host publicationProceedings of CIGRE Symposium Aalborg 2019
Number of pages10
PublisherCIGRE (International Council on Large Electric Systems)
Publication dateJun 2019
Article number97
Publication statusPublished - Jun 2019
EventCIGRE Symposium Aalborg 2019 - Aalborg, Denmark
Duration: 4 Jun 20197 Jun 2019


ConferenceCIGRE Symposium Aalborg 2019


  • Synchronous generator protection
  • Loss of field
  • Real-time-digital-simulator


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