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Effects of magnetic field induction and ground potential rise on pilot wire relay system operations

Effects of magnetic field induction and ground potential rise on pilot wire relay system operations

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  • Author(s): C.-F. Yang 1 ; J.-T. Hwang 1 ; T.-H. Lee 2 ; J.-S. Yang 3 ; C.-T. Lin 4
    • View affiliations
    • Affiliations: 1: Department of Electrical Engineering, National Taiwan Institute of Technology, Taipei, Republic of China
      2: Department of Electrical Engineering, University of New Brunswick, Fredericton, Canada
      3: Power Research Institute, Taiwan Power Company, Taipei, Republic of China
      4: Electrical System Department, Taiwan Power Company, Taipei, Republic of China
  • Source: Volume 143, Issue 3, May 1996, p. 290 – 294
    DOI:  10.1049/ip-gtd:19960293 , Print ISSN 1350-2360, Online ISSN 1359-7051
© IEE
Published

In the paper, magnetic field induction and ground potential rise (GPR) problems have been evaluated to investigate false responses of pilot wire relays, causing the blackout of a 2100 MVA 161/69 kV substation in a major Taiwanese electric power utility. Based on available field information, the EMTP was applied to determine the magnetic field induced voltage (MFIV), and a simple model was used for GPR calculations. Those results and an analysis of the false responses are presented. Also, methods for protecting against the MFIV and GPR for the pilot wire relay system are discussed.

Inspec keywords: software packages; earthing; transmission networks; relay protection; substations; power system analysis computing; power overhead lines; power system relaying; power system protection

Other keywords: 69 kV; 161 kV; false responses; substation; magnetic field induced voltage; 2100 MVA; ground potential rise; computer simulation; EMTP package; power systems; pilot wire relay systems

Subjects: Power transmission, distribution and supply; Power system protection; Substations; Overhead power lines

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