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

Author

Yang, C.-F. ; Hwang, J.-T. ; Lee, T.-H. ; Yang, J.-S. ; Lin, C.-T.

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Inst. of Technol., Taipei, Taiwan

Volume

143

Issue

3

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

290

Lastpage

294

Abstract

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 package 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

Keywords

earthing; power overhead lines; power system analysis computing; power system protection; power system relaying; relay protection; software packages; substations; transmission networks; 161 kV; 2100 MVA; 69 kV; EMTP package; computer simulation; false responses; ground potential rise; magnetic field induced voltage; pilot wire relay systems; power systems; substation;

fLanguage

English

Journal_Title

Generation, Transmission and Distribution, IEE Proceedings-

Publisher

iet

ISSN

1350-2360

Type

jour

DOI

10.1049/ip-gtd:19960293

Filename

502156