Characterization of ferroresonant modes in HV substation with CB grading capacitors

M Val Escudero, I Dudurych, M A Redfern

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

This paper reports a ferroresonant experience involving inductive voltage transformers (VT's) in a 400kV substation equipped with circuit breaker grading capacitors. Field measurements are presented and compared with ATP/EMTP simulation results, showing very good agreement. A parametric analysis has been performed to investigate the effect of the substation capacitance on the occurrence of ferroresonance. Fundamental frequency and sub-harmonic ferroresonant modes have been identified and compiled in a bifurcation diagram. The methodology presented can be used to create risk maps of avoidable switching operations or substation configurations. (C) 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1506-1513
Number of pages8
JournalElectric Power Systems Research
Volume77
Issue number11
Publication statusPublished - 2007

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