New algorithm for protection of capacitor banks exposed to harmonic overvoltages

Author

Benmouyal, Gabriel ; Bilodeau, Hubert ; Chano, Simon ; Sybille, Gilbert

Author_Institution

Hydro-Quebec, Montreal, Que., Canada

Volume

8

Issue

3

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

898

Lastpage

904

Abstract

Conventional relays based on voltage peak detection exhibit serious shortcomings with respect to capacitor banks overvoltage protection. A harmonic simulation case study is presented, the purpose of which is to evaluate the performance of capacitor overvoltage relays in a static VAr compensator (SVC) installation. The concept of a computer-based digital relay, designed to reduce the overprotection trend found in conventional relays, is introduced. The major concern is to properly evaluate the time stresses applied on the capacitor according to the NEMA (ANSI/IEEE) standard.<>

Keywords

overvoltage protection; power capacitors; power system analysis computing; power system computer control; power system harmonics; power system protection; relay protection; standards; static VAr compensators; ANSI/IEEE; NEMA; SVC; algorithm; capacitor banks; digital control; harmonic overvoltages; overvoltage relays; performance; power capacitors; power system protection; simulation; standard; static VAr compensator; time stresses;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.252616

Filename

252616