Reliable busbar protection with advanced zone selection

Author

Guzmán, Armando ; Qin, Bai-Lin ; Labuschagne, Casper

Author_Institution

Schweitzer Eng. Labs. Inc., Pullman, WA, USA

Volume

20

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

625

Lastpage

629

Abstract

Modern digital relays use innovative algorithms to fulfill busbar protection requirements of fast operating times for all busbar faults, security for external faults with heavy current-transformer (CT) saturation, and minimum delay for evolving faults. This paper describes a reliable protection system that includes busbar protection and advanced zone selection; the protection system is suitable for the protection of multiple busbar arrangements. The protection system consists of several protection principles and measuring techniques using instantaneous and phasor quantities in a unique combination to achieve reliable busbar protection with minimum CT performance requirements.

Keywords

busbars; current transformers; electrical faults; relay protection; reliability; advance zone selection; busbar fault; busbar protection; current transformer saturation; digital relay; Circuit faults; Current transformers; Delay; Digital relays; Fault currents; Fault detection; Power system protection; Protective relaying; Security; Voltage; Busbar; current-transformer (CT) saturation; differential; directional; fault detection; zone selection;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2004.834671

Filename

1413295