Charge comparison protection of transmission lines-relaying concepts

Author

Ernst, Leonard J. ; Hinman, Walter L. ; Quam, David H. ; Thorp, James S.

Author_Institution

Dowty Control Technologies, Boonton, NJ, USA

Volume

7

Issue

4

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

1834

Lastpage

1852

Abstract

The authors describe the relaying concepts of charge comparison. Charge comparison is a new transmission line protection system. It is a form of current differential relaying. Charge comparison largely resolves the traditional problems of current differential relaying of transmission lines, which are that protection is lost if a channel fails, a large channel capacity is required, and precise channel delay compensation is required. This technique is suitable for the protection of two- or three-terminal AC transmission lines, of all lengths and voltage levels, with or without series of shunt compensation, with three-hole or single-pole tripping

Keywords

power system protection; power transmission lines; relay protection; channel delay compensation; charge comparison protection; current differential relaying; relaying; shunt compensation; single-pole tripping; three-pole tripping; three-terminal AC transmission lines; transmission lines; two-terminal lines; Channel capacity; Control systems; Delay; Digital relays; Power system protection; Power system relaying; Power transmission lines; Protective relaying; Voltage transformers; Writing;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.156986

Filename

156986