Optimal coordination of directional overcurrent relays considering definite time backup relaying

Author

Pérez, Luis G. ; Urdaneta, Alberto J.

Author_Institution

Univ. Simon Bolivar, Caracas, Venezuela

Volume

14

Issue

4

fYear

1999

fDate

10/1/1999 12:00:00 AM

Firstpage

1276

Lastpage

1284

Abstract

A methodology is presented for the consideration of definite-time backup relays in the optimal coordination of directional overcurrent relays using linear programming. It is shown that the influence of considering second-zone distance relays and breaker failure relays impose important requirements for the determination of the time dial settings of directional overcurrent relays. The paper introduces a revised formulation of the optimization problem. Results are presented for the application of the methodology on a power system with 2 generators, 9 buses, 2 transformers and 7 transmission lines

Keywords

linear programming; overcurrent protection; power system protection; relay protection; breaker failure relays; computer aided relay coordination; definite time backup relaying; directional overcurrent relays coordination; linear programming; power system protection; second-zone distance relays; Application software; Equations; Linear programming; Power generation; Power system protection; Power system relaying; Protective relaying; Relays; Topology; Transformers;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.796218

Filename

796218