A laboratory investigation of a digital protection technique for parallel transmission lines

Author

Gilany, M.I. ; Malik, O.P. ; Hope, G.S.

Author_Institution

Dept. of Electr. Eng., Cairo Univ., Giza, Egypt

Volume

10

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

187

Lastpage

193

Abstract

A digital algorithm for the protection of parallel power transmission lines has been implemented on a 16-bit single board computer. It has been tested on a physical model consisting of two synchronous machines connected through a double circuit line. The algorithm is based on comparing magnitudes of currents of two parallel lines. Details of the experimental set-up and the results of online tests for various operating conditions are presented. A procedure to adjust the relay settings adaptively is also incorporated. The results illustrate the successful operation of the algorithm in detecting faults on parallel lines

Keywords

microcomputer applications; power system control; power system protection; power system relaying; power transmission lines; real-time systems; 16 bit; algorithm; digital protection; laboratory; online tests; parallel power transmission lines; power systems; relay settings; single board computer; synchronous machines; Circuit faults; Circuit testing; Concurrent computing; Digital relays; Fault detection; Laboratories; Phase detection; Power system relaying; Protection; Transmission lines;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.368399

Filename

368399