Relay protection operation for faults on Nyseg´s six-phase transmission line

Author

Apostolov, Alexander P. ; Raffensperger, Roblert G.

Author_Institution

Div. of Integrated Syst., Rochester Univ., NY, USA

Volume

11

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

191

Lastpage

196

Abstract

This paper describes the performance of the protection system used for the first commercially operated six-phase transmission line in the world-New York State Electric & Gas´s 93 kV (phase to phase and phase to ground) line from Goudey Station to Oakdale substation (USA) during faults in the winter of 1993. The paper briefly describes the basics of the High-Phase Order Transmission Demonstration Project and the integration of available state of the art microprocessor based relays, with a programmable logic relay (designed for the protection of conventional three-phase systems) in a hierarchical six-phase protection system. The operation of the protection system during two faults on the line in January and February 1993 is reported. The modeling of the six-phase line in a conventional three-phase short circuit study program is also considered and a comparison between the measured and calculated fault currents is presented

Keywords

fault currents; microcomputer applications; power system control; power system protection; power system relaying; power transmission lines; project engineering; relay protection; 93 kV; USA; demonstration project; fault current; microprocessors; modeling; programmable logic relay; relay protection operation; six-phase transmission line; state of the art; substation; three-phase short-circuits; Circuit faults; Current measurement; Fault currents; Logic design; Microprocessors; Programmable logic arrays; Programmable logic devices; Protective relaying; Substation protection; Transmission lines;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.484016

Filename

484016