Stand alone intelligent digital distance relay

Author

Li, K.K. ; Lai, L.L. ; David, A.K.

Author_Institution

Hong Kong Polytech. Univ., China

Volume

15

Issue

1

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

137

Lastpage

142

Abstract

Remote end infeed causes problems in distance relay especially under high resistance earth fault conditions. Although a distance relay set to an ideal operating region can cover the fault resistance at one particular load condition, the operating region is affected by changes in load condition. Hence a distance relay may overreach or underreach when load changes. From the main factors which affect the ideal digital distance relay operating region, a stand alone intelligent digital distance relay which can adapt to these changes is presented. This approach does not need communication links from the remote end of the line or the system control center. Numerous computer simulations have been carried out on realistic system configurations and the results show that there is a high potential for developing an intelligent digital distance relay

Keywords

neural nets; power engineering computing; power system faults; power system protection; relay protection; adaptive digital relaying; artificial intelligence; computer simulations; distance relay overreach; distance relay underreach; fault resistance; high resistance earth fault conditions; ideal operating region; intelligent digital distance relay; neural networks; remote end infeed; stand alone intelligent digital distance relay; system control center; Artificial intelligence; Circuit faults; Digital relays; Impedance; Integrated circuit interconnections; Power system interconnection; Power system relaying; Power system simulation; Protection; Protective relaying;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.852112

Filename

852112