Evaluation of uncertainties in the back-up protection expert system for a transmission network

Author

Tan, J.C. ; Crossley, P.A. ; Hall, I. ; Farrell, J. ; Gale, P.

Author_Institution

Univ. of Manchester Inst. of Sci. & Technol., UK

Volume

3

fYear

2000

fDate

2000

Firstpage

1338

Abstract

The method described in the paper evaluates the unavoidable uncertainties associated with the tripping decisions generated by a back-up protection expert system (BPES). Two certainty factors including the certainty factor (CF) of a power system component containing a fault and the certainty factor of a protection relay or element maloperating (CFM) are introduced. An example is included and is used to demonstrate how the proposed uncertainty evaluation method was integrated into the BPES and how it is used to evaluate the uncertainties associated with a conclusion derived by the BPES for a fault on the south western part of the UK National Grid System

Keywords

expert systems; power engineering computing; power transmission protection; relay protection; UK National Grid System; back-up protection; certainty factors; expert system; power system component; protection element maloperation; protection relay maloperation; transmission network; tripping decisions; uncertainties evaluation; Circuit faults; Expert systems; Integrated circuit interconnections; Intelligent networks; Power system faults; Power system protection; Power system relaying; Protective relaying; Substation protection; Uncertainty;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society Summer Meeting, 2000. IEEE

Conference_Location

Seattle, WA

Print_ISBN

0-7803-6420-1

Type

conf

DOI

10.1109/PESS.2000.868718

Filename

868718