A fuzzy-set approach to fault-type identification in digital relaying

Author

Ferrero, Alessandro ; Sangiovanni, Silvia ; Zappitelli, Ennio

Author_Institution

Dipartimento di Elettrotecnica, Politecnico di Milano, Italy

Volume

10

Issue

1

fYear

1995

fDate

1/1/1995 12:00:00 AM

Firstpage

169

Lastpage

175

Abstract

Sometime the operations that a relay is required to perform cannot be easily described in a deterministic way. A significant example of this situation is given by the operations a line relay must perform in order to detect the type of fault (line-to-ground, line-to-line, line-to-line involving ground). Recently, the mathematical theory of fuzzy sets featured many practical applications, mainly in industrial controls, and fuzzy-set processors are available to allow real time applications. This paper shows that a fuzzy-set approach can be useful even in digital relaying, whenever “fuzzy” decisions have to be under-taken. A possible application to the detection of the type of fault when symmetrical component relaying techniques are adopted is proposed and the results of simulation tests are given

Keywords

digital simulation; fault location; fuzzy set theory; power system analysis computing; power system control; power system protection; power system relaying; digital power system relaying; fault-type identification; fuzzy sets; line-to-ground faults; line-to-line faults; real time; simulation; symmetrical component relaying techniques; Circuit faults; Digital relays; Fault currents; Fault detection; Fault diagnosis; Fuzzy sets; Mathematical model; Protection; Protective relaying; Testing;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.368401

Filename

368401