Transformer modeling as applied to differential protection

Author

Guzmán, Armando ; Hou, Daqing ; Zocholl, Stanley E.

Author_Institution

Schweitzer Eng. Labs. Inc., Pullman, WA, USA

Volume

1

fYear

1996

fDate

26-29 May 1996

Firstpage

108

Abstract

This paper presents a power transformer model to evaluate differential element performance. The paper analyzes transformer energization, overexcitation, external fault and internal fault conditions with this model. Test results with an actual transformer validate the model. The paper includes a guide for properly selecting current transformers for differential protection applications. Accurate power transformer modeling and proper current transformer selection leads to improved transformer protection

Keywords

current transformers; electrical faults; power transformer protection; power transformer testing; transformer windings; applications; current transformer; differential element performance evaluation; differential protection; energization; external faults; internal faults; overexcitation; power transformer model; selection guidelines; transformer test results; Artificial intelligence; Circuit faults; Current transformers; Inductance; Phase transformers; Power transformers; Protection; Protective relaying; Testing; Transformer cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1996. Canadian Conference on

Conference_Location

Calgary, Alta.

ISSN

0840-7789

Print_ISBN

0-7803-3143-5

Type

conf

DOI

10.1109/CCECE.1996.548050

Filename

548050