Title :
Transformer modeling as applied to differential protection
Author :
Guzmán, Armando ; Hou, Daqing ; Zocholl, Stanley E.
Author_Institution :
Schweitzer Eng. Labs. Inc., Pullman, WA, USA
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;
Conference_Titel :
Electrical and Computer Engineering, 1996. Canadian Conference on
Conference_Location :
Calgary, Alta.
Print_ISBN :
0-7803-3143-5
DOI :
10.1109/CCECE.1996.548050
