DocumentCode :
1493717
Title :
Finite element analysis of internal winding faults in distribution transformers
Author :
Wang, H. ; Butler, K.L.
Author_Institution :
Power Syst. Autom. Lab., Texas A&M Univ., College Station, TX, USA
Volume :
16
Issue :
3
fYear :
2001
fDate :
7/1/2001 12:00:00 AM
Firstpage :
422
Lastpage :
428
Abstract :
With the appearance of deregulation, distribution transformer predictive maintenance is becoming more important for utilities to prevent forced outages with the consequential costs. To detect and diagnose a transformer internal fault requires a transformer model to simulate these faults. This paper presents finite element analysis of internal winding faults in a distribution transformer. The transformer with a turn-to-earth fault or a turn-to-turn fault is modeled using coupled electromagnetic and structural finite elements. The terminal behaviors of the transformer are studied by an indirect coupling of the finite element method and circuit simulation. The procedure was realized using a commercially available software. The normal case and various faulty cases were simulated and the terminal behaviors of the transformer were studied and compared with field experimental results. The comparison results validate the finite element model to simulate internal faults in a distribution transformer.
Keywords :
electrical faults; finite element analysis; power transformers; transformer windings; coupled electromagnetic/structural finite elements; deregulation; distribution transformers; finite element analysis; forced outages prevention; indirect coupling; internal winding faults; predictive maintenance; terminal behavior; transformer internal fault diagnosis; turn-to-earth fault; turn-to-turn fault; Circuit faults; Circuit simulation; Costs; Coupling circuits; Electromagnetic coupling; Electromagnetic modeling; Fault detection; Finite element methods; Predictive maintenance; Transformers;
fLanguage :
English
Journal_Title :
Power Delivery, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-8977
Type :
jour
DOI :
10.1109/61.924821
Filename :
924821
Link To Document :
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