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Predictions of Short-Circuit Characteristics of Rotor Windings in a Generator using Electromagnetic Analysis  

Kim, Dong-Hun (경북대학교 전자전기컴퓨터학부)
Song, Myung-Kon (벡터필드코리아(주))
Park, Jung-Shin (위덕대 전기공학부)
Lee, Dong-Young (위덕대 전기공학부)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.55, no.11, 2006 , pp. 572-576 More about this Journal
Abstract
As the increasing of capacity and technology of power facilities, rotating machines such as turbine generators and water turbines are getting higher at capacity but smaller in size. Thus the monitoring and diagnosis of generators for fault detection and protection has attracted intensive interest. Most of electrical faults of rotating machines appear in their windings. In case of an after-fault in high capacity rotating machines, the recovering cost is usually very expensive and additional time is necessary for returning in a normal situation. In this paper, the magnetic flux patterns in air-gap of a generator under various fault states as well as a normal state are simulated by a conventional FEM tool. These results are successfully applied to detection and diagnosis of the short-circuit condition in rotor windings of a high capacity generator.
Keywords
Rotating Machine; Short Circuit; Electric Fault; Rotor Winding; Finite Element Analysis;
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