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Healthy Assessment of Generator Stator Cores using EL-CID (ELectromagnetic Core Imperfection Detector)  

Kim, Byeong-Rae (한전 전력연구원)
Kim, Hee-Dong (한전 전력연구원)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.58, no.2, 2009 , pp. 356-362 More about this Journal
Abstract
The ELectromagnetic Core Imperfection Detector (EL-CID) test was performed on a small generator in the laboratory and a gas turbine generator in the field to assess the fault condition of generator stator core. Artificial defects with six different sizes were introduced in the small generator. The scan results on six defects show a very large increase in the magnitude of fault current compared to that obtained with a healthy core. After the stator core heats up, a thermal imaging camera was used to detect hot spot on the inner surface of the core for comparison. Several faults were found during inspection of the gas turbine generator with the EL-CID. It has been shown that the existence of a fault can be determined by monitoring the magnitude of fault current.
Keywords
Generator; EL-CID; Stator Core; Artificial Defect; Fault Current;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
Times Cited By SCOPUS : 0
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