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http://dx.doi.org/10.3795/KSME-A.2015.39.6.625

Prognostics for Stator Windings of Water-Cooled Generator Against Water Absorption  

Jang, Beom Chan (Dept. of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Youn, Byeng D. (Dept. of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
Kim, Hee Soo (Korea Electric Power Research Institute)
Bae, Yong Chae (Korea Electric Power Research Institute)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.39, no.6, 2015 , pp. 625-629 More about this Journal
Abstract
In this study, we develop a prognostic method of assessing the stator windings of power generators against water absorption through statistical data analysis and degradation modeling. The 42 windings of the generator are divided into two groups: the absorption and normal groups. A degradation model of a winding is constructed using Fick's second law to predict the level of absorption. By analyzing data from the normal group, we can determine the distribution of the data of normal windings. The health index of a winding is estimated using the directional Mahalanobis distance (DMD) method. Finally, the probability distributions of the failure time of the windings are determined.
Keywords
Prognostics; Power Generator; Water Absorption;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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