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《Advanced Technology of Electrical Engineering and Energy》 2009-02
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Application of computer graphics to detection of transformer winding deformation with FR data

XU Yuan,LIU You-wei,BI Jian-gang(High Voltage Department,China Electric Power Research Institute,Beijing 100192,China)  
To improve the effect in detection of the transformer winding deformation with FRA,based on the feature of FRA,mathematical morphology is used. The FR data are expressed with image. The key block is got after treatment with mathematical morphology method. Frequency band and morphology parameters of key block are defined. The difference between FR data can be expressed by them. The criterion of the method is given. The state of the transformer winding can be detected using the numbers and the morphology parameters of the key block. An example is given in the paper. For testing the effect of the method,the correlation coefficient method is compared with some cases. The method provides a new way to analyze the transformer winding deformation with FRA.
【CateGory Index】: TM406
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