Influencing Factors on Deformation Diagnosis of Transformer Windings

Frequency response method is widely applied to diagnosis of transformer winding deformation.However,measurement distortion will take place because of many influencing factors,which may decrease the comparability of measurement results,and thus make analysis and judgement of the results difficult or even false.To accurately identify the influencing factors,we sum up and classify different abnormal curves of windings' frequency response due to different influencing factors according to the application of frequency response detection technology in Tianshui grid.This study is expected to provide evidence for deformation judgement of transformer windings.