Research Situation Analysis of On-line Detection Technology for Power Transformer Winding Deformation

摘要

Background: Winding deformation is one of the most common faults in power transformers,which seriously threatens the safe operation of transformers. In order to discover the hiddentrouble of transformer in time, it is of great significance to actively carry out the research oftransformer winding deformation detection technology.Methods: In this paper, several methods of winding deformation detection with on-line detectionprospects are summarized. The principles and characteristics of each method are analyzed, and theadvantages and disadvantages of each method as well as the future research directions are expounded.Finally, aiming at the existing problems, the development direction of detection methodfor winding deformation in the future is prospected.Results: The on-line frequency response analysis method is still immature, and the vibration detectionmethod is still in the theoretical research stage.Conclusion: The ΔV ? I1 locus method provides a new direction for on-line detection of transformerwinding deformation faults, which has certain application prospects and practical engineeringvalue.