The research on transformer vibration model in winding insulation weakening fault diagnosis

Dr. Wang Hongfang from EPRI study the viscoelastic nonlinear mechanical properties of the insulation pad of windings, propose the mathematical model of the nonlinear vibration of the axial winding, study the dynamic characteristics of the winding axial vibration under short-circuit conditions, analysis the influence on the winding axial stability caused by axial preload and other factors [3][4].