Study on spectrum eigenvalues of transformer vibration and its application on winding deformation detecting

摘要

The vibration of power transformer on oil tank is closely related to the mechanical condition of core and windings. This paper through setting winding buckling and bulge on two 10/0.4 kV single-phase transformers and using the vibration eigenvalues in spectrum, such as the amplitude of 100Hz, the proportion of frequency and the complexity of vibration spectrum, deals with the vibration characteristics under winding failure. The conclusion shows that if winding buckling and bulge occurs, amplitude of 100Hz and its proportion will decline and the complexity of vibration spectrum will rise up. The conclusion of this paper can make contributions to the condition monitoring technology of transformer.