The Identification Method of the Winding Vibration Faults of Dry-Type Transformers

To identify the four typical faults of dry-type transformer winding insulations, looseness, deformation and eccentricity, this study establishes electric magnetic force multi-physical field simulation model a under with COMSOL software, based on vibration mechanism an SCB10-1000/10 transformer. Through coupling calculation, comparative relationship between acceleration kinds normal working state is obtained. The results show that amplitude growth rate fundamental frequency or harmonic signal different from conditions. Therefore, threshold value increment introduced to describe relative Finally, are identified ranges faults, laying foundation for fault diagnosis vibrations.