INTERNAL DEFECT MEASURING DEVICE OF A TRANSFORMER CAPABLE OF ACCURATELY DETECTING THE LOCATION OF A DEFECT

摘要

PURPOSE: An internal defect measuring device of a transformer is provided to accurately detect a defect by including a piezoelectric element capable of measuring an electric signal and an acoustic signal at the same time.;CONSTITUTION: A housing(110) constitutes a transformer. A main sensor unit(120) is attached to the outer side of the housing. The main sensor unit measures an acoustic signal and the change of potential and analyzes a signal. A sub sensor unit(130) is attached to the outer side of the housing. The sub sensor unit detects the acoustic signal and supplies it to the main sensor unit when a partial discharge is generated. A piezoelectric element detects an electric signal and the acoustic signal at the same time when the partial discharge is generated within the transformer. The piezoelectric element is attached to a ware plate of the housing. An amplification circuit amplifies the electric signal and the acoustic signal detected by the piezoelectric element.;COPYRIGHT KIPO 2012