Rapid and Non-destructive Detection of Partial Discharge Based on Holography

Abstract

To detect the partial discharge sensitively and non-destructively, a holographic detection is proposed firstly in this paper. By capturing the light signal emitted during the process of discharge, the discharge can be detected.The interferograms with the light signal emitted by discharge can be collected online. As a result, the partial discharge can be detected non-destructively in real time. The experiments based on an artificially localized discharge source verify that the visible light at any band emitted by partial discharge can be captured. With sensitivity, universality, non destructiveness and rapid speed, the proposed method has reduced the implantation difficulty and has potential to field application and assist other methods conveniently.