Analysis of partial discharge phenomena by discharge magnitude and discharge luminescence in each phase angle

This research was carried out to analyze the treeing phenomena from a needle shape void by discharge pulses and a discharge luminescence in each phase angle area. The discharge pulse and the discharge luminescence were measured by a special measuring system to analyze a discharge magnitude and a discharge luminous intensity image according to several phase angle areas of applied voltage. In particular, in this study, we focused on the discharge luminescence in each phase angle area. The luminous image was recorded on a CCD camera, and the image was digitized by a computer after the experiment