Multi-perspective observation of streamer discharge morphology

Abstract

As the initial discharge, streamer is the key to explore the long air gap discharge. At present, the experimental research on streamer discharge focus on observation from a single perspective. In order to understand streamer discharge more accurately, it is necessary to conduct photographic observation from multiple perspectives. For this reason, the dual-camera synchronous observation experiment platform was used in this paper to observe the positive streamer discharge in the rod-plate gap from two perspectives under the conditions of different voltage amplitude and electrode size. The morphological characteristics of the discharge from the two perspectives were basically the same. The length and diameter of the streamer discharge increase with the increase of voltage amplitude and the decrease of the curvature of the electrode. It is found that the length and diameter of the streamer measured in the left view are basically higher than those measured in the right view, reflecting the inaccuracy of the streamer discharge observed in the two-dimensional streamer image.

Keywords

• Streamer discharge
• Long gap discharge
• Morphological characteristics
• Multi-perspective photography