Propagation Characteristics of Impulse Creepage Discharge in Parallel Plane Gap with Protruding Point in Transformer Oil

摘要

The propagation characteristics of the creepage discharge in parallel plane electrode gap with protruding point in trans- former oil are observed and investigated in detail under an impulse voltage application, by using a high-speed Schlieren optical technique and a current measurement system by LED. The streamer-like density changes appeared from the protruding point tip of one high voltage plane electrode and propa- Gated to other earthed plane electrode.