Study on the mechanism and influencing factors of SF6 decomposition products

The decomposition products of GIS basin insulators have characteristic components under four conditions: different defects of GIS basin insulators, cracks and surface discharge of insulation parts inside GIS, abnormal heating of silicon packing basin insulators under steady state current, and particulate discharge of insulation parts. The characteristic components of decomposition products of SULFUR hexafluoride are introduced. Different mechanisms of decomposition products in partial discharge defects and abnormal heating defects were analyzed. The effects of partial discharge defects, abnormal heating defects and adsorbents on the decomposition products were studied.