Deterioration of Insulation Performance and Texicity on Discharge Decomposition Products in Gaseous Dielectric Systems

点击翻译按钮获取中文摘要

We have investigated the toxicity measurement on discharge decomposition products in gaseous dielectric systems in which SFG gas is used and its deterloration effect to those insulation performance. In order tio change the nature of toxic discharge decomposition products, we have had a try on the plasma calsulating code which is produced by laser and the corona discharge which are controlled by laser.From above we can complete those researches as following :(1) In SFG gas, the sorts and quantity of toxic decomposition products formed by corona discharge are depended strongly on the impurities such as H2O and O2 which are mixed on the beginning of the poring of SFG gas.(2) Those toxic decomposition products can be eliminated by an absorbent as Zeelite. But solid decomposition products can not be eliminated by this method. It relates strongstly with the deterioration of electrode surface.(3) Those gases don't have much connection with electrical insulatio performance directly, but those gases will react with electrode surface, and as a consequence of those, the shape of electrode changes and the insulation performance diteriorates.(4) In air, the calsulating code of plasma process with are irradiated by pulsed laser have been developed.(5) The technology of changing gaseous nature by the method of low-tenperature and high density plasma (streamer) which is produced by laser in the DC glow-corona discharges is possible.