DefinePK

Abstract

A conventional three phase gas protected substation comprises of every one of its segments encased in sulphur hexafluoride gas. The dielectric quality of SF6 is too high when contrasted with that of air and subsequently makes it electrically better than customary air protection. In any case, SF6 is thought to be a green house gas and subsequently its use is to be constrained. This can be accomplished by utilizing selective gases like Nitrogen (N2), Carbon dioxide (CO2). On the other hand , for better after effects of getting both high dielectric properties and decreasing green house impacts, blends of these gases alongside SF6 can be utilized for agreeable activity of GIS. The significant issue with the GIS is the presence of electric contaminants which for the most part begin from the inside parts of the enclosures. The movement of these metallic contaminants is to be limited to enhance the proficient activity of GIS. The present work manages investigation of the movement of generally experienced aluminium and copper metallic particle contaminants in the Gas insulated Substations. The blends of SF6+CO2, SF6+N2 and SF6+air have been utilized as options for unadulterated SF6 gas. The developments of metallic particles are investigated for various extents of gas mixtures and 550kV power frequency ac voltage, the details of which are discussed.