Streaming Electrification of Different Insulating Fluids in Power Transformers

This paper presents a detailed review of the streaming electrification phenomena different insulating fluids for power transformers. The comparison techniques used to assess charging tendency is discussed depending on flow type (planar or centrifugal), volume oil, and interface material. charge separation between fluid metallic/pressboard interfaces explained in terms electrical double layer formation involving fixed diffuse layer. Based experimental results, observed be function various factors such as speed, temperature, electric field, surface roughness. Depending molecular structure liquids that come into contact with solid insulation at interface, current can increase; hence, suitable additive (benzotriazole, fullerene, Irgamet 39) selected based polarity. degradation liquid upon ageing, which increases reclamation aged using adsorbents (Fuller’s earth, activated carbon, bentonite, alumina), possible method suppress static through improving its dielectric properties. nanofluids show higher compared base no change even after process. energization process alternating (AC) direct (DC) impacts phenomenon magnitude diffusion sulfur compounds another major hazard transformers because sulfide ions affect physio-chemical reaction material, responsible current.