Review on Gassing Tendency of Different Insulating Fluids towards Transformer Applications

This paper reports the critical reviews on gassing tendency of different insulating fluids along with precautionary measures to be considered during their fault diagnosis in transformer insulation. The experimental techniques and procedures for identifying due electrical thermal stress stray phenomenon has been elucidated. interpretation schemes used determining faults transformers results unexpected errors when historical data relating mineral oil is other alternative fluids. Mineral natural ester show a positive compared synthetic which exhibit negative tendency. gases are mostly breakage C-C bonds under normal operating temperature transformer. Among hydrocarbons, hydrogen ethylene more predominantly formed lower temperatures. silicone stable even localised hot spots simulated observing lesser oil. impact additives oxygen water content can lead gas’s causing confusion towards identification actual occurring transformers. Furthermore, regeneration using adsorbents reduces depending number cycles its reclamation.