ANALYSIS OF MOVEMENT OF TINY SPHERICAL CONDUCTOR IN SYNTHETIC ESTER IN POWER TRANSFORMER USING CFD

Power transformer is very important part of a power sector. Power transformers are of various rating, those are used in power sector based on requirement. Power Transformers are mostly oil filled Transformers. The fluid which is filled inside the power transformer acts as a coolant as well as insulating agent of the transformer. This fluid may consists of number of diminutive conducting and non-conducting particles as a result of age and continuous usage. Non-conducting particles are considered to be non harmful virus the conducting particles which are called micro conductors are considered to be as hazardous to transformer. One of the important consequences of presence of these particles is partial discharge (PD). Stress formed by these conducting particles lead to partial discharges inside the transformer. This paper is intended to study the behaviour of such particles which are of spherical shape inside the transformer when synthetic ester is used as cooling agent and insulating medium using computational fluid dynamics (CFD).