A REVIEW OF CONDITION MONITORING ASSESSMENT OF POWER TRANSFORMERS INSULATION

In regard to condition monitoring assessment of power transformers, so many techniques and researches have been carried out till date and some being under progress. The insulation of coils of a power transformer is employed by the Kraft paper and dipped in an insulating mineral oil. Both of these insulation terms demean with the passage of time as occurrence of fault so lead to decrease in efficiency of transformer. The paper is presented to show a widespread assessment of winding insulation provided by dielectric oil and paper. The intention is to present an extensive point of view on the winding insulation of power transformers which deals to find out an alternative to mineral oil in which paper degradation can be minimized and to characterize the Kraft paper. The presented references are broadly classified in the paper would provide rapid and practical relevance.