Water Content in Transformer Insulation System: A Review on the Detection and Quantification Methods

Water can be an irritant to a power transformer, as it is recognized major hazard the operation of transformers. The water content transformer insulation system comprises in oil and cellulose paper. increase leads reduced breakdown voltage, accelerated aging oil–paper system, possibility producing bubbles at high temperatures. Therefore, various techniques have been applied measure both paper insulation. This article comprehensively reviews analyzes methods (technically or nontechnically) that used monitor systems. Apart from discussing advantages drawbacks these methods, accuracy, measurement time, cost each technique are also elucidated this review. review extremely useful utility monitoring maintaining good condition Based on reviewed their challenges, few future research directions prospects for determining systems outlined, such utilizing artificial intelligence enhancing current techniques.