Remaining Life Assessment of Solid Insulation in Power Transformer Using Fuzzy Inference System (FIS)

摘要: In order to make an optimal decision on a transformer during maintenance, relocation, loading and replacement, its insulation condition needs to be monitored and evaluated based on ageing stress levels and faults. In this paper, the usefulness of DP is explored for monitoring the condition of cellulose paper in a power transformer. The evaluation of the remaining life in an insulating paper is done by detection of dissolved gases such as carbon oxide gases and 2FAL compound in oil. The conventional method for obtaining DP is the direct method and actual paper samples are needed from the hotspot areas in the windings, which is quite costly and an intrusive process. So indirect methods are used by which DP and remaining life from furan concentration obtained from oil samples can be estimated and it is a non-costly and non-intrusive process. Here, application of two different techniques: mathematical …