The influence of temperature and aging of cellulose on water distribution in oil-paper insulation

This paper deals with the problem of moisture in the transformer insulation system. The author proposed that apart from the temperature, the uneven aging of cellulose insulation may have a substantial effect on moisture distribution. The main goal of the research was to check the influence of the degree of aging of winding paper on moisture distribution by taking into account temperature distribution. New paper and paper at three different stages of aging were tested. The obtained results confirmed the hypothesis - it was proven that the uneven aging of insulation may enhance moisture distribution in the insulation system.