ON INCREASING THE OPERATIONAL LIFE OF PAPER-IMPREGNATED INSULATION OF POWER TRANSFORMERS

Electrical engineering
Authors:
Zhuravleva Natalya M. Kiesewetter Dmitry V. Reznik Aleksandr S. Smirnova Ekaterina G.
Abstract:

The substantially and experimentally confirmed the need to improve methods of monitoring the state of the base type of high-voltage insulation of power transformers (PT), and explored the possibility of increasing the electrical characteristics and slowing the destruction of the components of paper-impregnated composition by modifying the dielectric paper by bacterial cellulose in order to increase the life of the PT insulation. It is shown that structuring of plant-base of cellulose dielectric by biopolymer can improve the electrical and mechanical strength of the paper, enhances heat resistance of insulations components. These results are confirmed by evaluation of fibers parameters and insulation components microphotographs before and after aging.