Title :
Study of samples of composite insulating system under electrical and thermal stresses
Author :
Danikas, Michalis G.
Author_Institution :
ASEA Brown Boveri Ltd., Switzerland
Abstract :
Factors affecting the performance of small composite samples are investigated, and the capabilities of the uniaxially oriented polyethylene (UOPE) tape/dodecylbenzene (DDB) oil insulation system are evaluated. The apparatus used to study the influence of the combination of electrical and thermal stresses on the performance of the samples is described. Experimental results are reported for both uniform and nonuniform electrode arrangements. The discharge energy/material damage tests showed that a satisfactory correlation between the total surface area damage of the tapes and the energy supplied by the discharge exists. This suggests that the measurement of total discharge energy is a very useful technique in evaluating electrical insulation and may prove useful as a diagnostic tool for predicting the remaining life of insulation.<>
Keywords :
cable insulation; composite insulating materials; environmental testing; high-voltage engineering; insulating oils; materials testing; organic insulating materials; polymers; DDB; UOPE; combined electrical thermal stresses; composite insulating system; diagnostic tool; electrical stress; evaluating electrical insulation; insulation life prediction; nonuniform electrode arrangements; oil insulation system; polyethylene tape oil insulation system; small composite samples; tape/dodecylbenzene; thermal stresses; total discharge energy; total surface area damage; uniaxially oriented polyethylene; Cable insulation; Dielectric losses; Dielectrics and electrical insulation; Electrodes; Oil insulation; Petroleum; Polyethylene; Polymers; Power cables; Thermal stresses;
Journal_Title :
Electrical Insulation Magazine, IEEE
