Title :
Experimental investigation of ageing effect on the dielectric performance of FRP sticks
Author :
Zhao, Edward P. ; Kuffel, E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada
Abstract :
The dielectric performance of FRP insulator sticks, which have been in power system maintenance service for 15, 24 and 25 years respectively, have been investigated experimentally. The factors causing the deterioration of the samples are discussed. The dielectric current method was used to evaluate their performance. A homogeneous electric field was obtained by a properly designed electrode system. The experiments were conducted in a humidity controlled chamber. The results illustrate that the mechanical factor had a stronger impact on the deterioration of FRP sticks than the chemical one. The pretence of moisture caused accelerated deterioration and the hydrophobic property of FRP sticks changed with time
Keywords :
ageing; composite insulating materials; electric breakdown; fibre reinforced composites; insulation testing; maintenance engineering; organic insulating materials; 15 y; 20 y; 25 y; accelerated deterioration; ageing effect; dielectric current method; dielectric performance; electrode system; fibre reinforced plastic insulation; homogeneous electric field; humidity controlled chamber; hydrophobic property; insulation breakdown tests; insulator sticks; moisture; power system maintenance; Acceleration; Aging; Chemicals; Dielectrics and electrical insulation; Electrodes; Fiber reinforced plastics; Humidity control; Mechanical factors; Moisture; Power systems;
Conference_Titel :
Electrical Insulation, 1996., Conference Record of the 1996 IEEE International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-3531-7
DOI :
10.1109/ELINSL.1996.549342
