Title :
Surface characterization of naturally contaminated HVDC insulators
Author :
Besztercey, G. ; Karady, G.G. ; Ruff, D.L.
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
No contamination related problems were observed during seven years of service on silicone rubber insulators although a large amount of salt containing solid contamination has been deposited on their surface. The contamination layer consisted of solid particles and silicone oil. The contaminated insulators did not lose their hydrophobicity during a 72 hours clean fog test. The composition of the surface contamination layer explains the differences between the results of usual laboratory contamination tests and the good performance of silicone rubber in outdoors insulation.
Keywords :
HVDC power transmission; flashover; insulator contamination; insulator testing; silicone rubber insulators; surface discharges; clean fog test; hydrophobicity; insulator breakdown testing; naturally contaminated HVDC insulators; outdoor insulation performance; salt containing solid contamination; silicone oil; silicone rubber insulators; solid particles; surface characterization; surface contamination layer; HVDC transmission; Insulation; Insulator testing; Petroleum; Rough surfaces; Rubber; Solids; Surface cleaning; Surface contamination; Surface roughness;
Conference_Titel :
Electric Power Engineering, 1999. PowerTech Budapest 99. International Conference on
Conference_Location :
Budapest, Hungary
Print_ISBN :
0-7803-5836-8
DOI :
10.1109/PTC.1999.826557
