Outdoor polymeric insulators long-term exposed to HVDC

Author

Sorqvis, Torbjoörn ; Vlastos, A.E.

Author_Institution

Dept. of High Voltage Eng., Chalmers Univ. of Technol., Gothenburg, Sweden

Volume

12

Issue

2

fYear

1997

fDate

4/1/1997 12:00:00 AM

Firstpage

1041

Lastpage

1048

Abstract

Field experience from outdoor polymeric insulators exposed to HVDC under natural contamination conditions is presented. This paper summarizes the peak leakage current statistics, the hydrophobicity and the surface material conditions studied by electron spectroscopy for chemical analysis (ESCA) and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. The results show a strong interrelation between the surface conditions and the performance with respect to leakage currents. Moreover, the results show that the surface conditions and the performance of the insulators exposed to HVDC are rather similar to those of the insulators exposed to HVAC

Keywords

HVDC power transmission; ageing; electric breakdown; electric current measurement; insulator testing; leakage currents; polymer insulators; attenuated total reflection Fourier transform infrared spectroscopy; electron spectroscopy for chemical analysis; hydrophobicity; insulation breakdown testing; insulator performance; long-term HVDC exposure; natural contamination conditions; outdoor polymeric insulators; peak leakage current; surface material conditions; Chemical analysis; Electrons; HVDC transmission; Infrared spectra; Leakage current; Plastic insulation; Polymers; Spectroscopy; Statistical analysis; Surface contamination;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.584435

Filename

584435