Polymeric insulators characterization aged in salt fog chamber by different techniques

Hernández-Corona, R.; Ramírez-Vázquez, Isaías

doi:10.1109/ceidp.2016.7785687

Cited by 1 publication

(2 citation statements)

References 5 publications

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“…Contamination increases the leakage current, as well as the aging process. We confirm this fact in our experimental study [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. However, the changes in the leakage current, comparing results at different pollution levels, are not so significant.…”

Section: Discussionsupporting

confidence: 87%

“…Others use the salt fog method, included in the standard IEC-61109:2008 [ 10 ]. This method uses a chamber to ensure the uniformity of the contamination on the entire surface and a clean comparison between different levels of the amount of salt [ 11 , 12 , 13 , 14 , 15 ]. Another method used is pre-contamination with a set solution of salt, water, and kaolin.…”

Section: Introductionmentioning

confidence: 99%

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Sensing Method Using Dielectric Loss Factor to Evaluate Surface Conditions on Polluted Porcelain Insulator

Šárpataky

Dolník

Zbojovský

et al. 2022

Sensors

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Insulator diagnostics is still a topical issue. No one has yet found out how to accurately determine the condition of all insulators and decide when replacement or maintenance is required. Insulators are one of the main components of a transmission and distribution system and must withstand high voltages in all weather conditions. Moisture and dirt are the main factors influencing the insulating properties of insulators. This article deals with the effect of pollution on a porcelain insulator. An Omicron MI 600 measuring system monitors the changes in the dielectric loss factor and leakage current in a wide frequency range (10 Hz to 1 kHz) to evaluate the contamination level. We applied three high voltage levels (5 kV, 7.5 kV, and 10 kV) to the porcelain insulator to monitor changes in the mentioned quantities with various frequencies. The measurement results confirmed the usability of the dielectric loss factor and leakage current for the diagnosis of insulator pollution. The dielectric loss factor showed more promising results than the leakage current.

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