TY - JOUR
T1 - The influence of atmospheric conditions on the leakage current of ceramic insulators on the Colombian Caribbean coast
AU - Castillo Sierra, Rafael
AU - Oviedo-Trespalacios, Oscar
AU - Candelo, John E.
AU - Soto, Jose D.
PY - 2015
Y1 - 2015
N2 - The contamination of electrical insulators is one of the major contributors to the risk of operation outages in electrical substations, especially in coastal zones with high salinity levels and atmospheric pollution. By using the measurement of leakage-currents, which is one of the main indicators of contamination in insulators, this work seeks to the determine the correlation with climatic variables, such as ambient temperature, relative humidity, solar irradiance, atmospheric pressure and wind speed and direction. The results obtained provide an input to the behaviour of the leakage current under atmospheric conditions that are particular to the Caribbean coast of Colombia. Spearman’s rank correlation coefficients and principal component analysis are utilised to determine the significant relationships among the different variables under consideration. The necessary information for the study was obtained via historical databases of both atmospheric variables and the leakage current measured in over a period of 1 year in a 220-kV potential transformer insulator. We identified the influencing factors of temperature, humidity, radiation, wind speed and direction on the magnitude of the leakage current as the most relevant.
AB - The contamination of electrical insulators is one of the major contributors to the risk of operation outages in electrical substations, especially in coastal zones with high salinity levels and atmospheric pollution. By using the measurement of leakage-currents, which is one of the main indicators of contamination in insulators, this work seeks to the determine the correlation with climatic variables, such as ambient temperature, relative humidity, solar irradiance, atmospheric pressure and wind speed and direction. The results obtained provide an input to the behaviour of the leakage current under atmospheric conditions that are particular to the Caribbean coast of Colombia. Spearman’s rank correlation coefficients and principal component analysis are utilised to determine the significant relationships among the different variables under consideration. The necessary information for the study was obtained via historical databases of both atmospheric variables and the leakage current measured in over a period of 1 year in a 220-kV potential transformer insulator. We identified the influencing factors of temperature, humidity, radiation, wind speed and direction on the magnitude of the leakage current as the most relevant.
KW - Atmospheric variables
KW - Environmental analysis
KW - Insulators
KW - Leakage current
KW - Pollution
KW - Pollution monitoring
UR - http://www.scopus.com/inward/record.url?scp=84925497984&partnerID=8YFLogxK
U2 - 10.1007/s11356-014-3729-3
DO - 10.1007/s11356-014-3729-3
M3 - Article
C2 - 25339532
AN - SCOPUS:84925497984
SN - 0944-1344
VL - 22
SP - 2526
EP - 2536
JO - Environmental Science and Pollution Research
JF - Environmental Science and Pollution Research
IS - 4
ER -