Effects on lifetime of low voltage conductors due to stationary power quality disturbances

This paper presents a methodology to estimate the effects of heating and lifetime in Low Voltage conductors (LV) due to the presence of stationary power quality disturbances. Conductor overheating and cable insulation accelerated aging can be caused by temporary increases in the rms values of the vo...

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Bibliographic Details
Published inDyna (Medellín, Colombia) Vol. 82; no. 192; pp. 44 - 51
Main Authors Duran-Tovar, Ivan Camilo, Pavas-Martínez, Fabio Andrés, Duarte-Velasco, Oscar German
Format Journal Article
LanguageEnglish
Portuguese
Published Bogota Universidad Nacional de Colombia 01.08.2015
Subjects
ENGINEERING, MULTIDISCIPLINARY
Harmonics
Unbalance
Phase displacement
Armónicos
Factor de envejecimiento acelerado
Power quality
tiempo de vida del aislamiento
Arrhenius equation
Aging Factor
insulation lifetime
Calidad de potencia
Ecuación de Arrhenius
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Summary:This paper presents a methodology to estimate the effects of heating and lifetime in Low Voltage conductors (LV) due to the presence of stationary power quality disturbances. Conductor overheating and cable insulation accelerated aging can be caused by temporary increases in the rms values of the voltages and currents due to stationary disturbances. Waveform distortion, unbalance and phase displacements can be considered among the stationary disturbances. For disturbances with short duration, there is no significant reductions in the insulation lifetime, but disturbances acting for long time periods will cause cumulative and detrimental effects. Currently valid models for insulation aging are employed; the expected power quality disturbance levels are extracted from power quality data bases. A discussion about the effects on insulation lifetime is presented.
ISSN:0012-7353
2346-2183
DOI:10.15446/dyna.v82n192.48568