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Underground residential distribution (URD) power cables are aged due to electrical, thermal, mechanical and environmental stress during their service. For utilities, the online monitoring and diagnostics of the dielectric conditions of the cables help in managing their cable asset. One of the cable online diagnostic methods is based on analysis of the capacitor switching surge transient voltages on...
Measurement of switching transient voltages appearing at various locations of Underground residential distribution (URD) power cables are vital for the online monitoring and diagnostics of cable insulation condition. The cable elbow connectors are manufactured with capacitive voltage test points to indicate the power frequency voltage on the cable conductor. The cable elbow connector voltage test...
Underground residential distribution (URD) power cables are aged due to electrical, thermal, mechanical stresses and environmental stress during their service. For utilities, the online diagnostics of the dielectric conditions of the cables are of much interest. One of the cable online diagnostic methods is based on analysis of the voltage transients in URD. The cable elbow connectors are manufactured...
Underground residential distribution (URD) power cables are aged due to electrical, thermal, mechanical and environmental stress during their service. For utilities, the recent dielectric conditions of the cables are of much interest. Fast Fourier Transform Analysis of the impulse wave propagating in URD is one of the online non-destructive methods to estimate the cable insulation condition. In this...
Underground distribution power cables are aged due to electrical, thermal, mechanical stresses and environmental stress during their service. For utilities, the recent dielectric conditions of the cables are of much interest. Some destructive and non-destructive methods are available to estimate the actual status of the cable insulation. One of the methods is to estimate the cable insulation condition...
Aging phenomenon of polymeric power cables have been extensively studied during last several decades. Despite the great achievement in single aging mechanism, much less was known about the aging phenomenon of cables under multi-stress conditions. This study focused on the electrical aging of 15 kV Ethylene Propylene Rubber (EPR) power cables aged by switching impulses superimposed with ac voltage...
Medium voltage power cables are manufactured with various insulating materials. Ethylene Propylene Rubber (EPR) is one of the most common materials used in cable insulation among them. It is known that power cables in service are subjected to moisture due to wet environment which may reach the insulation and accelerate environmental aging of insulation. In the experiments set for this study, the accelerated...
Ethylene Propylene Rubber (EPR) is one of the most common polymeric materials used in medium voltage power cable insulation. It is generally accepted that the cables will encounter electric stress, thermal stress and environmental stress during their service lives. All of the stresses will activate changes in the bulk properties of insulation materials, known as electrical aging, which will lead to...
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