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In recent years, an increasing number of high voltage cable joints have been installed in large cities, such as Guangzhou and Shenzhen, in the area of China Southern Power Grid. Several failures of 110kV and 220kV silicone rubber pre-molded cable joints happened, which resulted in great power loss and big risk to the power system safe operation. In order to understand the mechanism of electrical tree...
In a previous programme sections of the same XLPE-insulated ac-cables were stressed under different electro-thermal conditions and for various durations. Here, thin peelings from the cable insulation have their electrical endurance compared with peelings taken from an unstressed cable section, under the same test conditions. The aim is to verify whether or not the cable stressing had altered the inherent...
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