Electric Tree Properties of XLPE in Low Temperature Repeated Pulsed Voltage

Cross-linked polyethylene (XLPE) can function in lower temperatures & recurrent pulsing voltage environments. The ageing of XLPE is primarily caused by the treeing mechanism that has been the subject of extensive investigation in recently times. Unfortunately, it is yet unclear how XLPE trees behave when exposed to low temperatures and repeated pulse voltage. This study looked into and studied how trees behaved when exposed to low temperatures and repeating pulse voltages. The needle-plate terminals were subjected to a positive pulsed voltage with a magnitude of 12 kV as well as a frequency of 300 as well as 400 Hz. A experiment was conducted at temperatures of 30, 30, 30, 90, and -196 °C. There are four common morphology of electricity tree that can be seen: bushes, branches, branch-pine, & stalled tree. It is has demonstrated that when temperature drops, the likelihood of trees forming decreases. The numbers of tree channel, fractal dimensions, tree development rate, & tree initiation chance all rise with a rise in pulse frequencies, but the morphology of electrically trees remain the constant.