Impact of Lower Temperature on Polypropylene Electric Treeing with Repeated Pulsed Voltage

Due to its lack of bridging and environmentally favorable attributes, polyethylene (PP) has been suggested as an alternative to cross-linked polyolefin (XLPE) used as a high-voltage direct-current (HVDC) line insulation layer. The difficulty of the low heat climate may arise while operating, and also the HVDC fiber network may create repeating pulsing energy. This study analyzes the properties of PP & XLPE trees under low conditions with pulse strength of 12 kV & 400 Hz. Additional research is done into how the electrically trees of PP affected by cold temp by pulse frequencies and amplitudes. The pulsed magnitude comprised 12 and 15 kV, while the pulse frequency was 400, 800, whereas 1200 Hz. Temp for the study is 30 to -196°C was used during the test. According to the findings, it is more challenging to produce the electricity tree in the PP compared to that of XLPE. During the same treeing time, the temporal dimensions and development stage of the trees in the PP are less than those in the XLPE. The mechanism of treeing is influenced by the low temp, pulse duration, and burst strength. It has been discovered that cold temperatures prevent the development of electrical trees. The act of tree spreading is accelerated by the greater pulse frequency. At -30 above -196 °C, the availability of large increases the pace of tree development and the fractals. The increased intensity at -90°C does not, however, speed up the tree development phase.