Mobile QR Code QR CODE : The Transactions of the Korean Institute of Electrical Engineers
Title Study on Inclined Plate Tracking and Erosion Characteristics of HVDC for Liquid Silicone Rubber Nano Silica Composites
Authors 박재준(Jae-Jun Park)
DOI http://doi.org/10.5370/KIEE.2019.68.2.326
Page pp.326-333
ISSN 1975-8359
Keywords HVDC IPT(Inclined plate tracking and erosion) ; Leakage current ; Surface erosion ; Thermal imaging camera ; HVDC polarity
Abstract In this paper, two types of SiR-Nano Composites were fabricated to develop HVAC insulator. Tracking and erosion characteristics of ± HVDC voltage 3.5 kV were investigated using IPT system based on AC IEC regulations. In tracking and erosion, (-) HVDC than (+) HVDC resulted in a large number of arc leakage currents due to the drying-arc discharge. However, the results of tracking and erosion show that (+) HVDC is more severe than (-) HVDC. (+) HVDC generated many intermittent surface discharges. Unlike this, (-) HVDC caused continuous discharge from the moment when the dross was dropped on the lower electrode. (+) HVDC occupies a large number of moving discharges from the lower electrode to the upper electrode, and (-) HVDC concentrates on the lower electrode and discharges and erodes.