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Nanocomposites have gained interest as insulating materials due to their excellent ability to resist electrical discharges. However, the poor adhesion of nanoparticles with polymer may reduce their capability towards discharge resistances. In the present study, atmospheric pressure plasma treatment was used to treat SiO2 nanoparticles to improve the dispersion of silicone rubber (SiR) based nanocomposites...
Electrical tree initiation voltage and tree propagation length for unfilled silicone rubber, silicone rubber nanocomposites filled with 1% and 3% of OMMT and SiO2 was presented in this paper. This study investigates the capabilities of OMMT and SiO2 in silicone rubber in order to inhibit the growth of electrical treeing. From the result of this study has indicated that in the filled nanocomposite...
Electrical treeing is one of the main reasons for failure of polymeric materials used in high voltage applications. Treeing is observed to originate at points where impurities, voids, defects, or conducting projections cause excessive local electric field stress in the dielectric. It has been proposed that nanofillers could be employed as an electrical tree inhibitor in polymeric insulating materials...
This paper presents investigation on the propagation of electrical treeing in silicone rubber samples filled with Montmorillonite (MMT) and Organo-montmorillonite (OMMT) nanoclays as fillers for electrical tree inihibition. Treeing experiments were conducted by applying ac voltage with increasing rate of 0.5 kV per second at power frequency on pure silicone rubber, silicone rubber filled with 1% MMT...
The partial discharges (PDpsilas) due to artificial void in the sample of polyvinyl chloride (PVC) sheet have been investigated in this work. PD may cause the degradation of insulating materials and affect the lifetime of high-voltage apparatuses. Therefore, it is important to understand the correlation between PD inception voltages under various voltage source conditions. An experimental work using...
A lightning air terminal (LAT) tip can be damaged under prolonged period of service due to harsh environmental conditions among those is the impact of acid rain. The altered LAT tip profile will ultimately produce different corona discharge pattern which can influence the performance of the LAT itself. This paper presents a new closed loop mathematical modelling which can simulate the magnitude of...
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