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Studies have proved that the dielectric strength of high-voltage DC cable used crosslinked polyethylene (XLPE) can be enhanced by nanoparticle incorporation. However, studies on the morphology of XLPE based nanocomposites and its relation with the DC dielectric strength are relatively inadequate. In this paper, XLPE/Al(OH)3 nanocomposites with different nano-filler contents (0.1 wt%–3wt%) were prepared...
Compared with the conventional microcomposites, incorporating nanoparticles into polymeric matrix can better improve breakdown performance. Much works have been done to investigate the electrical properties of nanodielectrics since the first experimental results published. It is acknowledged that the interface between nanoparticle and polymeric matrix play a dominant role in the electric properties...
Compared with breakdown strength of insulating material used in power equipments, insulator employed in power system is easy suffered from surface flashover in vacuum. So, surface flashover has become a mainly restricted factor for developing high voltage and efficiency power equipments in vacuum. Although many works have been done to investigate the characteristics of surface flashover in vacuum,...
Nano alumina particles and nano titanium dioxide particles are incorporated with low density polyethylene to fabricate samples, respectively. The breakdown performance of samples is conducted in the transformer oil. Results indicate that both ac breakdown strength and dc breakdown strength of nanocomposites with appropriate particles concentration have an increase. For example, ac breakdown strength...
In this paper, a new organic three-layer A (carbon black semi-conductive master batch and PE)-B (polyethylene)-A insulation structure was proposed and prepared to improve the performance of vacuum surface flashover by adjusting the permittivity of the A layer dielectric. It is proved that the three-layer insulation structure could greatly improve the vacuum surface flashover performance.
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