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Silicone rubber (SiR) is a kind of basic insulating material and is widely used to coat porcelain and glass high voltage insulators. In HVDC transmission lines, corona could occur occasionally, which can markedly inject the charges into insulators surface and damage the insulators. The existence of surface charge has a great effect on insulation degradation and plays an important role on dielectric...
Room temperature vulcanized (RTV) silicone rubber (SiR) is a kind of basic insulating material and is widely used to coat porcelain and glass high voltage insulators. In HVDC transmission lines, electric corona could take place even on well-designed hardware and insulators, which could make charge accumulate on the surface of insulators and inject into the surface. However, with the disadvantage of...
Polyimide film, as a special type of engineering plastic film, is a kind of basic insulating material and is widely applied in the aerial, nuclear, microelectronic industry, turn to turn insulation and turn to ground insulation of inverter-fed motors. However, with the disadvantage of organic polymer, its corona-resistance property is not good enough, which makes insulation early failures occur frequently...
With advantage of excellent thermostability, mechanical property, polyimide films have been widely used in the aerial, nuclear, microelectronic industry. However, The dielectric breakdown of the polyimide films caused by surface charge often occurs and becomes one of main problems to the safety and reliability of insulation system. Addition of nanoparticles into polyimide films can improve the insulating...
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