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Lightning Impulse Breakdown Characteristic of Dry-Air/Silicone Rubber Hybrid Insulation in Rod-Plane Electrode
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 Title & Authors
Lightning Impulse Breakdown Characteristic of Dry-Air/Silicone Rubber Hybrid Insulation in Rod-Plane Electrode
Kwon, Jung-Hun; Seo, Cheong-Won; Kim, Yu-Min; Lim, Kee-Joe;
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Sulfur hexafluoride (SF6) gas is used widely in electric power equipment such as Gas Insulated Switchgear (GIS), Gas Insulation transmission Line (GIL), and Gas Circuit Breaker (GCB). But applications of SF6 should be restricted because SF6 gas is one of the greenhouse effect gases. To reduce use of SF6 gas, a study on eco-friendly alternative insulation medium is needed. In this paper, we investigated lightning impulse (LI) breakdown of dry-air which is attracting attention as an ecofriendly alternative gas and the LI breakdown of hybrid insulation combined with dry-air and solid insulation (Room-Temperature Vulcanizing Silicone Rubber-RTV SIR) and dry-air in inhomogeneous fields according to gap distance and pressure. The experiment results showed that the LI breakdown strength of hybrid insulation system was higher than that of dry-air insulation system. It was verified that the development of technology related to eco-friendly power apparatus compact such GIS, GCB and GIL can be used as basic research data.
;Dry-Air;Rod-Plane electrode;Hybrid insulation;Lightning impulse;
 Cited by
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