Design and Application of Anti-Flashover Wrap-Around Booster Shed
In order to effectively address flashover issues in power grids,a novel wrap-around booster shed structure has been developed and extensively tested on 110 kV porcelain post insulators under conditions of pollution,icing,and rain exposure.The results indicate that the installation of wrap-around booster sheds onto the surface of porcelain post in-sulators can significantly increase their flashover voltage.Different numbers of installed sheds have varying effects on en-hancing the flashover voltages under polluted,icy,and rainy conditions.For 110 kV porcelain post insulators,the instal-lation of three booster sheds demonstrates excellent anti-rain flashover effect,increasing the rain flashover voltage by 26.5%.The installation of three booster sheds maximally increases the icing flashover voltage by 107.8%.Furthermore,installing six booster sheds provides the best anti-rain flashover performance,raising the pollution flashover voltage by 67%,which exceeds the anti-pollution flashover level achieved by direct application of RTV coatings.
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