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Development of Arc-Guided Protection Devices Against Lightning Breakage of Covered Conductors on Distribution Lines

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4 Author(s)
Weijiang Chen ; UHV Div., State Grid Cooperation of China, Beijing, China ; Shanqiang Gu ; Jinliang He ; Bin Yin

The breakage of overhead covered conductors on distribution lines resulting from the short-circuit arcs caused by lightning flash becomes a challenge as the application of covered conductors increases on distribution lines. Based on various methodologies and devices developed to avoid the covered conductor breakage in the world, novel arc-guided devices, including arcing protection hardware with barbs, clamping post composite insulator, and barb electrode clamping post porcelain/composite insulator are presented in this paper. Experimental results are also presented to validate these new developed devices. Devices based on the developed technologies have been widely applied on the power grids in China successfully.

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Power Delivery, IEEE Transactions on  (Volume:25 ,  Issue: 1 )