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《High Voltage Engineering》 2005-04
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Analysis and Countermeasures for Large Area Accident Cause by Icing on Transmission Line

HU Yi (Wuhan High Voltage Resarch Institute, Wuhan 430074, China)  
Analysis and countermeasures for large area accident cause by icing on transmission line is presented in this paper aiming at fault of icing flashover, conductor galloping and broken line on 500kV transmission in end of 2004 and beginning of 2005. It is pointed out that the serious icing is the direct reason of damage of equipment. The heavy icing damages the weak part of tower and meteorological condition causes the tower falling down. The pollution in ice reduces the leakage distance so the thick icing is the main reason of flashover. The temperature and type of insulators also affect the flashover. The research that had to be carried is proposed.
【CateGory Index】: TM755
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