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DC Pollution Flashover Characteristics on Porcelain Insulators of Parallel Double-strings Form at High Altitude
Author(s): 
Pages: 2613-2620
Year: Issue:  11
Journal: High Voltage Engineering

Keyword:  直流高海拔双串并联电弧发展污闪特性串间距;
Abstract: 为研究高海拔直流条件下大吨位瓷绝缘子串的双串并联污闪特性,在高海拔条件下,对XZP1-300直流瓷绝缘子在不同污秽条件及不同串间间距下进行了单串及双申并联人工污秽试验.并通过高速摄影仪拍摄的电弧发展过程的录像,揭示了高海拔条件下盐密和串间距等因素对大吨位瓷绝缘子直流污闪过程的影响.试验发现,高海拔条件下直流污闪存在较严重的片间桥络和飘弧现象,双串并联时电弧发展的独立性及飘弧的程度呈现出一定的规律性...
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