Study on the Icing Flashover Characteristics of Porcelain Double Sheds Suspension Insulator String
In the present paper, study on icing flashover characteristics were carried out in artificial climate chamber of State Grid Electric Power Research Institute (SGEPRI) with XWP2-160 porcelain double sheds suspension insulators. According to IEEE Task Force on insulator icing test methods the natural freezing rain condition was simulated and 3 to 7 units XWP2-160 insulators were icing energized at service voltage. Based on the tests results, the U50％ increases with an increase in dry arcing distance linearly for XWP2-160 not more than 7 units. The effect on icing flashover performance of the factors such as ice thickness and applied water conductivity were investigated respectively. More over, ice states and discharge process of insulators icing energized were compared with the de-energized ones and discussed. For the air gaps can enhance the electrical strength of iced insulators, the U50％ withstand voltage of insulators icing energized is higher than the de-energized ones.
insulator icing flashover icing energized U50 withstand voltage dry arcing distance
Yunpeng Liu Song Gao Daochun Huang Tao Yu Jie Lu Gang Meng Tao Xu Tao Yao
Department of Electrical Engineering, North China Elctric Power University, Baoding 071003, CHINA St Department of Electrical Engineering, North China Elctric Power University, Baoding 071003, CHINA School of Electrical Engineering, Wuhan University, Wuhan 430072, CHINA State Grid Electric Power Research Insititute of SGCC, Wuhan 430074, CHINA
国际会议
哈尔滨
英文
721-724
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）