Calculation and Influencing Factors of Icing Freezing Coefficient of Overhead Transmission Line
He Qing1, Li Junhui1,2, Deng Menyan1, Zhang Jian2, Du Dongmei1
1. School of Energy, Power and Mechanical Engineering North China Electric Power University Beijing 102206 China; 2. Power Transmission and Transformation Engineering Department China Electric Power Research Institute Beijing 100055 China
Abstract：The freezing coefficient is one of the most important parameters in the ice prediction model. In order to improve the calculation accuracy of the freezing coefficient, a new method for calculating the freezing coefficient collision the impact coefficient, the current joule heat and the wire surface temperature is proposed. On this basis, the comprehensive calculation and analysis of the trend of the freezing coefficient obtained by the calculation method before and after the improvement with the main influencing factors are analyzed and compared. Finally, the calculation accuracy of the new method is verified by comparison with the experimental results. The new method of freezing coefficient calculation not only improves the accuracy of ice prediction calculation, but also the influence of parameters such as micro-meteorological environment and wire characteristics on the freezing coefficient.
何青, 李军辉, 邓梦妍, 张暕, 杜冬梅. 架空输电导线覆冰冻结系数计算及其影响因素分析[J]. 电工技术学报, 2019, 34(19): 4162-4169.
He Qing, Li Junhui, Deng Menyan, Zhang Jian, Du Dongmei. Calculation and Influencing Factors of Icing Freezing Coefficient of Overhead Transmission Line. Transactions of China Electrotechnical Society, 2019, 34(19): 4162-4169.
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2019, Vol. 34 
