湖南大学学报（自然科学版）2024，Vol.51Issue(2)：45-56,12.DOI:10.16339/j.cnki.hdxbzkb.2024225
导线倾角与覆冰过程扭转因素对覆冰形状特性影响研究
Study on Influence of Conductor Inclination Angle and Twisting Factors of Icing Process on Ice Shape Characteristics
摘要
Abstract
Transmission conductors icing is a critical threat to the safety of power grid operation.Accurate prediction of the ice shape and growth trend of conductors icing can effectively prevent the occurrence of secondary disasters.Existing models for predicting the ice growth of transmission conductors seldom consider the effect of ice eccentricity torsion on the ice shape of transmission conductors.Therefore,the dynamic torsional icing prediction model of transmission conductor is established by considering the coupling torsional properties of transmission wire,such as ice eccentricity and wind speed.Based on the prediction model,the ice shape on the conductor's surface is simulated and compared with experimental data in the literature,and the validity of the model is verified.The effects of conductor inclination and temperature,wind speed,and MVD(median diameter of raindrops)on ice shape and torsional speed are further discussed with predictive models.It is found that the stratification of the ice thickness on the windward side of the conductor is gradually obvious with the increase of the tilt angle.Compared with the horizontal arrangement(zero inclination)conductor,when the inclination angle is 60°,the ice area of the wire increases by 18.26％(ice covering 125 minutes)and 26.30％(ice covering 245 minutes),and the torsion angle increases by 10.4°(ice covering 125 minutes)and 16.3°(ice covering 245 minutes),respectively,and the ice shape is"ravine".关键词
输电导线/覆冰偏心/冰形/倾斜/积冰面积/角度Key words
transmission conductors/ice eccentric/ice shape/incline/iced area/angle分类
信息技术与安全科学引用本文复制引用
周超,孟凡泽,黄钢,姬昆鹏..导线倾角与覆冰过程扭转因素对覆冰形状特性影响研究[J].湖南大学学报（自然科学版）,2024,51(2):45-56,12.基金项目
国家自然科学基金面上项目(52075169),National Natural Science Foundation of China(52075169) （52075169）
北京市自然科学基金面上项目(8202043),Beijing Natural Science Foundation(8202043) （8202043）
