高电压技术2017，Vol.43Issue(3)：900-908,9.DOI:10.13336/j.1003-6520.hve.20170303029
分裂导线覆冰增长模拟计算及试验验证
Numerical and Experimental Study of Accreted Ice on Bundle Conductor
摘要
Abstract
In the process of bundle conductor icing,downstream conductor is in the wake zone of upstream conductor and shadowing effect has an influence on air flow field and water droplet trajectories,so icing accretion characteristics are different between them.We adopted the Lagrange framework to calculate the water droplet trajectories and obtained the relations between collision coefficient and key factors.Results show that shadowing effect plays a major role in icing accretion characteristics.Collision coefficient (β) is increased with the increasing ofv or MVD.Within a certain diameter,D has a negative correlation with collision coefficient of bundled conductor (β),that is,β is decreased with the increasing of D.AL has no influence on collision coefficient of upstream conductor while collision coefficient of downstream conductor is rising with the increasing of AL.The influence on ice shape on bundle conductor surface is analyzed in this paper based on control volume and thermodynamic equilibrium equations.In addition,icing tests on 2-bundled conductor were carried out in an artificial climate chamber,and the results verified the validity of the calculation method.关键词
分裂导线/遮蔽效应/碰撞系数/覆冰特性/冰形预测Key words
bundle conductor/shadowing effect/collision coefficient/icing characteristics/ice shape prediction引用本文复制引用
胡琴,于洪杰,李毅,舒立春,蒋兴良,梁健..分裂导线覆冰增长模拟计算及试验验证[J].高电压技术,2017,43(3):900-908,9.基金项目
国家重点基础研究发展计划(973计划)(2014CB260401) （973计划）
国家自然科学基金(51377180).Program supported by National Basic Research Program of China(973 Program) (2014CB260401),National Natural Science Foundation of China (51377180). （51377180）
