覆冰环境下输电导线外流场数值模拟与分析  

Numerical Simulation and Analysis of External Flow Field around Transmission Line under Icing Condition

作　　者：黄新波[1] 林淑凡[1] 朱永灿[2] 王玉鑫[1] 宋桐[1] 

机构地区：[1]西安工程大学电子信息学院,西安市710048 [2]西安电子科技大学机电工程学院,西安市710071

出　　处：《电力建设》2014年第5期6-12,共7页Electric Power Construction

基　　金：国家自然科学基金项目(51177115);国家重点基础研究发展计划项目(973计划)(2009CB724507-3);教育部新世纪优秀人才支撑计划(NCET-11-1043)

摘　　要：利用基于有限体积法的流体数值模拟软件FLUENT研究了覆冰气候环境下输电线路导线的外流场,分析了导线周围气流场的速度场、温度场、压力场分布规律,并分析了覆冰过程所涉及的参数(风速、环境温度、导线温度、导线半径)对各场的影响。在实际情况中,导线迎风区域容易覆冰,背风区域不易覆冰,通过对外流场中速度场、温度场,压力场的分布规律和特征分析总结,揭示了导线不均匀覆冰的规律和机理。同时,对覆冰过程涉及参数的影响分析揭示了直径较小的导线容易覆冰的原因。The external flow field around transmission line under icing conditions was studied with using fluid numerical simulation software FLUENT based on finite volume method.The distribution characteristics of velocity field,temperature field and pressure field of the airflow around transmission line were analyzed.Then,the effects of wind speed,environment temperature,wire surface temperature,and wire radius on velocity field,temperature field and pressure field were researched.In fact,the windward of the transmission line is easy to freeze and the leeward of the transmission line is hard to freeze.The comprehensive analysis of the distribution characteristics of velocity field,temperature field and pressure field reveals the reason and mechanism of uneven distributed icing on the transmission line.And the analysis of the relevant parameters in icing shows why the wire with smaller radius is more easily covered in ice.

关 键 词：输电导线 覆冰 外流场 气流场 数值模拟 FLUENT 不均匀覆冰 

分 类 号：TM75[电气工程—电力系统及自动化] TU47[建筑科学—结构工程]