地形抬升型微地形下台风风场计算模拟  

Calculation and Simulation of Typhoon Wind Field with Terrain Uplifting Micro-topography

作　　者：黄明祥[1] 卞宏志 庄金康 张建勋[1] 翁兰溪 兰生[2] HUANG Ming-xiang;BIAN Hong-zhi;ZHUANG Jin-kang;ZHANG Jian-xun;WENG Lan-xi;LAN Sheng(Fujian Electric Power Construction Branch,Fuzhou 350013,China;College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350013,China;Power China Fujian Electric Power Survey&Design Institute Co.,Ltd.,Fuzhou 350013,China)

机构地区：[1]福建省电力有限公司建设分公司,福州350013 [2]福州大学电气学院,福州350013 [3]中国电建集团福建省电力勘测设计院有限公司,福州350013

出　　处：《科学技术与工程》2020年第30期12423-12427,共5页Science Technology and Engineering

基　　金：国网福建省电力有限公司科技项目(SGFJJS00GCJS1900064)。

摘　　要：福建地区多为丘陵地貌且夏季台风多发,台风在地形作用下破坏输电线路,造成巨大经济损失。针对现有山区输电线路抗风设计标准偏低问题,以台风经过地形抬升型微地形的风速加速效应为研究对象,依据流体力学理论为基础,采用计算流体力学方法,通过对实际微地形的建模仿真,研究了不同风向角对地形抬升型微地形对风速的加速作用。计算结果表明:地形抬升型微地形对风速有明显的加速作用,风速加速效应最大可达到1.53倍,远超过了国家标准规定。研究结果有利于解决微地形地区输电线抗风设计的执行标准偏低的问题,以及对多台风地区的输电线路抗风设计具有一定的工程参考价值。Fujian Province in Southeast China features mostly hilly landforms,where typhoons occur frequently in summer,destroying power transmission lines under the impact of terrain.However,the current standards for windproof design of transmission lines in mountainous areas are low and shall be upgraded.Therefore,the influence of wind speed acceleration effects of typhoons passing through terrain-uplifting micro-topography was studied.Based on the theory of fluid mechanics,the method of computational fluid dynamics was adopted.Through modeling and simulation of actual micro-terrain,the acceleration effect of different wind direction angles on terrain-uplifting micro-terrain on wind speed was calculated.The calculation results show that the uplifting micro-topography has a significant acceleration effect on wind speed,and the maximum wind speed acceleration effect could reach 1.53 times,which far exceeds the national standard.The research results provide valid information to upgrade the current national standards for windproof design of transmission lines in hilly micro-topography areas,and offer an engineering reference for windproof design of transmission lines in multi-typhoon areas.

关 键 词：微地形 台风模拟 流体力学 抗风设计 

分 类 号：TM732[电气工程—电力系统及自动化]