| 绝缘子串风偏角风荷载调整系数的研究 |
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| 引用本文： | 严波,林雪松,罗伟,刘仲全,陈志达. 绝缘子串风偏角风荷载调整系数的研究[J]. 工程力学, 2010, 27(1): 221-227 |
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| 作者姓名： | 严波 林雪松 罗伟 刘仲全 陈志达 |
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| 作者单位： | 重庆大学工程力学系,重庆,400030;中国电力工程顾问集团公司西南电力设计院,成都,610021 |
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| 基金项目： | 中国电力工程顾问集团公司科技项目(DG1-D01-2005) |
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| 摘 要： | 利用ABAQUS有限元软件对具有不同档距、高差和离地面高度的特征段线路在不同平均风速的随机风场作用下的风偏响应进行时程分析,得到了特征段线路中悬垂绝缘子串下端点的风偏响应时程曲线,进一步得到风偏角的统计值。通过对现行设计规程中风偏角计算公式的分析,提出通过引入风荷载调整系数对风偏角计算公式进行修正的方法。结合数值模拟结果,给出了输电线路在不同档距、高差和离地面高度情况下,计算悬垂绝缘子串风偏角时的风荷载调整系数的取值。该文采用数值模拟方法研究500kV超高压输电线路在随机风荷载作用下的风偏问题。
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| 关 键 词： | 悬垂绝缘子串 风偏角 随机风场 风荷载调整系数 数值模拟 |
RESEARCH ON DYNAMIC WIND LOAD FACTORS FOR WINDAGE YAW ANGLE OF SUSPENSION INSULATOR STRINGS |
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| YAN Bo,LIN Xue-song,LUO Wei,LIU Zhong-quan,CHEN Zhi-da. RESEARCH ON DYNAMIC WIND LOAD FACTORS FOR WINDAGE YAW ANGLE OF SUSPENSION INSULATOR STRINGS[J]. Engineering Mechanics, 2010, 27(1): 221-227 |
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| Authors: | YAN Bo LIN Xue-song LUO Wei LIU Zhong-quan CHEN Zhi-da |
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| Affiliation: | 1.Department of Engineering Mechanics;Chongqing University;Chongqing 400030;China;2.Southwest Electric Power Design Institute of Electric Power Project Consultant Group of China;Chengdu 610021;China |
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| Abstract: | The historic response analyses of windage yaw of typical transmission line sections are carried out by means of ABAQUS software.These transmission line sections have different spans and different heights over the ground.The statistic values of windage way angle of the suspension insulator string are obtained.It is suggested that the formulation for determining the windage yaw angle of the suspension insulator string in current design code be modified by introducing a dynamic wind load factor.The factor corr... |
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| Keywords: | suspension insulator string windage yaw angle stochastic wind field dynamic wind load factor numerical simulation |
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