分裂导线体型系数试验研究

doi:10.11930/j.issn.1004-9649.2016.05.171.07

中国电力 ›› 2016, Vol. 49 ›› Issue (5): 171-177.DOI: 10.11930/j.issn.1004-9649.2016.05.171.07

分裂导线体型系数试验研究

闵绚¹，牛华伟²，文志科¹，付晶¹，曾云飞¹

1.中国电力科学研究院，湖北武汉430074；
2.湖南大学风工程试验研究中心，湖南长沙410082

收稿日期:2016-02-08 出版日期:2016-05-16 发布日期:2016-05-16
作者简介:闵绚（1984—），女，湖北武汉人，硕士，工程师，从事输电线路的运行维护、电网防灾减灾技术研究。E-mail: minxuan@epri.sgcc.com.cn
基金资助:
国家电网公司科技资助项目（GY71-11-045）

Experimental Study on Shape Coefficient of Bundle Conductors

MIN Xuan¹, NIU Huawei², WEN Zhike¹, FU Jing¹, ZENG Yunfei¹

1. China Electric Power Research Institute, Wuhan 430074, China;
2. Wind Engineering Research Center of Hunan University, Changsha 410082, China

Received:2016-02-08 Online:2016-05-16 Published:2016-05-16
Supported by:
This work is supported by Science and Technology Project of SGCC (No. GY71-11-045).

摘要/Abstract

摘要： 为研究分裂导线屏蔽效应对体型系数的影响，选取不同型号的导线进行实际导线节段模型风洞试验，分析导线截面、风速、风攻角、分裂数和流场等因素对分裂导线气动特性的影响。试验结果表明：双分裂导线体型系数在偏转临界位置前随风攻角的增大而增大，当风攻角达到临界位置以后，风攻角的增大对双分裂导线体型系数基本无影响；四分裂、六分裂和八分裂导线的体型系数随风攻角的变化呈先增大后减小的趋势，在某个角度有一个体型系数最大值；10%紊流度条件下分裂导线的体型系数均比均匀流场下的结果大10%~15%；紊流场条件下当风速为30 m/s时，试验得到的四分裂、六分裂和八分裂JL/G1A630-45导线的体型系数较设计规范中的取值分别减小了27.60%、24.38%和22.51%。

关键词: 风速, 风攻角, 分裂导线, 风洞试验, 体型系数

Abstract: In order to study the effects of bundle conductor’s aerodynamic interference on shape coefficient, different types conductors are chosen for model wind tunnel test of real conductor section to analyze the factors that affect the shape coefficient, including conductor cross-section, wind speed, wind attack angle, bundle number and flow field. The test result shows that the shape coefficient of double bundle conductors increases with the wind attack angle before deflection critical position. When the wind attack angle reaches the critical position, the increase of wind attack angle has no effect on the shape coefficient of double bundle conductors. The shape coefficient of 4-, 6-, and 8-bundle conductors increases first and then decreases with changing of wind attack angle, with the peak reaching at a certain angle. The bundle conductors shape coefficient under the condition of 10% turbulence intensity is larger than that in the uniform flow field by 10%~15%. In the scenario of 30 m/s wind speed under turbulence, the shape coefficient of 4-, 6-, and 8-bundle conductor JL/G1A-630/45 are respectively reduced by 27.60%, 24.38% and 22.51% compared to the value specified by design code.

Key words: wind speed, wind attack angle, bundle conductor, wind tunnel test, shape coefficient

中图分类号:

TM751

闵绚，牛华伟，文志科，付晶，曾云飞. 分裂导线体型系数试验研究[J]. 中国电力, 2016, 49(5): 171-177.

MIN Xuan, NIU Huawei, WEN Zhike, FU Jing, ZENG Yunfei. Experimental Study on Shape Coefficient of Bundle Conductors[J]. Electric Power, 2016, 49(5): 171-177.

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分裂导线体型系数试验研究

Experimental Study on Shape Coefficient of Bundle Conductors

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分裂导线体型系数试验研究

Experimental Study on Shape Coefficient of Bundle Conductors

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