Simulation of Fluctuating Wind on EHVAC or UHVDC Transformer Substation’s Lightning Rod

doi:10.11985/2017.12.006

Abstract

Abstract:

A number of lightning conductors mounted on tall structures collapsed in high voltage substations due to wind force in recent years. In this paper, the seasonal wind is measured in the incident substations, and by numerical simulation of random fluctuating wind, the time-distance curve of wind speed at heights of 10m, 13m, 24m, 33m, 42m and 52m of the lighting conductors are given, the simulation spectrum and target spectrum are compared as well. Based on the acquisition of time-distance curve of the wind speed, random fluctuating wind load at various heights of lightning conductors is simulated. By using finite element analysis software targeting the dynamic characteristics of the lightning conductors, it is shown that the lightning conductors’ out-of-plane stiffness is less than that of in-plane, and under the wind load, this type of lightning conductors are more prone to lateral (out-of-plane) vibration following the wind flow direction.

Key words: Lightning conductor, fluctuating wind, self-vibration characteristics, wind load

CLC Number:

TM832

Dong Xinsheng,Li Yongjie,Ma Hanchao,Zhang Dong,Guo Kezhu,He Cheng,Yilizhati· Tuerhan. Simulation of Fluctuating Wind on EHVAC or UHVDC Transformer Substation’s Lightning Rod[J]. Journal of Electrical Engineering, 2017, 12(12): 40-44.

Figures/Tables 9

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Tab

Fig.6

Fig.7

Fig.8

References 12

[1]	祝贺 . 多点Kaimal谱激励输电塔脉动风荷数值模拟[J]. 浙江电力, 2008,5:14-16.
	Zhu He . Numerical simulation of fluctuating wind on transmission tower based on Kaimal spectrum importation metho[J]. Zhejiang Electric Power, 2008,5:14-16.
[2]	吕利民, 陈波, 谢文平 , 等. 大跨度输电线的脉动风荷载模拟[J]. 广东电力, 2015,8(8):106-109.
	Lv Limin, Chen Bo, Xie Wenping , et al. Simulation on impulsive wind load of large span power transmission line[J]. Guangdong Eelectric Power, 2015,8(8):106-109.
[3]	李锦华, 李春祥, 申建红 . 非平稳脉动风速的数值模拟[J]. 振动与冲击, 2009,28(1):18-24.
	Li Jinhua, Li Chunxiang, Shen Jianhong . Numerical simulation of non-stationary fluctuating wind velocity[J]. Journal of Vibration and Shock, 2009,28(1):18-24.
[4]	曹映泓, 项海帆, 周颖 . 大跨度桥梁随机风场的模拟[J]. 土木工程学报, 1998,31(3):72-79.
	Cao Yinghong, Xiang Haifan, Zhou Ying . Simulation of stochastic wind field on long-span bridge[J]. China Civil Engineering Journal, 1998,31(3):72-79.
[5]	周广东, 丁幼亮, 李爱群 , 等. 基于小波变换的非平稳脉动风时变功率谱估计方法研究[J]. 工程力学, 2013,30(3):89-97. doi: 10.6052/j.issn.1000-4750.2011.10.0656
	Zhou Guangdong , Ding YouLiang, Li Aiqun, et al. Estimation method of evolutionary power spectrum for non-stationary fluctuating wind using wavelet transforms[J]. Engineering Mechanics, 2013,30(3):89-97. doi: 10.6052/j.issn.1000-4750.2011.10.0656
[6]	甘进, 洪灶明, 吴卫国 . 脉动风作用下高耸塔结构风振响应研究[J]. 华中科技大学学报(城市科学版), 2009,26(2):76-80.
	Gan Jin, Hong Zaoming, Wu Weiguo . Wind-induced response of high-rise tower structure with fluctuating wind load[J]. (Urban Science Edition), 2009,26(2):76-80.
[7]	邓洪洲, 朱松晔, 陈亦 , 等. 大跨越输电塔线体系风振控制研究[J]. 建筑结构学报, 2003,24(4):60-63.
	Deng Hongzhou, Zhu Songye, Chen Yi , et al. Study on wind-induced vibration control of long span transmission line system[J]. Journal of Building Structures, 2003,24(4):60-63.
[8]	温德超, 刘季林, 王清刚 . 80m高钢烟囱的风振分析[J]. 工程抗震与加固改造, 2004(1):26-29.
	Wen Dechao, Liu Jilin, Wang Qingang . and Retrofitting Wind vibration analysis of 80m high steel chimney[J]. Earthquake Resistant Engineering and Retrofitting, 2004(1):26-29.
[9]	陈波, 瞿伟廉 . 高耸电视塔的动力特性及风振反应分析[J]. 武汉理工大学学报, 2004,26(2):23-36. doi: 10.1007/s11595-011-0160-1
	Chen Bo, Qu Weilian . and Retrofitting Dynamic characteristics and wind-induced response analysis of high-rise TV tower[J]. Journal of Wuhan University of Technology, 2004,26(2):23-36. doi: 10.1007/s11595-011-0160-1
[10]	闵绚, 文志科, 曾云飞 , 等. 脉动风作用下特高压绝缘子串的风偏特性[J]. 中国电力, 2016,49(3):65-71.
	Min Xuan, Wen Zhike, Zeng Yunfei , et al. Characteristics of windage yaw in UHV insulator strings under fluctuating wind[J]. Electric Power, 2016,49(3):65-71.
[11]	李杰, 刘章军 . 随机脉动风场的正交展开方法[J]. 土木工程学报, 2008,41(2):49-53.
	Li Jie, Liu Zhangjun . Orthogonal expansion method of random fields of wind velocity fluctuations[J]. China Civil Engineering Journal, 2008,41(2):49-53.
[12]	刘章军, 李杰 . 脉动风速随机过程的正交展开[J]. 振动工程学报, 2008,21(1):52-56.
	Liu Zhangjun, Li Jie . Orthogonal expansion of stochastic processes for wind velocity[J]. Journal of Vibration Engineering, 2008,21(1):52-56.

振型	固有频率	振动平面
第一阶	1.310 0	YOZ
第二阶	1.660 2	YOZ
第三阶	1.675 9	XOZ
第四阶	1.700 4	YOZ
第五阶	2.611 3	YOZ
第六阶	2.895 6	XOZ
第七阶	3.381 0	XOZ
第八阶	3.916 2	XOZ
第九阶	4.234 1	YOZ
第十阶	4.950 3	YOZ