Experimental Study on Self-damping Characteristics of Large Span Transmission Lines

被引：0

作者：

Wang F. ^{[1
]}

Huang Y. ^{[2
]}

Chen C. ^{[1
]}

Zhao Q. ^{[2
]}

Bai X. ^{[2
]}

机构：

[1] Hubei Key Laboratory of Disaster Prevention and Mitigation (China Three Gorges University), Yichang, 443002, Hubei Province

[2] Central Southern China Electric Power Design Institute Co., Ltd, Wuhan, 430071, Hubei Province

来源：

Huang, Yucheng (huangyucheng@csepdi.com) | 2018年 / Chinese Society for Electrical Engineering卷 / 38期

基金：

中国国家自然科学基金;

关键词：

Large span transmission wire; Self-damping characteristics; Simulation test; Steel core aluminum alloy wire;

D O I：

10.13334/j.0258-8013.pcsee.172482

中图分类号：

学科分类号：

摘要：

It is the key issue for anti-vibration of the large span transmission lines to accurately grasp the self-damping characteristics of the conductor. Based on the balance principle of conductor aeolian vibration, the calculation formula of self-damping power of transmission lines was proposed. Considering the wire stiffness proportional damping effect, Aeolian vibration mechanics model of large span transmission conductor was established under the self-damping conditions. The vibration equation was solved by the method of separation of variables to obtain the modal displacement. Taking the ultrahigh strength steel cored aluminum strand AACSR/EST- 500/280 as the example, breeze excitation force was simulated by electromagnetic vibration exciter, and wire vibration data was collected using noncontact eddy current sensor, which test self-damping power curve. Test results were compared with the theory. On this basis, the influence of running tension and bending rigidity was studied on the self-damping energy dissipation of long span transmission lines. The results show that the theoretical calculation results of conductor self- damping agree well with the experimental data,and verify the correctness of the theoretical formula of self-damping; With the increase of the wire tension, conductor self-damping power decreases, the amplitude of the wire increases; the greater the bending stiffness of wire material, conductor self-damping energy increases, the amplitude of the wire decreases. © 2018 Chin. Soc. for Elec. Eng.

引用

页码：5646 / 5652

页数：6

共 18 条

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