【摘要】：架空輸電線在風(fēng)的作用下經(jīng)常發(fā)生微風(fēng)振動(dòng)現(xiàn)象,可能導(dǎo)致斷股、斷線和桿塔、金具的磨損等事故,必須采取有效的防振措施。目前我國(guó)生產(chǎn)的防振錘性能存在普遍問(wèn)題,對(duì)防振錘的動(dòng)力特性認(rèn)識(shí)不足,缺乏有效、系統(tǒng)的理論研究和計(jì)算機(jī)仿真研究。鑒于此,本文分別建立了防振錘的兩種數(shù)學(xué)模型和ANSYS有限元模型,對(duì)其頻率特性、功率特性和阻尼特性進(jìn)行研究,得出的結(jié)論可為防振錘的結(jié)構(gòu)設(shè)計(jì)和性能改善提供參考。首先,綜述了國(guó)內(nèi)外關(guān)于微風(fēng)振動(dòng)防治和防振錘動(dòng)力特性領(lǐng)域的研究現(xiàn)狀;闡述架空線微風(fēng)振動(dòng)的產(chǎn)生機(jī)理,對(duì)常見(jiàn)的防振錘種類及其發(fā)展歷程進(jìn)行了詳細(xì)的介紹。其次,分別建立了FD、FR和FDZ型防振錘的分布質(zhì)量模型,經(jīng)進(jìn)一步簡(jiǎn)化形成了集中質(zhì)量模型;根據(jù)數(shù)學(xué)模型列出運(yùn)動(dòng)微分方程,進(jìn)一步推導(dǎo)每種模型中固有頻率的計(jì)算方法;建立了防振錘的ANSYS有限元模型進(jìn)行模態(tài)分析。再次,分別使用兩種數(shù)學(xué)模型和有限元模型對(duì)FD-3型防振錘的固有頻率進(jìn)行計(jì)算,并將計(jì)算結(jié)果進(jìn)行對(duì)比分析,論證每種模型的正確性和簡(jiǎn)化處理的合理性;使用集中質(zhì)量模型研究防振錘消耗功率的計(jì)算方法,繪制功率特性曲線,并進(jìn)一步研究了各個(gè)結(jié)構(gòu)參數(shù)對(duì)功率特性的影響。最后,使用分布質(zhì)量模型研究了防振錘的阻尼特性,推導(dǎo)出通過(guò)試驗(yàn)識(shí)別系統(tǒng)各階阻尼比的方法;繪制了FD-3型防振錘的幅頻特性曲線;進(jìn)一步研究了阻尼系數(shù)與激振頻率的關(guān)系,推出通過(guò)試驗(yàn)繪制阻尼特性曲線的方法。
[Abstract]:The phenomenon of wind vibration often occurs in overhead transmission lines under the action of wind, which may lead to accidents such as broken strands, broken wires and wear of pole towers and fittings, so effective measures must be taken to prevent vibration. At present, there are general problems in the performance of anti-vibration hammer produced in our country, and lack of understanding of the dynamic characteristics of the anti-vibration hammer, lack of effective, systematic theoretical research and computer simulation research. In view of this, two kinds of mathematical model and ANSYS finite element model of anti-vibration hammer are established in this paper. The frequency characteristic, power characteristic and damping characteristic are studied, and the conclusion can provide reference for the structural design and performance improvement of anti-vibration hammer. Firstly, this paper summarizes the research status of wind vibration prevention and vibration protection and dynamic characteristics of vibration hammer at home and abroad, expounds the mechanism of overhead wind vibration, and introduces in detail the common anti-vibration hammer types and their development process. Secondly, the distributed mass model of FD,FR and FDZ type anti-vibration hammer is established, and the lumped mass model is formed by further simplification, and the differential equation of motion is listed according to the mathematical model, and the calculation method of natural frequency in each model is further deduced. The ANSYS finite element model of anti-vibration hammer is established for modal analysis. Thirdly, two kinds of mathematical model and finite element model are used to calculate the natural frequency of FD-3 type vibration hammer, and the results are compared and analyzed to prove the correctness of each model and the rationality of simplified treatment. Using the lumped mass model, the calculation method of the power consumption of the anti-hammer is studied, the power characteristic curve is drawn, and the influence of various structural parameters on the power characteristic is further studied. Finally, the damping characteristics of the anti-vibration hammer are studied by using the distributed mass model, the method of identifying the damping ratio of each order of the system is deduced through the experiment, and the amplitude-frequency characteristic curve of the FD-3 type anti-vibration hammer is drawn. Furthermore, the relationship between damping coefficient and exciting frequency is studied, and the method of drawing damping characteristic curve by experiment is proposed.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM752

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 羅嘯宇;張宜生;謝文平;;防振錘性能檢測(cè)評(píng)估系統(tǒng)的研究及應(yīng)用[J];廣東電力;2015年12期

2 劉習(xí)軍;周安琪;劉鵬;張西強(qiáng);李想;相林杰;;架空輸電線防振錘阻尼特性實(shí)驗(yàn)研究[J];實(shí)驗(yàn)力學(xué);2014年05期

3 羅嘯宇;張宜生;謝書(shū)鴻;李新春;徐志磊;劉麗君;;防振錘非線性阻抗實(shí)驗(yàn)研究及參數(shù)識(shí)別[J];振動(dòng)與沖擊;2013年11期

4 王山山;楊振宇;;基礎(chǔ)激勵(lì)測(cè)試結(jié)構(gòu)動(dòng)力特性精度研究[J];實(shí)驗(yàn)力學(xué);2012年06期

5 莫娟;黃廷政;劉勝春;彭宗仁;謝梁;;330kV線路用FR型防振錘結(jié)構(gòu)優(yōu)化[J];電網(wǎng)技術(shù);2011年12期

6 侯景鵬;吳興宏;孫自堂;;防振錘-輸電線體系微風(fēng)振動(dòng)的研究與進(jìn)展[J];合肥工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版);2011年05期

7 侯景鵬;吳興宏;孫自堂;陳靜;;防振錘的動(dòng)力特性分析[J];水電能源科學(xué);2011年02期

8 萬(wàn)建成;周立憲;劉臻;齊翼;展雪萍;張立春;曹道珍;;1000mm~2大截面導(dǎo)線用防振錘設(shè)計(jì)[J];電力建設(shè);2011年01期

9 溫金鵬;楊智春;李斌;孫浩;姚千斌;;材料阻尼測(cè)試方法研究[J];振動(dòng)、測(cè)試與診斷;2008年03期

10 楊立秋;李�；�;高玉竹;;架空輸電線路微風(fēng)振動(dòng)危害分析[J];中國(guó)科技信息;2008年12期

相關(guān)碩士學(xué)位論文 前3條

1 余淑慧;輸電線防振錘系統(tǒng)微風(fēng)振動(dòng)特性研究[D];華北電力大學(xué);2012年

2 徐宏波;架空輸電線防振器的力學(xué)性能分析及安裝設(shè)計(jì)[D];合肥工業(yè)大學(xué);2009年

3 孫林;架空輸電線防振器性能研究及安裝位置的精確計(jì)算[D];合肥工業(yè)大學(xué);2003年

，

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