本文選題：輸電塔線耦聯(lián)體系 + 仿真找形�。� 參考：《遼寧工程技術(shù)大學(xué)》2014年碩士論文

【摘要】：輸電塔線體系的作用是傳輸和分配電力,確保塔線體系的安全運(yùn)行有著十分重要的意義。塔線體系跨度大、結(jié)構(gòu)高、整體結(jié)構(gòu)柔性強(qiáng),該結(jié)構(gòu)體系對(duì)風(fēng)荷載作用十分敏感。并且,在風(fēng)荷載作用下導(dǎo)線產(chǎn)生動(dòng)張力與塔架發(fā)生“耦合”現(xiàn)象。因此,對(duì)輸電塔線耦聯(lián)體系的風(fēng)作用研究具有重要的實(shí)際意義。本文在ANSYS環(huán)境中建立了“三塔兩線”塔線耦聯(lián)體系模型,提出導(dǎo)線仿真找形方法,此方法計(jì)算得出導(dǎo)線相關(guān)數(shù)據(jù)與導(dǎo)線規(guī)范找形計(jì)算結(jié)果進(jìn)行對(duì)比分析,從而驗(yàn)證了仿真找形的正確性、簡單性；然后對(duì)單塔和塔線耦聯(lián)體系進(jìn)行了模態(tài)分析,得出各自振動(dòng)頻率及振型特點(diǎn),在振動(dòng)過程中,導(dǎo)線的影響是不可忽略的。在本文中,模擬脈動(dòng)風(fēng)速時(shí)程曲線是在Matlab環(huán)境中進(jìn)行的,并根據(jù)Davenport譜,基于諧波疊加法,進(jìn)而得到輸電塔各高度處的脈動(dòng)風(fēng)速；在此基礎(chǔ)上,模擬得出了不同風(fēng)向角和風(fēng)攻角對(duì)單塔及塔線耦聯(lián)體系作用時(shí)的位移及加速度響應(yīng),將單塔的數(shù)據(jù)與塔線耦聯(lián)體系的數(shù)據(jù)對(duì)比,進(jìn)一步證明了體系的“耦聯(lián)”性；又分析得出最不利風(fēng)向角和風(fēng)攻角,最不利風(fēng)工況是設(shè)計(jì)輸電塔線體系過程中需要考慮的因素之一,因此本文為輸電塔線耦聯(lián)體系下的風(fēng)工程的研究提供了一定理論依據(jù)。
[Abstract]:The function of transmission tower system is to transmit and distribute electric power. It is very important to ensure the safe operation of tower line system. The tower-line system has the advantages of large span, high structure and strong flexibility. The structure system is sensitive to wind load. Furthermore, the dynamic tension of the conductor and the tower are coupled under the wind load. Therefore, it is of great practical significance to study the wind action of transmission tower line coupling system. In this paper, the "three-tower and two-wire" tower line coupling system model is established in ANSYS environment, and a traverse simulation method is proposed. The results of traverse related data and traverse specification are compared and analyzed by this method. The simulation results verify the correctness and simplicity of the simulation, and then the modal analysis of the single tower and tower line coupling system is carried out, and the characteristics of vibration frequency and mode shape are obtained. The influence of the conductor can not be ignored during the vibration process. In this paper, the time history curve of simulated pulsating wind speed is carried out in Matlab environment. According to Davenport spectrum and harmonic superposition method, the fluctuating wind speed at different heights of transmission tower is obtained. The displacement and acceleration responses of different wind direction angles and wind attack angles to single tower and tower line coupling system are obtained by simulation. The data of single tower are compared with those of tower line coupling system, and the "coupling" property of the system is further proved. It is also found that the most unfavorable wind direction angle and wind attack angle, the most unfavorable wind condition is one of the factors to be considered in the design of transmission tower line system, so this paper provides a certain theoretical basis for the study of wind engineering under the transmission tower line coupling system.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU311.3

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