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  本文選題：分裂導(dǎo)線 + 次檔距振蕩��； 參考：《華北電力大學(xué)》2017年碩士論文

【摘要】：間隔棒作為一種保持分裂導(dǎo)線之間距離的防護金具,其在檔距上的安裝位置不僅關(guān)系到分裂檔能否滿足線路運行時的電氣、機械條件,而且也會影響其對次檔距振動的抑制作用。本文結(jié)合試驗與理論計算,建立間隔棒優(yōu)化配置模型,優(yōu)化次檔距布置,使各個間隔棒的布置在滿足相關(guān)條件的前提下,能夠最大程度的抑制次檔距振動。首先進行分裂導(dǎo)線次檔距激振試驗:無量綱特性試驗和衰減率試驗。利用無量綱特性試驗,建立次檔距比例系數(shù),該系數(shù)反映出了次檔距內(nèi)導(dǎo)線振動節(jié)點位置與其相鄰次檔距長度之間的關(guān)系;利用衰減率試驗,得出次檔距內(nèi)導(dǎo)線的振幅對數(shù)衰減率與次檔距比例系數(shù)有關(guān),并結(jié)合Hearnshaw試驗數(shù)據(jù)得出衰減率在一定范圍內(nèi)隨著次檔距比例系數(shù)的增大而減小。之后求取間隔棒布置時的約束條件:根據(jù)防鞭擊、防吸附等條件確定最大次檔距;依據(jù)衰減率條件和扭轉(zhuǎn)穩(wěn)定條件確定端次檔距;結(jié)合衰減率條件與失諧比條件確定中間次檔距;依據(jù)整檔防對稱條件設(shè)置兩個端次檔距的長度差等。最后以次檔距比例系數(shù)在一定范圍內(nèi)最小為目標(biāo)函數(shù),以次檔距長度為設(shè)計變量,結(jié)合之前求取的約束條件建立優(yōu)化模型。對某條實際檔距進行間隔棒優(yōu)化布置計算,并與現(xiàn)有間隔棒布置方法進行對比,得出優(yōu)化后的次檔距在滿足各個線路運行條件的前提下,相較原有布置方式,得出優(yōu)化后的間隔棒布置方式對次檔距振動的抑制作用更強。
[Abstract]:The spacer rod is used as a protective tool to keep the distance between the split wires. The installation position of the spacer not only relates to the electrical and mechanical conditions of the split shaft, but also to the electrical and mechanical conditions of the line.And it will also affect its effect on the vibration suppression of the secondary distance.Combined with experiment and theoretical calculation, the optimal allocation model of spacer rod is established, and the arrangement of secondary spacing is optimized, so that the arrangement of each spacer can restrain the vibration of subspace as much as possible on the premise of satisfying the relevant conditions.At first, the vibration test of split conductor is carried out: dimensionless characteristic test and attenuation rate test.By using dimensionless characteristic test, the proportional coefficient of secondary distance is established, which reflects the relationship between the position of the vibration node of traverse in the secondary distance and the length of its adjacent secondary distance.It is concluded that the amplitude logarithmic attenuation rate is related to the ratio coefficient of the secondary spacing of traverse, and the attenuation rate decreases with the increase of the ratio coefficient of the secondary distance in a certain range combined with the Hearnshaw test data.After that, the constraint conditions of the spacer rod arrangement are obtained: the maximum spacing is determined according to the conditions of anti-whipping and anti-adsorption, and the terminal spacing is determined according to the condition of attenuation rate and torsional stability.According to the condition of attenuation rate and detuning ratio, the middle distance is determined, and the length difference between the two ends is set according to the anti-symmetry condition of the whole file.Finally, the optimal model is established by taking the minimum of the ratio coefficient of the secondary distance in a certain range as the objective function and the length of the secondary distance as the design variable.The optimum layout of spacer bar is calculated for a real spacer, and compared with the existing spacer arrangement method, the optimized secondary spacing is compared with the original layout under the premise of satisfying the operating conditions of each line.It is concluded that the optimized spacer layout has a stronger effect on the vibration suppression of the secondary spacing.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM75

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