本文選題：輸電線路　切入點：導(dǎo)線　出處：《中國電機工程學(xué)報》2014年S1期

【摘要】：輸電線路覆冰后,將引發(fā)斷線倒塔事故,嚴重威脅電網(wǎng)的安全運行。其覆冰受氣溫、風(fēng)速、水滴直徑和導(dǎo)線結(jié)構(gòu)的影響,為研究這些因素影響導(dǎo)線覆冰的規(guī)律,在導(dǎo)線覆冰理論計算研究的基礎(chǔ)上,利用有限元軟件二次開發(fā)功能,編制了導(dǎo)線覆冰過程中過冷卻水滴碰撞導(dǎo)線的數(shù)值模型,該模型將反饋的兩隨機水滴位置插值到網(wǎng)格節(jié)點上,最終獲得過冷卻水滴局部碰撞位置,實現(xiàn)對導(dǎo)線覆冰過程的模擬。通過對不同覆冰影響因素的計算,總結(jié)了覆冰強度、局部碰撞率與氣溫、風(fēng)速、水滴直徑之間的相互關(guān)系。最后進行了導(dǎo)線覆冰模擬試驗,試驗結(jié)果與數(shù)值計算結(jié)果吻合較好,表明模型正確有效,可用于導(dǎo)線覆冰的預(yù)測。
[Abstract]:After the transmission line is covered with ice, it will lead to the breakdown tower accident, which will seriously threaten the safe operation of the power grid. Its icing is affected by the temperature, wind speed, water droplet diameter and wire structure. In order to study these factors affecting the rule of conductor icing, On the basis of theoretical calculation of conductor icing, the numerical model of supercooling water droplet collision wire during the course of conductor icing is developed by using the secondary development function of finite element software. The model interpolates the feedback two random droplet positions to the grid node and finally obtains the local collision position of the supercooled water droplets, which can simulate the ice process of the conductor. The ice intensity is summarized by calculating the factors affecting the ice coating. The relationship between local collision rate and air temperature, wind speed and water droplet diameter. Finally, the simulation experiment of conductor icing is carried out. The experimental results are in good agreement with the numerical results. It shows that the model is correct and effective, and can be used to predict the ice coating of conductors.
【作者單位】： 中國電力科學(xué)研究院;北京航空航天大學(xué)航空科學(xué)與工程學(xué)院;
【基金】：國家電網(wǎng)公司科技項目(GC1317201200170)~~
【分類號】：TM752

【參考文獻】

相關(guān)期刊論文 前10條

1 李政敏;庾振平;胡琰鋒;;輸電線路覆冰的危害及防護[J];電瓷避雷器;2006年02期

2 趙大樂;姚秀平;紀冬梅;柴國旭;雷一鳴;;高壓輸電線路覆冰問題研究[J];上海電力學(xué)院學(xué)報;2011年01期

3 郭昊;劉沛清;屈秋林;劉勝春;王景朝;邸玉賢;;輸電線霧凇覆冰過程的二維數(shù)值模擬[J];工程力學(xué);2011年05期

4 郭昊;劉沛清;屈秋林;段中U，

本文編號：1697300