發(fā)布時間：2019-04-28 11:41

【摘要】：隨著我國經(jīng)濟(jì)的快速發(fā)展和人民生活水平的不斷提高，特高壓輸電系統(tǒng)的建設(shè)和研究成為我國電力工業(yè)的當(dāng)務(wù)之急。當(dāng)電壓等級發(fā)展到特高壓階段，輸電線路工頻電磁場強度也將隨著增大，引起電磁兼容性或電氣安全性問題，對動、植物和人體也可能造成影響。為了滿足電磁環(huán)境控制要求和優(yōu)化電網(wǎng)設(shè)計，需要對特高壓輸電線路的電磁環(huán)境問題進(jìn)行研究。目前我國特高壓輸電線路電磁環(huán)境問題的研究還處于初級階段，需要基于電磁場計算模型和研究成果發(fā)展評估我國特高壓輸電線路電磁環(huán)境的方法。在這樣的背景下，本文利用模擬電荷法對交流特高壓輸電線路主要的電磁環(huán)境工頻電場和工頻磁場的分布情況以及影響因素進(jìn)行了研究。 本文首先以1000kV三相單回路水平排列交流特高壓輸電線路為例，詳細(xì)介紹了交流特高壓輸電線路工頻電場的計算步驟。編程仿真后得到交流特高壓輸電線路距離地面1.5米處的工頻電場的橫向分布規(guī)律。其次，，利用工頻電場的計算模型，分析和總結(jié)特高壓輸電線路工頻電場的主要影響因素。仿真結(jié)果表明，導(dǎo)線分裂間距、相導(dǎo)線之間的距離、輸電線分裂導(dǎo)線數(shù)和輸電線對地高度對工頻電場的分布影響比較明顯，次導(dǎo)線半徑的影響很小。因此可以考慮從影響較大的四個因素上來優(yōu)化設(shè)計特高壓輸電線路，從而減小輸電線路工頻電場強度。第三，在簡化特高壓輸電線路的基礎(chǔ)上，詳細(xì)地介紹了1000kV三相單回路水平排列特高壓交流輸電線路工頻磁場的二維計算模型，編程仿真后得到特高壓交流輸電線距離地面1.5米處的工頻磁場橫向分布規(guī)律。利用計算模型研究工頻磁場的影響因素，仿真結(jié)果表明，減小輸電線各相之間的距離和輸電線中的電流以及增大導(dǎo)線的對地高度都可以使輸電線路下方的工頻磁場減小。
[Abstract]:With the rapid development of China's economy and the continuous improvement of people's living standards, the construction and research of UHV transmission system has become an urgent task for China's electric power industry. When the voltage level develops to the ultra-high voltage stage, the power-frequency electromagnetic field intensity of the transmission line will increase, which will cause electromagnetic compatibility or electrical safety problems, and may also affect the animal, plant and human body. In order to meet the requirements of electromagnetic environment control and optimize the design of power grid, it is necessary to study the electromagnetic environment of UHV transmission lines. At present, the research on the electromagnetic environment of UHV transmission lines in China is still in its infancy. It is necessary to develop a method to evaluate the electromagnetic environment of UHV transmission lines in China based on the electromagnetic field calculation model and research results. Under this background, the distribution of power-frequency electric field and power-frequency magnetic field in AC UHV transmission line and its influencing factors are studied by means of simulated charge method in this paper, and the distribution of power-frequency electric field and power-frequency magnetic field in AC UHV transmission line are studied. Taking the 1000kV three-phase single loop horizontal arrangement AC UHV transmission line as an example, the calculation steps of the power frequency electric field of the AC UHV transmission line are introduced in detail in this paper. After programming simulation, the transverse distribution of power frequency electric field of AC UHV transmission line is obtained, which is 1.5 meters away from the ground. Secondly, using the calculation model of power frequency electric field, the main influencing factors of UHV transmission line power frequency electric field are analyzed and summarized. The simulation results show that the distribution of the power frequency electric field is affected by the distance between the phase wires, the number of the split wires and the height of the transmission line to the ground, while the radius of the secondary wire has little effect on the distribution of the power frequency electric field. Therefore, the UHV transmission line can be optimized to reduce the power-frequency electric field intensity of the transmission line by considering the four factors which have a great influence on the UHV transmission line. Thirdly, on the basis of simplifying UHV transmission line, the two-dimensional calculation model of power frequency magnetic field of 1000kV three-phase single loop horizontal arrangement UHV AC transmission line is introduced in detail. After programming simulation, the transverse distribution of power frequency magnetic field of UHV AC transmission line is obtained, which is 1.5 meters away from the ground. The influence factors of the power frequency magnetic field are studied by using the calculation model. The simulation results show that reducing the distance between the phases of the transmission line and the current in the transmission line and increasing the height to the ground of the conductor can reduce the power frequency magnetic field below the transmission line.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM723

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 中國電工技術(shù)學(xué)會特高壓輸變電技術(shù)考察團(tuán);;俄羅斯、烏克蘭超、特高壓輸變電技術(shù)發(fā)展近況[J];電力設(shè)備;2003年02期

2 劉開俊;王怡萍;;中國城市電網(wǎng)發(fā)展現(xiàn)狀與規(guī)劃探討[J];電器工業(yè);2006年11期

3 舒印彪;1000kV交流特高壓輸電技術(shù)的研究與應(yīng)用[J];電網(wǎng)技術(shù);2005年19期

4 張運洲;對我國特高壓輸電規(guī)劃中幾個問題的探討[J];電網(wǎng)技術(shù);2005年19期

5 阮江軍,夏斐,陳志楠,鐘亞;近30年的工頻磁場生物效應(yīng)研究──沒有定論[J];高電壓技術(shù);1999年02期

6 惠建峰;關(guān)志成;劉瑛巖;;各國工頻電磁場的限值及其確定的依據(jù)[J];高電壓技術(shù);2006年04期

7 張廣洲;張業(yè)茂;萬保權(quán);鄔雄;;特高壓同塔雙回線路導(dǎo)線布置的優(yōu)化[J];高電壓技術(shù);2008年09期

8 陸寵惠,萬啟發(fā),谷定燮,胡毅,吳光亞;日本 1000kV 特高壓輸電技術(shù)[J];高電壓技術(shù);1998年02期

9 張章奎;;國內(nèi)外特高壓電網(wǎng)技術(shù)發(fā)展綜述[J];華北電力技術(shù);2006年01期

10 胡白雪,周浩;我國發(fā)展特高壓交流輸電的必要性和可行性[J];能源工程;2005年04期

本文編號：2467597