本文選題：有限元法 + 電場計算　； 參考：《電網(wǎng)技術(shù)》2014年11期

【摘要】：變電站作為電力系統(tǒng)中一次設(shè)備和二次設(shè)備最集中的場所,其電磁環(huán)境受到了越來越多的關(guān)注,變電站工頻電場評估日益重要。對變電站元件進(jìn)行三維建模,以導(dǎo)線、絕緣子和均壓環(huán)等元件為研究對象,對其幾何形狀進(jìn)行合理簡化,以降低剖分難度,減少剖分?jǐn)?shù)量,提高計算速度,并采用有限元法對1.5 m高度的路徑進(jìn)行電場計算。以一個500 k V變電站間隔作為算例,將簡化模型與實(shí)際模型的電場數(shù)值進(jìn)行對比,結(jié)果表明距離模型邊緣8 m之內(nèi)時,相對誤差在?7%?11%;距離模型邊緣大于8m時,相對誤差在?3%?5%之間;大于15m時,誤差小于5V/m。簡化模型的計算量為原模型的1/4,簡化效果較好。
[Abstract]:As the most concentrated primary and secondary equipments in power system, the electromagnetic environment of substation is paid more and more attention, and the evaluation of power frequency electric field in substation is becoming more and more important. In order to reduce the difficulty of subdivision, reduce the number of subsections and improve the calculation speed, the geometry of the components of substation is simplified by taking the elements such as conductors, insulators and voltage sharing rings as the research objects. The finite element method is used to calculate the electric field of the 1.5 m height path. Taking a 500kV substation interval as an example, the electric field values of the simplified model and the actual model are compared. The results show that the relative error is 11m when the distance between the model edge and the model edge is 8 m, and when the distance between the model edge and the model edge is more than 8 m, The relative error is between 3% and 5%, and when 15 m, the error is less than 5 V / m. The computational cost of the simplified model is 1 / 4 of that of the original model, and the simplification effect is better.
【作者單位】： 武漢大學(xué)電氣工程學(xué)院;廣東省電力設(shè)計研究院;
【分類號】：TM63

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本文編號：1992222