兩回高壓直流輸電線路交叉跨越時地面合成電場計算
發(fā)布時間：2018-09-10 10:37
【摘要】：高壓直流輸電線路交叉跨越是我國特高壓技術(shù)發(fā)展中可能出現(xiàn)的新問題。為了建設(shè)滿足電磁環(huán)境要求的直流輸電工程,應(yīng)當(dāng)研究相應(yīng)的合成電場預(yù)測方法。由于兩回直流線路相互影響,交叉跨越區(qū)域內(nèi)合成電場呈復(fù)雜的三維分布。本文提出一種兩回直流線路交叉跨越時地面合成電場的計算方法,該方法基于三維通量線法,采用模擬電荷法計算標(biāo)稱電場,利用Deutsch假設(shè)計算合成電場。通過在實驗室內(nèi)搭建直流導(dǎo)線交叉跨越試驗平臺,對計算方法進行驗證。基于該方法,對±800k V線路跨越±500k V線路時地面合成電場的分布進行研究。與一回±500k V線路單獨存在相比,±800k V線路以90°跨越±500k V線路時,地面合成電場峰值基本不變,但分布規(guī)律更為復(fù)雜。
[Abstract]:Cross-crossing of HVDC transmission lines is a new problem in the development of UHV technology in China. In order to construct HVDC transmission project which meets the requirements of electromagnetic environment, the corresponding synthetic electric field prediction method should be studied. Because of the interaction between the two DC lines, the synthetic electric field in the cross-crossing region presents a complex three-dimensional distribution. In this paper, a method for calculating the ground synthetic electric field in the cross crossing of two DC lines is presented. Based on the 3D flux line method, the nominal electric field is calculated by the simulated charge method, and the synthetic electric field is calculated by using the Deutsch hypothesis. The calculation method is verified by setting up a test platform for crossing and crossing of DC conductors in the laboratory. Based on this method, the distribution of the ground synthetic electric field of 鹵800kV line crossing 鹵500kV line is studied. Compared with single 鹵500kV line, when 鹵800kV line spans 鹵500kV line at 90 擄, the peak value of surface synthetic electric field is almost unchanged, but the distribution law is more complex.
【作者單位】： 新能源電力系統(tǒng)國家重點實驗室(華北電力大學(xué));
【基金】：國家自然科學(xué)基金重點項目(51037001) 國家電網(wǎng)公司科技項目(GYB17201400185) 中央高�；究蒲袠I(yè)務(wù)費專項資金(2015XS18)資助
【分類號】：TM75
[Abstract]:Cross-crossing of HVDC transmission lines is a new problem in the development of UHV technology in China. In order to construct HVDC transmission project which meets the requirements of electromagnetic environment, the corresponding synthetic electric field prediction method should be studied. Because of the interaction between the two DC lines, the synthetic electric field in the cross-crossing region presents a complex three-dimensional distribution. In this paper, a method for calculating the ground synthetic electric field in the cross crossing of two DC lines is presented. Based on the 3D flux line method, the nominal electric field is calculated by the simulated charge method, and the synthetic electric field is calculated by using the Deutsch hypothesis. The calculation method is verified by setting up a test platform for crossing and crossing of DC conductors in the laboratory. Based on this method, the distribution of the ground synthetic electric field of 鹵800kV line crossing 鹵500kV line is studied. Compared with single 鹵500kV line, when 鹵800kV line spans 鹵500kV line at 90 擄, the peak value of surface synthetic electric field is almost unchanged, but the distribution law is more complex.
【作者單位】： 新能源電力系統(tǒng)國家重點實驗室(華北電力大學(xué));
【基金】：國家自然科學(xué)基金重點項目(51037001) 國家電網(wǎng)公司科技項目(GYB17201400185) 中央高�；究蒲袠I(yè)務(wù)費專項資金(2015XS18)資助
【分類號】：TM75
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