期刊名称：Beni-Suef University Journal of Basic and Applied Sciences
印刷版ISSN：2314-8535
电子版ISSN：2314-8543
出版年度：2014
卷号：3
期号：1
页码：37-44
DOI：10.1016/j.bjbas.2014.02.005
语种：English
出版社：Elsevier
摘要：AbstractHigh-voltage direct current (HVDC) transmission is an efficient technology designed to deliver large amounts of power over long distances. The technology is a key component in the future energy transmission system based on renewable energy sources.The DC lines can carry more much power with two conductors than the power transmitted using an AC lines with three conductors of the same size. For the given power level, a DC line requires simpler and cheaper towers (From economical point of view, already installed towers for AC system can be used). Also reduced conductor sizes and insulator can be used. The power transmission losses also will be reduced to about two-thirds of the comparable AC system. The absence of skin effect with DC is also beneficial in reducing power losses marginally. Due to its fast controllability, HVDC transmission system has full control over transmitted power, an ability to enhance transient and dynamic stability in associated AC networks and can limit fault currents levels in the DC lines.
