【摘要】：目前有關(guān)直流融冰裝置零功率試驗(ZPT)電氣特性的相關(guān)研究成果較少。為此,采用EMTDC軟件對直流融冰裝置零功率試驗進行深入研究,包括:零功率試驗原理、直流電流電壓及其諧波特性、交流諧波特性、有功與無功分析、閥電流與閥電壓分析、通態(tài)電流上升率和斷態(tài)電壓上升率分析等。結(jié)果表明:直流融冰裝置觸發(fā)角越小,短路直流電流越大,換流器內(nèi)部的電壓降越大,直流端口電壓越低;直流電流特征諧波為12k1(k1=1,2,3,…)次諧波,直流電壓諧波為6k2(k2=1,3,5,…)次諧波,且其直流分量很小,且隨著觸發(fā)角的增大,直流分量減小,交流分量增大;融冰裝置的有功損耗很小、無功損耗很大,且隨著電流的增大,無功損耗成比例增大。
[Abstract]:At present, there are few researches on the electrical characteristics of (ZPT) in zero power test of DC ice melting device. Therefore, the zero power test of DC ice melting device is studied by EMTDC software, including the principle of zero power test, DC voltage and its harmonic characteristic, AC harmonic characteristic, active power and reactive power analysis, valve current and valve voltage analysis. Analysis of on state current rise rate and off state voltage rise rate, etc. The results show that the smaller the trigger angle of DC ice melting device, the greater the short-circuit DC current, the larger the voltage drop and the lower the DC port voltage, and the characteristic harmonic of DC current is 12k1. Subharmonics, DC voltage harmonics are 6k2 (k2k1m3k5, 鈥，

本文編號：2423645