直流融冰装置零功率试验原理及实际工程试验研究

发布时间：2019-02-15 19:53

【摘要】：目前有关直流融冰装置零功率试验(ZPT)电气特性的相关研究成果较少。为此,采用EMTDC软件对直流融冰装置零功率试验进行深入研究,包括:零功率试验原理、直流电流电压及其谐波特性、交流谐波特性、有功与无功分析、阀电流与阀电压分析、通态电流上升率和断态电压上升率分析等。结果表明:直流融冰装置触发角越小,短路直流电流越大,换流器内部的电压降越大,直流端口电压越低;直流电流特征谐波为12k1(k1=1,2,3,…)次谐波,直流电压谐波为6k2(k2=1,3,5,…)次谐波,且其直流分量很小,且随着触发角的增大,直流分量减小,交流分量增大;融冰装置的有功损耗很小、无功损耗很大,且随着电流的增大,无功损耗成比例增大。
[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，

本文编号：2423645