摘要
研究卷积窗在周期信号高精度谐波分析中的应用,详细分析频谱泄漏效应对测量精度造成的影响。通过数值模拟,比较了四阶卷积窗与其它四项组合余弦窗对谐波参量反演误差的影响。理论分析和数值结果均表明:在电力系统的频偏条件下,使用四阶卷积窗可显著提高谐波参量测量精度。
Application of the convolution windows to high accuracy harmonic analysis of the periodic signals is studied. The effect of the spectral leakage on the errors of harmonic parameters estimation is analyzed. The effect of 4-order Convolution window, Nuttall window, Blackman-Harris window and 4-term Class Ⅲ Rife-Vincent window on the errors of harmonic parameters estimation is compared by simulations. The results show that the precision of harmonic parameters estimation can be greatly improved by 4-order convolution window under the condition of less sampling synchronous deviation.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第12期34-37,共4页
Proceedings of the CSEE
基金
国家自然科学基金项目(69931030)。~~
