摘要
对于有效的检测和控制电压闪变来说,检测精密度和有效性是非常重要的。本文提出了一种基于数学形态学滤波和希尔伯特变换的检测方法。通过希尔伯特变换,闪变信号包络可以被提取出来,包含在电压闪变信号中较高频率的谐波和其它噪声可以通过数学形态学滤波器消除。仿真分析结果表明了本方法的可行性、有效性,为电压闪变参数的提取提供了一种新方案。
Precise detection is very important for monitoring and controlling voltage flicker efficiently.This paper proposes a novel detecting method based on Hilbert transform and mathematical morphology filter.By Hilbert transform,the flicker envelope can be extracted while higher harmonics and other noises contained in voltage flicker can be eliminated by mathematical morphology filter.The simulation indicate that the method can extract the parameters of low-magnitude modulated signal from voltage flicker signal easily and effectively,and it is a new way to extract the parameters of low-magnitude modulated signal.
出处
《机电产品开发与创新》
2011年第4期143-144,150,共3页
Development & Innovation of Machinery & Electrical Products
