摘要
电压闪变测量算法研究的主要内容包括包络线的检测和调制分量参数的估计。总结了平方检测法、整流检测法、半波有效值检测法的局限性,分析了基于瞬时有功功率理论的检测法、时频原子法、基于Teager能量算子的检测法等三种新方法,并比较了各个方法的适用条件及优缺点。最后阐述了应用Chirp-Z变换、TLS-ESPRIT算法估计调制分量参数的两种方法。
Envelope detection and parameter estimation of each modulation component are the main parts in meas- urement of voltage flicker. The limitations of the square detection, rectification detection and RMS detection were presen- ted. Other three new detection methods, such as time-frequency atom method were described particularly and their appli- cable conditions, advantages and disadvantages were analyzed by comparison. In the end, Chirp-Z transform and TLS- ESPRIT applied to parameter estimation of the modulation components in voltage flicker were expounded.
出处
《低压电器》
2012年第3期32-36,共5页
Low Voltage Apparatus
关键词
电压闪变
检测
频谱分析
voltage flicker detection spectrum analysis
