首页> 外文期刊>Journal of Basic and Applied Physics >Optimal Kernel Parameters of Smooth-Windowed Wigner-Ville Distribution for Power Quality Analysis
【24h】

Optimal Kernel Parameters of Smooth-Windowed Wigner-Ville Distribution for Power Quality Analysis

机译:电能质量分析的平滑窗口Wigner-Ville分布的最佳内核参数

获取原文
           

摘要

Bilinear time-frequency distributions (TFDs) are developed to represent time-varying signal jointly in time frequency representation (TFR). The TFDs offer a good time and frequency resolution, are appropriate to analyze power quality signals that consist of magnitude variation and multiple frequencies. However, the TFD suffers from cross-terms interferences because of their bilinear structures. In this paper, smooth-windowed Wigner-Ville distribution (SWWVD) is used to analyze power quality signals. The power quality signals are swell, sag, interruption, harmonic, interharmonic and transient. To get an accurate TFR, the parameters of the separable kernel are estimated from the signal. A set of performance measures are defined and used to compare the TFR for various kernel parameters. The comparison shows the signals with different parameters require different kernel settings in order to get the optimal TFR.
机译:发展了双线性时频分布(TFD),以时频表示(TFR)共同表示时变信号。 TFD提供了良好的时间和频率分辨率,适用于分析由幅度变化和多个频率组成的电能质量信号。但是,TFD由于其双线性结构而受到交叉项干扰。在本文中,使用平滑窗口Wigner-Ville分布(SWWVD)分析电能质量信号。电能质量信号为骤升,骤降,中断,谐波,间谐波和瞬变。为了获得准确的TFR,可根据信号估计可分离内核的参数。定义了一组性能指标,用于比较各种内核参数的TFR。比较显示,具有不同参数的信号需要不同的内核设置才能获得最佳的TFR。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号