...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electric power systems research >Analytic Mode Decomposition and Windowed Three-Point Interpolated Chirp-Z Transform for Voltage Flicker Components Detection
【24h】

Analytic Mode Decomposition and Windowed Three-Point Interpolated Chirp-Z Transform for Voltage Flicker Components Detection

机译：分析模式分解和窗口三点插值Chirp-Z用于电压闪烁组件检测的变换

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The extensive development and applications of new energy and power electronics technologies have a significant impact on grid voltage fluctuations and flicker. This paper proposes an accurate method based on analytic mode decomposition (AMD) and windowed three-point interpolated Chirp-Z transform (WICZT) to detect voltage flicker components. The voltage flicker envelope signal is extracted by AMD through the multiplicative result of voltage flicker signal and synchronizing voltage signal to avoid spectrum aliasing, without the analog filter. Then, WICZT based on six-term cosine window is presented to obtain the voltage flicker parameters, which can enhance the frequency resolution and effectively reduce the error caused by the spectral leakage due to the nonsynchronous sampling and constraints of fence effect. Based on the proposed method a voltage flicker parameter detection system is developed and implemented in a PXI platform, using LabVIEW. The simulation and experimental results show that the proposed algorithm can effectively provide accurate detection and analysis in cases of single frequency modulation, multi-frequency modulation, harmonic contamination, fundamental frequency deviation and noise interference.
机译：新能源和电力电子技术的广泛开发和应用对电网电压波动和闪烁具有显着影响。本文提出了一种基于分析模式分解（AMD）和窗口三点内插Chirp-Z变换（WiCZT）的准确方法，以检测电压闪烁组件。通过AMD通过电压闪烁信号的乘法结果和同步电压信号来提取电压闪烁包络信号，以避免频谱混叠，而无需模拟滤波器。然后，提出了基于六级余弦窗口的WiCZT以获得电压闪烁参数，其可以增强频率分辨率并有效地降低由于不同步采样引起的频谱泄漏引起的误差和围栏效应的约束。基于所提出的方法，使用LabVIEW在PXI平台中开发和实现电压闪烁参数检测系统。仿真和实验结果表明，在单频调制，多频调制，谐波污染，基本频率偏差和噪声干扰的情况下，该算法可以有效地提供准确的检测和分析。

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