The aim of this paper is to propose a novel technique for the detection of multicomponent chirp signal and the parameter estimation based on fractional Fourier transform (FRFT). The relationship between the FRFT and t...The aim of this paper is to propose a novel technique for the detection of multicomponent chirp signal and the parameter estimation based on fractional Fourier transform (FRFT). The relationship between the FRFT and the Wigner-Ville distribution (WVD) is investigated and the performance of the new approach is analyzed both in the computation complexity and the resolution in the fractional Fourier domain.展开更多
研究了一种配电网电能质量实时监测分析与治理仿真系统,在准确、快速地检测和分析电能质量的基础上,进一步提出了合理的治理措施并进行了实时仿真分析。系统硬件主要包括由数字信号处理器、A/D采样电路及工控机组成的电能质量在线监测...研究了一种配电网电能质量实时监测分析与治理仿真系统,在准确、快速地检测和分析电能质量的基础上,进一步提出了合理的治理措施并进行了实时仿真分析。系统硬件主要包括由数字信号处理器、A/D采样电路及工控机组成的电能质量在线监测与分析设备;系统软件包括电能质量检测与分析、人机界面展现、支路选择与实时数据显示、电能质量治理仿真、历史数据查询等模块。采用复序列快速傅立叶变换(complex sequence fast Fourier transform,CSFFT)算法进行电能质量参数分析,并提出了一种新的双谐振注入式混合型有源滤波器(hybrid active power filter with double-resonance injection circuit,DIHAPF)的治理方案。广西某110kV变电站的应用效果证明了此方案的先进性和有效性。展开更多
文摘The aim of this paper is to propose a novel technique for the detection of multicomponent chirp signal and the parameter estimation based on fractional Fourier transform (FRFT). The relationship between the FRFT and the Wigner-Ville distribution (WVD) is investigated and the performance of the new approach is analyzed both in the computation complexity and the resolution in the fractional Fourier domain.
文摘研究了一种配电网电能质量实时监测分析与治理仿真系统,在准确、快速地检测和分析电能质量的基础上,进一步提出了合理的治理措施并进行了实时仿真分析。系统硬件主要包括由数字信号处理器、A/D采样电路及工控机组成的电能质量在线监测与分析设备;系统软件包括电能质量检测与分析、人机界面展现、支路选择与实时数据显示、电能质量治理仿真、历史数据查询等模块。采用复序列快速傅立叶变换(complex sequence fast Fourier transform,CSFFT)算法进行电能质量参数分析,并提出了一种新的双谐振注入式混合型有源滤波器(hybrid active power filter with double-resonance injection circuit,DIHAPF)的治理方案。广西某110kV变电站的应用效果证明了此方案的先进性和有效性。
