新型电力系统下电能质量信号的分数域降噪方法研究

TM93; "双碳"背景下,大量分布式电源接入电网引发电能质量扰动,给电网的稳定运行带来挑战.由于非线性、高速负载的大量集成,新型电力系统中的电能质量扰动呈现出非平稳特性,给降噪处理带来了新困难.针对这一问题,通过分析不同类型电能质量扰动在分数域的能量分布特性,提出了一种改进的基于分数阶傅里叶变换(FRFT)的降噪算法.同时,文章对分数阶最佳变换角度的估计方法进行了讨论,基于信号的分数阶频谱四阶原点矩,利用一维峰值搜索确定最佳变换角度可有效降低计算复杂度.实验结果表明,改进算法对平稳暂态扰动和非平稳暂态扰动均能有效实现降噪并保留暂态扰动的定位信息....

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Published in电测与仪表 Vol. 60; no. 9; pp. 81 - 87
Main Authors 陈蓉, 杨勇, 樊明迪
Format Journal Article
LanguageChinese
Published 苏州大学轨道交通学院,江苏苏州215131 15.09.2023
Subjects
非平稳暂态扰动
non-stationary transient disturbance
电能质量
de-noising
power quality
fractional Fourier transform
分数阶傅里叶变换
降噪
Online AccessGet full text
ISSN1001-1390
DOI10.19753/j.issn1001-1390.2023.09.012

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Abstract TM93; "双碳"背景下,大量分布式电源接入电网引发电能质量扰动,给电网的稳定运行带来挑战.由于非线性、高速负载的大量集成,新型电力系统中的电能质量扰动呈现出非平稳特性,给降噪处理带来了新困难.针对这一问题,通过分析不同类型电能质量扰动在分数域的能量分布特性,提出了一种改进的基于分数阶傅里叶变换(FRFT)的降噪算法.同时,文章对分数阶最佳变换角度的估计方法进行了讨论,基于信号的分数阶频谱四阶原点矩,利用一维峰值搜索确定最佳变换角度可有效降低计算复杂度.实验结果表明,改进算法对平稳暂态扰动和非平稳暂态扰动均能有效实现降噪并保留暂态扰动的定位信息.
AbstractList TM93; "双碳"背景下,大量分布式电源接入电网引发电能质量扰动,给电网的稳定运行带来挑战.由于非线性、高速负载的大量集成,新型电力系统中的电能质量扰动呈现出非平稳特性,给降噪处理带来了新困难.针对这一问题,通过分析不同类型电能质量扰动在分数域的能量分布特性,提出了一种改进的基于分数阶傅里叶变换(FRFT)的降噪算法.同时,文章对分数阶最佳变换角度的估计方法进行了讨论,基于信号的分数阶频谱四阶原点矩,利用一维峰值搜索确定最佳变换角度可有效降低计算复杂度.实验结果表明,改进算法对平稳暂态扰动和非平稳暂态扰动均能有效实现降噪并保留暂态扰动的定位信息.
Author 樊明迪
陈蓉
杨勇
AuthorAffiliation 苏州大学轨道交通学院,江苏苏州215131
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Fan Mingdi
Chen Rong
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Keywords 非平稳暂态扰动
non-stationary transient disturbance
电能质量
de-noising
power quality
fractional Fourier transform
分数阶傅里叶变换
降噪
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Snippet TM93; "双碳"背景下,大量分布式电源接入电网引发电能质量扰动,给电网的稳定运行带来挑战.由于非线性、高速负载的大量集成,新型电力系统中的电能质量扰动呈现出非平稳特性,...
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Title 新型电力系统下电能质量信号的分数域降噪方法研究
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