文档介绍：基于间谐波泄漏的谐波间谐波检测新方法*江维,肖辉,曾林俊,崔永林(长沙理工大学电气与信息工程学院,湖南长沙410114)摘要:在同步采样条件下,间谐波对谐波以及间谐波之间的频谱泄漏是产生检测误差的主要原因。为此,文中提出一种谐波间谐波检测新方法来消除间谐波对谐波的频谱干扰,该方法根据间谐波旁瓣泄漏特点,对谐波邻近的间谐波泄漏谱线进行指数拟合求取间谐波在谐波频点处的泄漏值,进而得到较精确拟谐波信号,然后进行时域采样分离拟谐波信号得到拟间谐波信号。通过对频率相近的间谐波采用补零法进行频段划分,各频段进行加窗插值后得到较精确间谐波参数。最后,算例仿真误差结果验证了该方法的有效性。关键词:频谱泄漏;快速傅里叶变换;指数拟合;补零;加窗插值中图分类号:TM93文献标识码:B文章编号:1001-1390(2017)00-0000-00NewmethodofHarmonicharmonicandInterinter-harmonicDetectiondetectionNewMethodBasedbasedonInterinter-harmonicLeakageleakageJiangWei,,XiaoHui,,ZengLinjun,,CuiYonglin(CollegeofElectricalandInformationEngineering,ChangshaUniversityofScienceandTechnolgyTechnology,Changsha410114,China,China)Abstract::Insynchronoussamplingconditions,thespectrumleakageoftheinter-harmonicandinter-,anewcalculationmethodwasproposedtoeliminatetheinterferencebetweenharmonicandinter-,bymeaningofexponentialfittingtoestimatetheleakagevalueoftheinter--harmonicsignalisobtainedbyseparatingthequasiharmonicsignalthroughthetime--harmonicsoffrequencyrelativelynearbydividethefrequencybandsbythenullmethod,andforeachfrequencyband,::spectrumleakage,fastfourierFouriertransfor