电力系统间谐波分析  

Study on interharmonic of power system

作　　者：郝江涛[1] 刘念[1] 幸晋渝[1] 薄丽雅[1] 陈卓[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《电力自动化设备》2004年第12期36-39,共4页Electric Power Automation Equipment

摘　　要：间谐波是电力系统中一种特殊的谐波。提出了用离散/快速傅里叶变换分析间谐波时应注意的一些问题,指出如何正确识别间谐波和选择适当的信号采样窗宽度。分析了电力系统中各种间谐波源,包括变频装置、波动负荷、铁磁谐振、同步串级调速装置及感应电动机,阐述了间谐波的各种危害,如波形畸变、灯光闪烁及对测量仪表、电动机、功率因数的影响。Interharmonic is special harmonic in electric power systems. Attention should be paid to some facts in interharmonic analysis using DFT/FFT. Ways to correctly identify interharmonic and select suitable width of signal sampling window are introduced. The interharmonic sources in power system are analyzed,such as converter equipment,fluctuating load,ferro-resonance,synchronous regulator cascade and induction motor. Its harms are expounded,including waveform distortion,light flicker and influences on measuring instrument,motor and power factor.

关 键 词：间谐波 电力系统 来源 危害 

分 类 号：TM711[电气工程—电力系统及自动化]