基于现代谱估计方法的间谐波检测  

Interharmonics measurment using modern spectral estimation method

作　　者：马秉伟[1] 周莉[1] 刁均伟 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]电力设备厂,广东广州510285

出　　处：《继电器》2005年第3期25-27,共3页Relay

摘　　要：电力系统中的间谐波问题日益突出,因此有必要准确地检测间谐波的参数。FFT算法无法在较短的采样时间内精确检测信号中的间谐波和谐波成分,因而提出采用现代谱估计方法检测间谐波,仿真验证了该方法能够在较短的采样时间内准确检测出频率邻近的间谐波成分和多个间谐波分量。The problem of interharmonics in electric power system is becoming increasingly severe. It is necessary to measure the interharmonics exactly. But FFT can not get good results in short sampling time. This paper uses modern spectral estimation method to measure interharmonics and harmonics. The simulation result shows that the approach can accurately measure the interharmonics with adjacent frequency and several interharmonics components of the signal.

关 键 词：间谐波 检测 谱估计 快速傅里叶变换 

分 类 号：TM935[电气工程—电力电子与电力传动]