农业科技与装备
農業科技與裝備
농업과기여장비
AGRICULTURAL SCIENCE & TECHNOLOGY AND EQUIPMENT
2012年
6期
45-47
,共3页
谐波检测%泄露效应%快速傅里叶变换%三阶Hanning卷积窗
諧波檢測%洩露效應%快速傅裏葉變換%三階Hanning捲積窗
해파검측%설로효응%쾌속부리협변환%삼계Hanning권적창
harmonic analysis%leakage effect%fast Fourier transform%3-order Haining convolution window
为减少谐波分析结果的误差，提出一种基于三阶Hanning卷积窗的谐波分析方法。在用公式详细探讨加窗插值算法原理的基础上．利用Matlab仿真试验验证算法的分析精度。MATLAB仿真结果表明，三阶Hanning卷积窗具有优良的频谱抑制性能，可进行电力谐波的高精度检测。
為減少諧波分析結果的誤差，提齣一種基于三階Hanning捲積窗的諧波分析方法。在用公式詳細探討加窗插值算法原理的基礎上．利用Matlab倣真試驗驗證算法的分析精度。MATLAB倣真結果錶明，三階Hanning捲積窗具有優良的頻譜抑製性能，可進行電力諧波的高精度檢測。
위감소해파분석결과적오차，제출일충기우삼계Hanning권적창적해파분석방법。재용공식상세탐토가창삽치산법원리적기출상．이용Matlab방진시험험증산법적분석정도。MATLAB방진결과표명，삼계Hanning권적창구유우량적빈보억제성능，가진행전력해파적고정도검측。
In order to reduce errors in harmonic analysis, a harmonic analysis method based on 3-order haining convolution window is put forward. The interpolating windowed FFT algorithm can effectively reduce spectral leakage and fence effect on harmonic analysis accuracy. This author analyzes the interpolation algorithm in detail. The Matlab simulation results show that 3-order Hanning convolution window has excellent spectrum inhibition performance, suitable for power harmonic detection with high precision, and with the existing windowed interpolation algorithm, the precision is improved obviously.
