电力系统保护与控制Issue(11)：51-59,9.
基于IEC标准和全相位谱分析的谐波间谐波检测方法
Harmonic and interharmonic measurement methods based on IEC standard and all-phase spectrum analysis
摘要
Abstract
The new harmonic and interharmonic measurement method with good measuring accuracy for non-stationary signals under synchronous sampling is recommended by IEC 61000-4-7:2002 standard, but it shows poor measuring accuracy under asynchronous sampling, and the results are variable when relative phase of harmonic and interharmonic changes. To make up the deficiency above, this paper presents an advanced method which combines IEC standard framework with all-phase FFT. The method has the excellent property of inhibiting spectral leakage and the feature of phase invariance of all-phase FFT for detecting various typical non-stationary signals, and then is compared with the IEC method and IEC order cosine window method. Simulation results demonstrate that the advanced method is suitable for harmonic and interharmonic measurement for asynchronous sampling, even though the relative phase of harmonic and interharmonic changes, the measurement results are still with high accuracy and keep constant. This work is supported by the Natural Science Foundation Project of CQ CSTC (No. cstcjjA9001).关键词
非同步采样/非平稳信号/全相位谱分析/IEC标准/谐波间谐波检测Key words
asynchronous sampling/nonstationary signals/all-phase spectrum analysis/IEC standard/harmonic and interharmonic detection分类
信息技术与安全科学引用本文复制引用
周林,杜金其,李怀花,廖波,龙崦平,张林强..基于IEC标准和全相位谱分析的谐波间谐波检测方法[J].电力系统保护与控制,2013,(11):51-59,9.基金项目
重庆市自然科学基金(cstcjjA90001) （cstcjjA90001）
