基于Hanning自乘-卷积窗FFT三峰插值修正的电能计量新算法
综合自乘窗和自卷积窗的优势,设计出一种Hanning自乘-卷积窗函数,其具有较优的主瓣和旁瓣性能。基于Hanning自乘-卷积窗FFT三峰插值修正公式、FFT的频移性以及Hanning自乘-卷积窗函数的频谱,拟合推导出信号基波和谐波的通用幅值、相位和频率插值修正公式,并给出了基于该窗函数的一种电能计量新算法。计算精度对比仿真实验以及基波频率波动仿真实验结果表明,基于Hanning自乘-卷积窗函数FFT三峰谱线插值修正的电能计量新算法,具有较高的计算精度和更优的计算稳定性。...
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| Published in | 电力系统保护与控制 Vol. 45; no. 22; pp. 9 - 15 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
北京航天飞行控制中心,北京 100094%清华大学电机系电力系统国家重点实验室,北京,100084
2017
深圳供电局有限公司,广东 深圳,518000%清华大学电机系电力系统国家重点实验室,北京 100084 |
| Subjects | |
| Online Access | Get full text |
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| Summary: | 综合自乘窗和自卷积窗的优势,设计出一种Hanning自乘-卷积窗函数,其具有较优的主瓣和旁瓣性能。基于Hanning自乘-卷积窗FFT三峰插值修正公式、FFT的频移性以及Hanning自乘-卷积窗函数的频谱,拟合推导出信号基波和谐波的通用幅值、相位和频率插值修正公式,并给出了基于该窗函数的一种电能计量新算法。计算精度对比仿真实验以及基波频率波动仿真实验结果表明,基于Hanning自乘-卷积窗函数FFT三峰谱线插值修正的电能计量新算法,具有较高的计算精度和更优的计算稳定性。 |
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| Bibliography: | LIU Tao1, ZHUANG Shuangyong2,3, CHEN Xiaowei1, ZHAO Wei2, ZHANG Zhihan1, HUANG Songling2（1. Shenzhen Power Supply Bureau Limited, Shenzhen 518000, China; 2. State Key Laboratory of Electric Power System ＆ Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; 3. Beijing Aerospace Control Center, Beijing 100094, China） self multiplication-convolution window function; triple-spectrum-line interpolation; harmonic; electric energy measurement; correction formula This paper designs a Hanning self multiplication-convolution window function, which integrates the advantages of the self-multiplication window and self-convolution window and has better main-lobe and side-lobe performance. Based on the formula of self multiplication-convolution window FFT triple-spectrum-line interpolation correction, the frequency shift characteristics of FFT and the spectrum of the Hanning self multiplication-convolution window function, the fundamental and harmonic＇s general amplitude, phase and frequency inte |
| ISSN: | 1674-3415 |
| DOI: | 10.7667/PSPC161886 |