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首页> 外文期刊>IEEE transactions on industrial informatics >Frequency Shifting and Filtering Algorithm for Power System Harmonic Estimation
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Frequency Shifting and Filtering Algorithm for Power System Harmonic Estimation

机译：电力系统谐波估计的频移和过滤算法

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摘要

Harmonic estimation plays an important part in harmonic suppression of power system. Due to the normal fluctuation of power frequency, it is difficult to realize synchronous sampling. Consequently, the unavoidable productions, i.e., spectral leakage and picket fence effect, will affect the accuracy of harmonic analysis significantly when using the Fourier transform. To overcome this problem, a novel algorithm for power system harmonic estimation called frequency shifting and filtering (FSF) algorithm is proposed in this paper. A reference signal is at first generated to shift the frequency of the sampled signal. Then the iterative averaging filter is adopted to eliminate the spectral interferences. Finally, accurate estimation of harmonics can be achieved because only interested components are retained. Furthermore, a simplified FSF with much less computational burden is presented by using an equivalent weighting filter. The salient features of the proposed algorithm are validated by the simulations and practical experiments.
机译：谐波估计在电力系统的谐波抑制中起着重要部分。由于功率频率的正常波动，难以实现同步采样。因此，不可避免的制作，即光谱泄漏和剥离围栏效应将在使用傅立叶变换时显着影响谐波分析的准确性。为了克服这个问题，本文提出了一种称为频率移位和滤波（FSF）算法的电力系统谐波估计的新颖算法。首先生成参考信号以移位采样信号的频率。然后采用迭代平均滤波器来消除光谱干扰。最后，可以实现准确的谐波估计，因为只保留了感兴趣的组件。此外，通过使用等效的加权滤波器呈现具有更少计算负担的简化FSF。所提出的算法的突出特征通过模拟和实际实验验证。

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  • 来源
    《IEEE transactions on industrial informatics》 |2019年第3期|1554-1565|共12页
  • 作者

    Shuai Zhikang; Zhang Junhao; Tang Lu; Teng Zhaosheng; Wen He;

  • 作者单位

    Hunan Univ Coll Elect & Informat Engn Changsha 410082 Hunan Peoples R China|Hunan Prov Key Lab Intelligent Elect Measurement Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Elect & Informat Engn Changsha 410082 Hunan Peoples R China|Hunan Prov Key Lab Intelligent Elect Measurement Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Elect & Informat Engn Changsha 410082 Hunan Peoples R China|Hunan Prov Key Lab Intelligent Elect Measurement Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Elect & Informat Engn Changsha 410082 Hunan Peoples R China|Hunan Prov Key Lab Intelligent Elect Measurement Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Elect & Informat Engn Changsha 410082 Hunan Peoples R China|Hunan Prov Key Lab Intelligent Elect Measurement Changsha 410082 Hunan Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Filtering; frequency domain; frequency shifting; harmonic estimation; iteration;

    机译：过滤;频域;频率移位;谐波估计;迭代;

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