基于Hanning自卷积窗和三谱线插值的谐波无功功率测量方法

发布时间：2018-02-10 13:02

本文关键词： Hanning自卷积窗三谱线插值无功功率 Matlab　出处：《电测与仪表》2017年20期 　论文类型：期刊论文

【摘要】：本文提出一种基于Hanning自卷积窗和三谱线插值的谐波无功功率测量方法。根据Budeanu关于无功功率的定义,直接计算无功。计算所需要的谐波频率、幅值和相位则通过采用基于Hanning自卷积窗和三谱线插值的算法得到。Hanning自卷积窗可以有效抑制信号的频谱泄漏。三谱线插值利用幅值最大的谱线及其相邻2根谱线能够确定谱线的准确位置,进而得到谐波的频率、幅值和相角。相对于采用重构的方法,直接计算无功功率的方法要简单。在Matlab平台上的仿真表明,基波频率波动的情况下,本文所提方法得出的结果比基于双谱线插值算法得出的结果具有更高的准确度。
[Abstract]:In this paper, a method of measuring harmonic reactive power based on Hanning self-convolution window and three-spectral line interpolation is proposed. According to the definition of reactive power in Budeanu, the reactive power is directly calculated and the required harmonic frequency is calculated. By using the algorithm based on Hanning self-convolution window and three-line interpolation, the amplitude and phase can effectively suppress the spectrum leakage of the signal. The three-line interpolation utilizes the maximum amplitude of the spectral line and its two adjacent spectral lines energy. Enough to determine the exact location of the line, Furthermore, the frequency, amplitude and phase angle of harmonics are obtained. Compared with the reconstruction method, the direct calculation of reactive power is simple. The simulation on Matlab platform shows that, when the fundamental frequency fluctuates, The results obtained by the proposed method are more accurate than those based on the double spectral line interpolation algorithm.
【作者单位】：云南电网有限责任公司电力科学研究院;华中科技大学电气与电子工程学院强电磁工程与新技术国家重点实验室;
【基金】：国家自然科学基金资助项目(51277080) 云南电网有限责任公司电力科学研究院(D57000KK52140018)
【分类号】：TM933.3

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