JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

基于DFT输出过零点法的电力系统频率快速估计方法

吴振军 ,  马路遥 ,  邱洪波

downloadPDF
吴振军, 马路遥, 邱洪波. 基于DFT输出过零点法的电力系统频率快速估计方法[J]. 轻工学报, 2018, 33(2): 63-69. doi: 10.3969/j.issn.2096-1553.2018.02.010
引用本文: 吴振军, 马路遥, 邱洪波. 基于DFT输出过零点法的电力系统频率快速估计方法[J]. 轻工学报, 2018, 33(2): 63-69. doi: 10.3969/j.issn.2096-1553.2018.02.010
shu
WU Zhenjun, MA Luyao and QIU Hongbo. Frequency fast estimating method of power system based on zero-crossing method of DFT output[J]. Journal of Light Industry, 2018, 33(2): 63-69. doi: 10.3969/j.issn.2096-1553.2018.02.010
Citation: WU Zhenjun, MA Luyao and QIU Hongbo. Frequency fast estimating method of power system based on zero-crossing method of DFT output[J]. Journal of Light Industry, 2018, 33(2): 63-69. doi: 10.3969/j.issn.2096-1553.2018.02.010
shu

基于DFT输出过零点法的电力系统频率快速估计方法

  • 郑州轻工业学院 电气信息工程学院, 河南 郑州 450002

  • 基金项目: 国家自然科学基金项目（51507156）

  • 中图分类号: TM935.1

Frequency fast estimating method of power system based on zero-crossing method of DFT output

  • College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China

  • Received Date: 2017-12-04
    Available Online: 2018-03-15

    CLC number: TM935.1

  • 摘要: 针对离散傅里叶变换（DFT）频率估计精度不高的问题，提出了基于DFT输出过零点的系统频率快速估计方法.该方法首先对信号进行DFT输出特性分析，然后取DFT实部（或虚部），利用四阶牛顿插值法精确计算过零点时间，由两个过零点的时间差计算系统频率.仿真分析与实验验证的结果表明，该方法具有较高的频率估计精度，受谐波干扰小，且只需1.78个周波即可实现频率估计，适用于电力系统对实时性要求较高的实际工况.
    Abstract: Aiming at the low accuracy of discrete fourier transform (DFT) frequency estimation,a new fast detection method was proposed based on DFT output zero-crossing.The DFT output characteristics of the signal were analyzed firstly.The zero-crossing time of the DFT real part (or imaginary) was calculated accurately by using the fourth order Newton interpolation method.The system frequency could be obtained by the time difference between two zero-crossing points.The results of simulation analysis and experimental verification showed that the method had higher frequency estimation accuracy and less harmonic disturbance, and only needed 1.78 cycles to achieve frequency estimation, which was suitable for power system with real time requirement.
    1. [1]

      磨少清,李啸骢.一种高精度的改进傅里叶测频算法[J].电力系统自动化,2003,27(12):48.

    2. [2]

      ABDOLLAHI A,MATINFAR F.Frequency estimation:A least squares new approach[J].IEEE Transactions on Power Delivery,2011,26(2):790.

    3. [3]

      Dos SANTOS E M,NETO J P J,MARCHESAN G,et al.Power system frequency estimation using morphological prediction of Clarke components[J].Electric Power Systems Research,2015,122:208.

    4. [4]

      RAWAT T K,Parthasarathy H.A continuous-time least mean-phase adaptive filter for power system frequency estimation[J].Electrical Power and Energy Systems,2009,31:111.

    5. [5]

      BEGOVIC M M,DJURIC P M,DUNLAP S,et al.Frequency tracking in power networks in the presence of harmonics[J].IEEE Transactions on Power Delivery,1993,6(2):480.

    6. [6]

      ZHANG P,XUE H,YANG R G.Shifting window average method for accurate frequency measurement in power systems[J].IEEE Transactions on Power Delivery,2011,26(4):2887.

    7. [7]

      WANG M H,SUN Y Z.A practical,precise method for frequency tracking and phasor estimation[J].IEEE Transactions on Power Delivery,2004,19(4):1547.

    8. [8]

      De CARVALHO J R,DUQUE C A,LIMA M A A,et al.A novel DFT-based method for spectral analysis under time-varying frequency conditions[J].Electric Power Systems Research,2014,108:74.

    9. [9]

      WEN H,GUO S Y,TENG Z S,et al.Frequency estimation of distorted and noisy signals in power systems by FFT-based approach[J].IEEE Transactions on Power systems,2014,29(2):765.

    10. [10]

      张政,温和,黎福海,等.多水平集单周期电力系统频率测量方法及应用[J].电工技术学报,2017,32(7):119.

    11. [11]

      赵庆生,谢运华,郭贺宏,等.过零检测和曲线拟合的电力系统频率算法[J].电力系统及其自动化,2017,29(2):21.

    12. [12]

      李军,王越超.一种基于幅值调制的新型电力系统正弦频率测量方法[J].电工技术学报,2015,30(7):144.

    13. [13]

      ZHOU F,HUANG Z Y,ZHAO C Y,et al.Time-domain quasi-synchronous sampling algorithm for harmonic analysis based on Newton's interpolation[J].IEEE Transactions on Instrumentation and Measurement,2011,60(8):2804.

    1. [1]

      刘广超 , 邓莎 , 高峄涵 , 吴涛 , 邓锐杰 . 加热卷烟辊压法薄片丝吸湿性影响因素研究. 轻工学报, 2024, 39(5): 109-117. doi: 10.12187/2024.05.013

  • 加载中
WeChat 点击查看大图
计量
  • PDF下载量:  27
  • 文章访问数:  890
  • 引证文献数: 0
文章相关
  • 收稿日期:  2017-12-04
  • 刊出日期:  2018-03-15
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索
吴振军, 马路遥, 邱洪波. 基于DFT输出过零点法的电力系统频率快速估计方法[J]. 轻工学报, 2018, 33(2): 63-69. doi: 10.3969/j.issn.2096-1553.2018.02.010
引用本文: 吴振军, 马路遥, 邱洪波. 基于DFT输出过零点法的电力系统频率快速估计方法[J]. 轻工学报, 2018, 33(2): 63-69. doi: 10.3969/j.issn.2096-1553.2018.02.010
shu
WU Zhenjun, MA Luyao and QIU Hongbo. Frequency fast estimating method of power system based on zero-crossing method of DFT output[J]. Journal of Light Industry, 2018, 33(2): 63-69. doi: 10.3969/j.issn.2096-1553.2018.02.010
Citation: WU Zhenjun, MA Luyao and QIU Hongbo. Frequency fast estimating method of power system based on zero-crossing method of DFT output[J]. Journal of Light Industry, 2018, 33(2): 63-69. doi: 10.3969/j.issn.2096-1553.2018.02.010
shu

基于DFT输出过零点法的电力系统频率快速估计方法

  • 郑州轻工业学院 电气信息工程学院, 河南 郑州 450002
  • 收稿日期: 2017-12-04
  • 网络出版日期: 2018-03-15
基金项目:  国家自然科学基金项目（51507156）

摘要: 针对离散傅里叶变换（DFT）频率估计精度不高的问题，提出了基于DFT输出过零点的系统频率快速估计方法.该方法首先对信号进行DFT输出特性分析，然后取DFT实部（或虚部），利用四阶牛顿插值法精确计算过零点时间，由两个过零点的时间差计算系统频率.仿真分析与实验验证的结果表明，该方法具有较高的频率估计精度，受谐波干扰小，且只需1.78个周波即可实现频率估计，适用于电力系统对实时性要求较高的实际工况.

English Abstract

参考文献 (13) 相关文章 (1)

目录

/

返回文章

网站版权 © 轻工学报编辑部

地址：河南省郑州市科学大道136号邮编：450001

本系统由北京仁和汇智信息技术有限公司开发 技术支持： info@rhhz.net