Volume 36 Issue 4
Apr.  2010
Turn off MathJax
Article Contents
Wu Jing, Jin Haibin. Spectral interpolation measurement algorithm of high accuracy on signals in power network[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(4): 495-499. (in Chinese)
Citation: Wu Jing, Jin Haibin. Spectral interpolation measurement algorithm of high accuracy on signals in power network[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(4): 495-499. (in Chinese)

Spectral interpolation measurement algorithm of high accuracy on signals in power network

  • Received Date: 02 Jul 2009
  • Publish Date: 30 Apr 2010
  • In the condition of asynchronous sampling, the long-range spectral leakages, short-range spectral leakages and negative frequency spectral leakages will be caused by using Fourier transforms to analyze the harmonics in power network. To improve the measurement accuracy, the spectrum leakage error expressions were derived. For power frequency alternating current signals, a new error correction algorithm based on interpolation was presented to eliminate both of the short-range spectral leakage errors and the negative frequency spectral leakage errors at the same time. Compared with the previous interpolation algorithms, the simulations and practical measurements show the new algorithm need not weight the samples by special windows and can measure out the accurate frequency, amplitude and phase of the signals even if the asynchronous sampling is very serious. It is applicable for the precise measurement fields requiring a higher accuracy.

     

  • loading
  • [1] 刘琼章,张征平,陈艳峰.电力信号相位差测量方法之探讨[J].电测与仪表,2004,41(6):17-20 Liu Qiongzhang,Zhang Zhengping,Chen Yanfeng.A discussion about the measurement methods of power signals phase difference [J].Electrical Measurement & Instrumentation,2004,41(6):17-20(in Chinese) [2] 吴静,赵伟.适用于非同步采样的相位差准确测量方法[J].电网技术,2006,30(7):73-76 Wu Jing,Zhao Wei.A new accurate measuring method of phase difference suitable for asynchronous sampling[J].Power System Technology,2006,30(7):73-76(in Chinese) [3] Jain V K,Collins W L,Davis D C.High-accuracy analog measurements via interpolated FFT[J].IEEE Trans on Instrum Meas,1979,28(2):113-121 [4] Santamaria-Caballero I,Pantaleon-Prieto C J,Ibanez-Diaz J,et al.Improved procedures for estimating amplitudes and phases of harmonics with application to vibration analysis[J].IEEE Trans on Instrum Meas,1998,47(1):209-214 [5] 张伏生,耿中行,葛耀中.电力系统谐波分析的高精度FFT算法[J].中国电机工程学报,1999,19(3):63-66 Zhang Fusheng,Geng Zhongxing,Ge Yaozhong.FFT algorithm with high accuracy for harmonic analysis in power system[J].Proceedings of the CSEE,1999,19(3):63-66(in Chinese) [6] 庞浩,李东霞,俎云霄,等.应用FFT进行电力系统谐波分析的改进算法[J].中国电机工程学报,2003,23(6):50-54 Pang Hao,Li Dongxia,Zu Yunxiao,et al.An improved algorithm for harmonic analysis of power system using FFT technique[J].Proceedings of the CSEE,2003,23(6):50-54(in Chinese) [7] 江亚群,何怡刚.周期信号相位差的高精度数字测量[J].电工技术学报,2006,21(11):116-120 Jiang Yaqun,He Yigang.High-accuracy phase difference estimation between same frequency components in two periodic signals[J].Transactions of China electrotechnical Society,2006,21(11):116-120(in Chinese)
  • 加载中

Catalog

    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

    Article Metrics

    Article views(2867) PDF downloads(1668) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return