Interharmonics Monitoring of Power Network Using Modified Covariance Arithmetic and Virtual Instrument

摘要：

This paper proposes a method of monitoring and analyzing interharmonics in power system based on modified covariance arithmetic and virtual instrument The system consists of sensors, signal conditioning circuits, transfer boards, data acquisition (DAQ) and compute, which the parameters of interharmonics are identified by using the modified covariance arithmetic of AR model, Some essential issues, such as the spectrum distinguishing ability and the antinoise ability of the algorithm, are researched, and the modified covariance arithmetic is applied to virtual instrument by using the MATLAB script node in LabVIEW. The simulation results show that by using the proposed method, the interharmonics near the integer harmonics can be detected accurately with higher anti-noise ability.

关键词： interharmonics modified covariance arithmetic monitoring power spectrum density

作者: Peiyu Wei Jing Li Zhenmei Li

作者单位: Shandong University of Technology,Zibo,255049,China Yiyang Electric Power Bureau,Yiyang,471600,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 2370-2373

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）