A Variable N Synchronous Sampling Method for Grid Aperiodic Harmonic Detection and Analysis

Author

Zheng, Hui ; Chen, Zhao ; Peng, Dongkai ; Tang, Tianhao

Author_Institution

Inst. of Electr. Drives & Control Syst., Shanghai Maritime Univ., Shanghai, China

fYear

2010

fDate

26-27 June 2010

Firstpage

42

Lastpage

45

Abstract

This paper proposed a new AC signal detection method based on variable N synchronous sampling to solve the problems on the harmonic detection and analysis of periodic sin waveform in power grid. Comparing with the traditional fixed N synchronous sampling detection in which the number of sampled data is constant in a period, the key difference of the new method is that the period of sampling points as an unknown variable N, to suit for signal detection in the actual situation. Through the acquisition processing and analysis of data detected, the entire period of synchronous sampling could be obtained to overcome the effects of spectral leakage and fence effect.

Keywords

data analysis; discrete Fourier transforms; harmonic analysis; power grids; power system harmonics; sampling methods; signal detection; AC signal detection method; acquisition processing; data analysis; discrete Fourier transform; fence effect; fixed N synchronous sampling detection; grid aperiodic harmonic detection; harmonic analysis; periodic sine waveform; power grid; spectral leakage effect; variable N synchronous sampling method; aperiodic; discrete Fourier transform; frequency analysis; power grid harmonics; signal detection; synchronous sampling;

fLanguage

English

Publisher

ieee

Conference_Titel

Future Power and Energy Engineering (ICFPEE), 2010 International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4244-7378-6

Electronic_ISBN

978-1-4244-7379-3

Type

conf

DOI

10.1109/ICFPEE.2010.18

Filename

5663339