Real-Time Estimation of Power System Frequency Using a Three-Level Discrete Fourier Transform Method

Real-Time Estimation of Power System Frequency Using a Three-Level Discrete Fourier Transform Method

This paper proposes a three-level discrete Fourier transform (DFT) method to provide an accurate estimate of power system frequency in real time. The first level decomposes a power system signal into two orthogonal cosine- and sine-filtered signals. The second and third levels are used to determine...

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Bibliographic Details
Main Authors: Soon-Ryul Nam, Seung-Hwa Kang, Sang-Hee Kang
Format: Article
Language:English
Published: MDPI AG 2014-12-01
Series:Energies
Subjects:
amplitude ratio
power system frequency
hardware implementation
real-time estimation
three-level discrete Fourier transform
zero-crossing problem
Online Access:http://www.mdpi.com/1996-1073/8/1/79

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