NDLI: Real-Time Estimation of Power System Frequency Using Nonlinear Least Squares

Content Provider	IEEE Xplore Digital Library
Author	Chudamani, R. Vasudevan, K. Ramalingam, C.S.
Copyright Year	1986
Abstract	This paper presents a nonlinear least squares method for measuring the power system frequency, wherein the voltage at the measurement point is modeled by using the Fourier series. The estimation of the fundamental frequency is a nonlinear problem in this formulation and is solved by performing a 1-D search over the range of allowed frequency variation. The voltage signal is used for frequency estimation because it is typically less distorted than the line current, resulting in computational efficiency. The robustness of this algorithm with respect to change in various parameters is studied through simulation and the results are validated by hardware implementation using a Virtex IV field-programmable gate array. An application of this algorithm to a shunt active power filter is also presented.
Sponsorship	IEEE Power Engineering Society
Starting Page	1021
Ending Page	1028
Page Count	8
File Size	1098222
File Format	PDF
ISSN	08858977
Volume Number	24
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency estimation Real time systems Power systems Least squares approximation Power system modeling Power system measurements Power measurement Frequency measurement Voltage Least squares methods real-time frequency estimation Nonlinear least squares
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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