A modified least mean square algorithm for adaptive frequency estimation in power systems

Author

Barbosa, Daniel ; Monaro, Renato Machado ; Coury, Denis Vinicius ; Oleskovicz, Mario

Author_Institution

Dept. of Electr. Eng., Univ. of Sao Paulo, Sao Carlos

fYear

2008

fDate

20-24 July 2008

Firstpage

1

Lastpage

6

Abstract

This research presents a method for frequency estimation in power systems using an adaptive filter based on the least mean square algorithm (LMS). In order to analyze a power system, three-phase voltages were converted into a complex signal applying alphabeta-transform an its result was used in the adaptive filtering algorithm. The computing simulations were carried out using the ATP software. Four different situations were created for the performance analysis of the proposed methodology. The results were compared to a commercial relay for validation, showing the advantages of the new method.

Keywords

adaptive filters; frequency estimation; least mean squares methods; power system protection; transforms; adaptive filter; adaptive frequency estimation; alphabeta-transform; modified least mean square algorithm; power systems; three-phase voltages; Adaptive filters; Algorithm design and analysis; Frequency estimation; Least mean square algorithms; Least squares approximation; Power system analysis computing; Power system simulation; Power systems; Signal analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE

Conference_Location

Pittsburgh, PA

ISSN

1932-5517

Print_ISBN

978-1-4244-1905-0

Electronic_ISBN

1932-5517

Type

conf

DOI

10.1109/PES.2008.4596771

Filename

4596771