An improved Prony method for identifying low frequency oscillations using synchro-phasor measurements

Author

Tripath, P. ; Srivastava, S.C. ; Singh, S.N.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, India

fYear

2009

fDate

27-29 Dec. 2009

Firstpage

1

Lastpage

5

Abstract

This paper deals with implementation of an Improved Prony algorithm, based on median filter, in estimating the low frequency modes of power system oscillations. The signal used for estimating the modes are the power signal obtained from phasor measurement units (PMUs). The comparison of the proposed method has been carried out with conventional Prony based method on a synthetic test signal at different noise levels. Estimation of modes for a 2-area system, using the proposed method, is also carried out in the present work.

Keywords

median filters; oscillations; phase measurement; power system measurement; improved Prony method; low frequency mode estimation; low frequency oscillation identification; median filter; power signal; power system oscillations; synchro-phasor measurement unit; synthetic test signal; Filters; Frequency estimation; Frequency measurement; Phasor measurement units; Power system analysis computing; Power system interconnection; Power system measurements; Power system modeling; Power system stability; Testing; Median filter; Prony method; measurement error; phasor measurement unit (PMU); white noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Systems, 2009. ICPS '09. International Conference on

Conference_Location

Kharagpur

Print_ISBN

978-1-4244-4330-7

Electronic_ISBN

978-1-4244-4331-4

Type

conf

DOI

10.1109/ICPWS.2009.5442754

Filename

5442754