TY - GEN
T1 - Application of weighted structured total least squares in identification of power system oscillation modes
AU - Živanović, Rastko
PY - 2007
Y1 - 2007
N2 - In this paper we present a novel method for estimating electromechanical modal parameters from noisy signals recorded during power system disturbances. The method is based on the weighted Structured Total Least Squares (STLS) approach for parametric signal modelling. Compared to Prony's method, the weighted version of STLS method is less sensitive to noise and trend components in recorded signal samples. It is shown through practical examples that the method displays high resolution in parameter estimation for some difficult cases with close modal frequencies, using only short signals recorded by Digital Fault Recorder.
AB - In this paper we present a novel method for estimating electromechanical modal parameters from noisy signals recorded during power system disturbances. The method is based on the weighted Structured Total Least Squares (STLS) approach for parametric signal modelling. Compared to Prony's method, the weighted version of STLS method is less sensitive to noise and trend components in recorded signal samples. It is shown through practical examples that the method displays high resolution in parameter estimation for some difficult cases with close modal frequencies, using only short signals recorded by Digital Fault Recorder.
UR - http://www.scopus.com/inward/record.url?scp=50649108804&partnerID=8YFLogxK
U2 - 10.1109/PESAFR.2007.4498030
DO - 10.1109/PESAFR.2007.4498030
M3 - Conference contribution
AN - SCOPUS:50649108804
SN - 1424414784
SN - 9781424414789
T3 - IEEE PES PowerAfrica 2007 Conference and Exposition, PowerAfrica
BT - IEEE PES PowerAfrica 2007 Conference and Exposition, PowerAfrica
T2 - IEEE PES PowerAfrica 2007 Conference and Exposition, PowerAfrica
Y2 - 16 July 2007 through 20 July 2007
ER -