Modal parameter estimation in the presence of non-linearities
Palmer, Edward (2009) Modal parameter estimation in the presence of non-linearities. In 19th Australasian Universities Power Engineering Conference : Sustainable Engergy Technologies and Systems, 27-30 September 2009, University of Adelaide, South Australia.
This paper investigates the use of time-frequency
techniques to assist in the estimation of power system modes
which are resolvable by a Digital Fourier Transform (DFT).
The limitations of linear estimation techniques in the presence of large disturbances which excite system non-linearities, particularly the swing equation non-linearity are shown. Where a nonlinearity manifests itself as time varying modal frequencies the Wigner-Ville Distribution (WVD) is used to describe the variation in modal frequencies and construct a window over which standard linear estimation techniques can be used. The error obtained even in the presence of multiple resolvable modes is better than 2%.
Citation countsare sourced monthly fromand citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science generally from 1980 onwards.
Citations counts from theindexing service can be viewed at the linked Google Scholar™ search.
Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.
|Item Type:||Conference Paper|
|Keywords:||Power System Stability, Modal Parameters, Non-lineaities, Time-frequency Analysis|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Power and Energy Systems Engineering (excl. Renewable Power) (090607)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Past > Schools > School of Engineering Systems
|Copyright Owner:||Copyright 2009 Please consult the authors.|
|Deposited On:||15 Feb 2011 09:35|
|Last Modified:||28 Feb 2013 11:45|
Repository Staff Only: item control page