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Non-stationary Autoregressive Model for On-line Detection of Inter-area Oscillations in Power Systems

SYSNO ASEP	0353116
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	Non-stationary Autoregressive Model for On-line Detection of Inter-area Oscillations in Power Systems
Author(s)	Sidorov, D. (RU) Panasetsky, D. (RU) Šmídl, Václav (UTIA-B)_{RID, ORCID}
Source Title	Innovative Smart Grid Technologies Conference Europe. - Gothenburg : IEEE, 2010 - ISBN 978-1-4244-8508-6
Pages	s. 1-5
Number of pages	5 s.
Publication form	www - www
Action	Innovative Smart Grid Technologies Conference Europe (ISGT Europe)
Event date	11.10.2010-13.10.2010
VEvent location	Gothenburgh
Country	SE - Sweden
Event type	WRD
Language	eng - English
Country	SE - Sweden
Keywords	power system oscillation ; autoregressive model
Subject RIV	JA - Electronics ; Optoelectronics, Electrical Engineering
R&D Projects	GP102/08/P250 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z10750506 - UTIA-B (2005-2011)
DOI	10.1109/ISGTEUROPE.2010.5638992
Annotation	This paper addresses early on-line detection of inter-area electro-mechanical oscillations in power systems using dynamic data such as currents, voltages and angle differences measured across transmission lines in real time. The main objective is to give the transmission operator qualitative information regarding stability margins. In our approach, the observed signal is modeled with the non-stationary second order autoregressive model. Bayesian estimation of the system is based on the forgetting approach. The stability margins are obtained as posterior probabilities that the poles of the estimated system are unstable. The approach is demonstrated on real retrospective data recorded in a 500 kV power grid and voltage data obtained by numerical simulations.
Workplace	Institute of Information Theory and Automation
Contact	Markéta Votavová, votavova@utia.cas.cz, Tel.: 266 052 201.
Year of Publishing	2011

Number of the records: 1