0353116 20240103194511.920110104235959.9 10.1109/ISGTEUROPE.2010.5638992 5 s. www cav_un_epca*0353115978-1-4244-8508-61-5GothenburgIEEE2010 power system oscillation autoregressive model cav_un_auth*0263921 Sidorov D. RU cav_un_auth*0267769 Panasetsky D. RU cav_un_auth*0101207 Šmídl Václav Adaptivní systémy Department of Adaptive Systems AS AS UTIA-B Department of Adaptive Systems Ústav teorie informace a automatizace AV ČR, v. v. i. http://library.utia.cas.cz/separaty/2010/AS/smidl-non-stationary autoregressive model for on-line detection of inter-area oscillations in power systems.pdf GP102/08/P250 GA ČR cav_un_auth*0241640 CEZ:AV0Z10750506 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. cav_un_auth*0267770 Innovative Smart Grid Technologies Conference Europe (ISGT Europe) Gothenburgh 11.10.2010-13.10.2010 SE 2011 JA http://hdl.handle.net/11104/0192446 2010 cav_un_epca*0353115 Innovative Smart Grid Technologies Conference Europe 978-1-4244-8508-6 1 5 Gothenburg IEEE 2010