Detecting with PMUs the onset of voltage instability caused by a large disturbance

Glavic, Mevludin; Van Cutsem, Thierry

doi:10.1109/PES.2008.4596308

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Detecting with PMUs the onset of voltage instability caused by a large disturbance

Glavic, Mevludin; Van Cutsem, Thierry

2008 • In Proc. IEEE PES General Meeting

Peer reviewed

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https://hdl.handle.net/2268/3196

DOI
10.1109/PES.2008.4596308

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Keywords :

Long-term voltage stability; instability detection; phasor measurement units; sensitivity analysis; wide-area monitoring

Abstract :

[en] This paper deals with long-term voltage instability triggered by the outage of transmission or generation equipments. It is shown how the onset of voltage instability could be detected in real-time from post-disturbance bus voltages provided by Phasor Measurement Units (PMUs), assuming observability of the whole region prone to voltage instability. An extended set of equilibrium equations is fitted to the measurements and the change in sign of sensitivities is onitored. The latter are easily computed even for a large system. The important effects of overexcitation limiters and load tap changers are taken into account. The approach is illustrated on a 52-bus 20-machine system, where PMU outputs are simulated from detailed time simulation.

Disciplines :

Electrical & electronics engineering

Author, co-author :

Glavic, Mevludin

Van Cutsem, Thierry ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation

Language :

English

Title :

Detecting with PMUs the onset of voltage instability caused by a large disturbance

Publication date :

July 2008

Event name :

Power and Energy Society General Meeting

Event organizer :

IEEE

Event place :

Pittsburgh, United States

Event date :

du 20 juillet 2008 au 24 juillet 2008

By request :

Yes

Audience :

International

Main work title :

Proc. IEEE PES General Meeting

Peer reviewed :

Peer reviewed

Additional URL :

http://ieeexplore.ieee.org/Xplore/guesthome.jsp

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique

Commentary :

(c)2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

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since 31 December 2008

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