Naslov
Determining the Limit of Synchronous Generator Dynamic Stability Depending on Electromechanical Oscillation Damping

Autori
Bulić, Neven ; Sumina, Damir ; Švigir, Nikola

Izvornik
Transactions of FAMENA (1333-1124) 34 (2010), 1; 39-50

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, stručni

Ključne riječi
Synchronous generator; Dynamic stability; Stability limit

Sažetak
This paper presents the possibility of determining the dynamic stability limit of a synchronous generator depending on the damping ratio of electromechanical oscillations. In a digital control system in real time a third order system matrix is calculated from the measured signals. The algorithm for determining the system matrix is a recursive least squares algorithm in real time. The matrix eigenvalues for the current operating point are calculated from this system matrix, and based on them, the damping ratio is calculated. The character of electromechanical oscillations changes when the operating points of the synchronous generator are changed. As a result, the system eigenvalues change as well, leading to a change in the damping ratio of electromechanical oscillations. In the synchronous generator capacitive operating area, the dynamic stability limit will be characterized by the occurrence of undamped electromechanical oscillations. This phenomenon is called the system damping loss.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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