Quasi steady-state simulation diagnosis using Newton method with optimal multiplier
English
Rousseaux, Patricia[Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Système et modélisation >]
Van Cutsem, Thierry[Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation >]
2006
IEEE PES General Meeting (Montreal)
No
International
1-4244-0493-2
IEEE PES General Meeting
du 18 juin 2006 au 22 juin 2006
IEEE
Montreal
Canada
[en] Long-term dynamics ; voltage stability ; time-domain simulation ; quasi steady-state approximation ; singularity ; Newton method ; line search
[en] This paper deals with the quasi steady-state approximation of the long-term dynamics. This fast time simulation method assumes that the short-term dynamics are stable and can be replaced by their equilibrium equations. When the latter stop having a solution, the simulation undergoes a singularity. This paper proposes a method to identify which component(s) are responsible for the loss of equilibrium. The corresponding equations are identified using the Newton method with optimal multiplier. The method has been validated with respect to full time simulation. Very good results are shown on the Nordic-32 system, in cases where long-term voltage instability triggers loss of synchronism. The proposed method enhances time simulation
at very low computational cost and can also help correcting model and/or operating point errors.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
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