Oscillation Behaviour of the Enlarged UCTE Power System Including the Turkish Power System

Distributed MPC of wide-area electromechanical oscillations of large-scale power systems

“…those related to the fact that he does not account for the behavior of the neighboring areas, but also those that could be related to approximations To this end, we used an additional output feedback term remaining unchanged over the entire prediction horizon, to be added to Eqn (4) so as to correct errors in the prediction of interactions with other areas. The new output equation of subproblem n is: ⎡ ⎢ ⎢ ⎢ ⎣ŷ n [1] y n [2] . .…”

“…Indeed, the characteristics of modern power systems, such as long transmission distances over weak grids, highly variable generation patterns and heavy loading, tend to increase the probability of appearance of sustained wide-area electromechanical oscillations likely to lead to large-scale blackouts [2], [3]. While these oscillations are slow enough to envisage wide-area control approaches, their dynamics are nevertheless beyond the capabilities of human operator based control.…”

A new MPC scheme for damping wide-area electromechanical oscillations in power systems

“…At time t, based on the estimationx(t) of the current system state (obtained from a state estimator), the predicted outputŝ y(t+kδ) =ŷ[k] over the next horizon are obtained by iterating 1 To get the actual system state from WAMS measurements, one normally would need a state estimator, but this is out of the scope of the present paper. Eqn (2) K times by usingx(t) as initial state (we use K = 300 in our simulations, corresponding to Kδ = ΔT = 1.5s): ⎡ ⎢ ⎢ ⎢ ⎣ŷ…”

“…Slow inter-area electromechanical oscillations take on the form of relative rotor motions and sustained power oscillations in transmission lines. Long transmission distances over weak grids, highly variable generation patterns and heavy loading tend to increase the probability of appearance of such oscillations [1], [2]. They can lead to generator outages, line tripping, network splitting and even blackouts [3].…”