Ernst, Damien[Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Smart grids >]
Proceedings of the Second IEEE International Conference on Smart Grid Communications (IEEE SmartGridComm)
Second IEEE International Conference on Smart Grid Communications (IEEE SmartGridComm)
October 17-20, 2011
[en] power systems ; loss of synchronism ; model predictive control
[en] This paper addresses the problem of HVDC control using real-time information to avoid loss of synchronism phenomena in power systems. It proposes a discrete-time control strategy based on model predictive control, which solves at every time step an open-loop optimal-control problem using an A* event-tree search. Different optimisation criteria based on transient stability indices are compared. The paper presents simulations results for two benchmark systems with 9 and 24 buses, respectively, and an embedded HVDC-link. The results show that the control strategy leads to a modulation of the HVDC power ﬂow that improves signiﬁcantly the system’s ability to maintain synchronism in the aftermath of a large disturbance.