1 code implementation • 5 Aug 2021 • Joakim Björk, Daniel Vázquez Pombo, Karl Henrik Johansson
It is shown that the NMP model is useful for designing a controller that coordinates FFR from wind with slow FCR from hydro turbines.
1 code implementation • 7 Jul 2021 • Joakim Björk, Karl Henrik Johansson, Florian Dörfler
To ensure frequency stability in future low-inertia power grids, fast ancillary services such as fast frequency reserves (FFR) have been proposed.
no code implementations • 19 Oct 2020 • Joakim Björk, Karl Henrik Johansson
A decentralized stability criterion is derived for a power system with heterogeneous subsystems.
no code implementations • 8 Nov 2019 • Joakim Björk, Danilo Obradović, Lennart Harnefors, Karl Henrik Johansson
Using a two-machine power system model, it is shown that improved damping of inter-area oscillations must come at the cost of reduced transient stability margins, regardless of the control design method.
