A method for damping oscillations in a power grid is provided. A damping vector (9) targeted at a position of a damping entity (11) and referencing a common reference time frame (4) is generated, based on an identified oscillation in the power grid, the damping vector (9) specifying a frequency, a phase angle and an amplitude. The damping vector (9) is provided to the damping entity (11), and the damping entity (11) reconstructs an oscillation signal corresponding to the oscillation in the power grid, based on the damping vector (9) and applying the common reference time frame (4). The damping entity (11) supplies and/or consumes active and/or reactive power to/from the power grid in accordance with the reconstructed oscillation signal, thus causing damping of the oscillation in the power grid.

Methods for detecting power system events in an electrical power system. An example method comprises determining a signal envelope for each of at least first and second power system signals and performing density-based spatial clustering of a series of points formed by combining respective values of the signal envelopes for at least the first and second power system signals. The example method further comprises detecting one or more power system events by identifying outlier points or groups of points in the spatial clustering. Some methods may further comprise automatically classifying power system events by collecting a data set comprising, for each detected power system event, power system signal features corresponding to the detected power system event, and classifying each of the detected power system events using the data set and a machine-learning-based classification algorithm, where said classifying comprises determining a classification label from among two or more predetermined classification labels.