Patent ID: 9647457
Date: 2017-05-09
CPC Classifications: F03D,F05B,H02J,Y02E

Claim:
1. A control device for damping electrical grid oscillations in a utility grid, where the control device comprises: an input for receiving electrical parameters relating to the utility grid or for receiving a main damping reference signal determined for damping the grid oscillations, a processor for determining at least first and second reference signals from the input for controlling power generation of first and second power generator units connected to the utility grid for delivering power to the utility grid, where the first and second reference signals are determined so that the power delivered to the utility grid by the first and second power generator units in combination enables damping of the grid oscillations, and where the first and second reference signals each comprises an active part for causing a control effect on the respective first and second power generator units and, successively to the active part, a passive part which does not cause a control effect, where the active parts of the first and second reference signals are separated in time.