Patent ID: 11898539
Assignee: WOBBEN PROPERTIES GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H  Y | IPC F

Claim 0:
1. A method for controlling a wind power system for feeding electrical power generated from wind into an electrical supply grid and for damping low-frequency oscillations in the electrical supply grid, wherein the electrical supply grid has a line voltage with a nominal line frequency, wherein low-frequency oscillations are frequency oscillations that are less than one half of the nominal line frequency, the method comprising:
performing, by a closed control circuit, damping control for damping the low-frequency oscillations, and
controlling, by the damping control, a feed-in of the electrical power into the electrical supply grid using a wind system controller, wherein the closed control circuit includes:
at least a portion of the electrical supply grid,
at least a portion of the wind power system, and
at least a portion of the wind system controller, and

wherein the damping control is configured to mitigate weakly-damped modes in the closed control circuit,
wherein the damping control includes modeling a network characteristic including oscillation properties, wherein modeling the network characteristic includes:
modeling a network that represents at least a portion of the electrical supply grid included in the closed control circuit and accounts for a structure of the at least the portion of the electrical supply grid and consumers and producers connected to the at least the portion of the electrical supply grid; and
modeling a wind system which represents a behavior of the wind power system, wherein modeling the wind system also includes a behavior of the wind system controller, and

wherein the method further comprises:
linearizing the modeled network characteristic to obtain a linearized network characteristic, wherein the linearizing is with respect to at least one working point, and
configuring the damping control based on the linearized network characteristic.