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

Claim 16:
17. A wind power system, comprising:
a closed control circuit configured to provide damping control for damping low-frequency oscillations, wherein the wind power system is configured to:
feed electrical power generated from wind into an electrical supply grid; and
damp the low-frequency oscillations in the electrical supply grid, wherein the electrical supply grid has a line voltage with a nominal line frequency, and the low-frequency oscillations have a lower frequency than half the nominal line frequency; and

a wind system controller configured to control the feeding of the electrical power into the electrical supply grid, wherein the damping control for damping the low-frequency oscillations controls the feeding of the electrical power into the electrical supply grid using the wind system control, and wherein 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 control,

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 the 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 closed control circuit is based on the modeled network characteristic and being linearized with respect to at least one working point to obtain a linearized network characteristic, and provide the damping control based on the linearized network characteristic.