US 2021/0083479 A1 · SYSTEM AND METHOD FOR CONTROL OF REACTIVE POWER FROM A REACTIVE POWER COMPENSATION DEVICE IN A WIND TURBINE SYSTEM

Abstract

A method for operating a power generation system that supplies real and reactive power to a grid includes receiving a reactive power demand made on the power generation system at an operating state of the power generation system and a grid state. Further, the method includes decoupling reactive power control and voltage control between a generator and a reactive power compensation device so as to reduce an oscillatory response of a reactive power output from the reactive power compensation device and the generator. Moreover, the method includes operating, via a device controller, the reactive power compensation device in a reactive power control mode to generate at least a portion of the reactive power demand.

Claims20

Dependent claims

A method for operating a power generation system that supplies real and reactive power to a grid, the power generation system including a generator coupled with a power conversion assembly and a dedicated reactive power compensation device, the power conversion assembly and the reactive power compensation device comprising a converter controller and a device controller, respectively, the method comprising:

receiving a reactive power demand made on the power generation system at an operating state of the power generation system and a grid state;
decoupling reactive power control and voltage control between the generator and the reactive power compensation device so as to reduce an oscillatory response of a reactive power output from the reactive power compensation device and the generator;
and,
operating, via the device controller, the reactive power compensation device in a reactive power control mode to generate at least a portion of the reactive power demand.

1 more element

A wind turbine system configured to supply real and reactive power to a grid, the wind turbine system comprising:

a wind turbine comprising a rotor, a hub, and a plurality of rotor blades coupled to the hub;
a doubly fed induction generator (DFIG) system coupled to the rotor, the DFIG system comprising a generator coupled to a power conversion assembly with a line side converter (LSC), a rotor side converter (RSC), and a converter controller;
a reactive power compensation device operationally configured with the DFIG system to generate a reactive power, the reactive power compensation device comprising a device controller configured to:
receive a reactive power demand made on the wind turbine system at an operating state of the wind turbine system and a grid state;
and,
decouple reactive power control and voltage control between the generator and the reactive power compensation device so as to reduce an oscillatory response of a reactive power output from the reactive power compensation device and the generator.

3 more elements

receiving a reactive power demand made on the power generation system at an operating state of the power generation system and a grid state;
and,
independently controlling a reactive power of the power generation system and terminal voltage of the generator via separate controllers of the reactive power compensation device and the power conversion assembly, respectively, so as to reduce an oscillatory response of a reactive power output from the reactive power compensation device and the generator.

Dependencies are inferred from the claim text.

System and method for control of reactive power from a reactive power compensation device in a wind turbine system

Life of this patent

System and method for control of reactive power from a reactive power compensation device in a wind turbine system

Life of this patent

Abstract

Claims20