Systems and methods for generating an inertial response to a change in the voltage of an electrical grid

A method of generating a synthetic inertial response signal using a wind turbine power generation system, the method comprising:

• sampling a grid voltage at a connection point;
• synchronizing, using a control loop of the wind turbine power generation system, a first phase angle of an internal reference voltage to a second phase angle of the grid voltage;
• calculating, using the control loop, an error signal between an inertial response power reference point and a synchronous output power of the wind turbine power generation system;
• and
• applying, responsive to determining that a magnitude of the error signal exceeds a non-zero predefined threshold value, a power output adjustment based on the error signal to the wind turbine power generation system,
• wherein applying the power output adjustment comprises generating control signals to control a power output of a power converter of the wind turbine power generation system.

A wind power system for providing power to an electrical grid, the wind power system comprising:

• one or more wind turbine systems, wherein each wind turbine system includes:
• a rotor,
• a generator coupled to the rotor, and
• a power converter coupling the generator with the electrical grid at a connection point, wherein the power converter is configured to transfer at least a part of the generated power from the wind turbine to the electrical grid;
• and
• a central controller operatively coupled to the one or more wind turbine systems, the central controller configured to:
• generate a synthetic inertial response signal representing a desired inertial response to be provided to the electrical grid by the wind power system;
• and
• apply, responsive to a magnitude of the synthetic inertial response signal exceeding a non-zero predefined threshold value, an adjustment to a power output provided by the one or more wind turbine systems,
• wherein the adjustment to the power output is based on the magnitude of the synthetic inertial response signal, and
• wherein applying the adjustment to the power output comprises generating control signals for the respective power converter of at least one of the one or more wind turbine systems.