The present invention relates to a method for controlling a wind power plant, WPP, comprising a plurality of wind turbine generators, WTGs, connected to an electrical grid, the method comprising: setting a plant power reference (Ptotal) according to an electrical value of the electrical grid; determining an inertia delta power reference (IRdeltaP) required for the WPP to meet a power demand in response to a change in the electrical value; adding the inertia delta power reference and the plant power reference (Ptotal) to form a power reference (Ptotalref); deriving an overboost reference (PrefOB) as the difference between the power reference (Ptotalref) and an available power value; dispatching the power reference (Ptotalref) to each wind turbine generator; dispatching the overboost reference (PrefOB) to each wind turbine generator. The invention also relates to a wind power plant control system and a wind power plant comprising a control system.

Operating a renewable energy generator forming part of a renewable energy power plant. During a fault experienced by a power network: determining an active current set point to enable a reactive current supply boost at the point of connection between the plant and the network, the active current set point being based on a voltage level associated with the generator and on operational characteristics of the generator, plant, power network and/or connecting network; calculating a time period for the reactive current boost, the time period being the maximum time that the active current set point can be maintained for; and controlling the generator during the calculated time period to alter active current output to the determined active current set point, thereby providing the reactive current supply boost at the point of connection.

Provided is a method for operating a wind turbine having a generator and a rotor with rotor blades. The method includes generating electrical power from wind using the generator, using a first part of the generated power as an auxiliary component for supplying auxiliary devices of the turbine used for operating the turbine, where the auxiliary component varies up to a limit. The method includes feeding a second part of the generated electrical power into a grid as a feed-in component, checking the grid for a grid fault that does not allow feeding power into the grid and continuing the operation of the turbine when the fault is detected. The generation of power from wind is reduced to a cut-back power that corresponds to the limit the auxiliary component for operating the auxiliary devices is used from the cut-back power and remaining residual power of the cut-back power is consumed.

A power plant controller (36) is described. The power plant controller (36) controls a power generation system (10) having one or more power generators (12) and an energy storage system (22), and provides a utility grid or transmission system operator with the capability to select the droop response provided by the power generation system. Accordingly, an operator can request a specific generator droop response in order to provide appropriate frequency and grid control services. The power plant controller (36) operates in real time determining one or more power characteristics of the power generation system (10). Based on these characteristics and an indication of a future predicted power output for the power generation system, the power plant controller can take the necessary steps to ensure that the power generation system is capable of responding with the selected droop response, or can advise the operator that a different droop is preferred.

A method to control a wind power installation is provided. The wind power installation includes a generator and a converter. The generator is configured to convert wind power into electrical power and to provide the electrical power from the generator to the converter. The converter is configured to adapt and to provide the electrical power to an electrical grid. The converter is operable to comply with pre-determined grid code requirements during a grid fault. An amount of electrical power, which is present in the wind power installation during the grid fault, is fed into the generator. The generator is operable to convert the respective amount of electrical power into a generator loss.

A method for controlling an electricity distribution grid having a nominal grid voltage, in particular in a critical grid situation, wherein a grid control center is provided for controlling the electricity distribution grid and the electricity distribution grid has at least one control region that comprises a plurality of mutually geographically separate wind farms, comprising the steps of: querying power outputs available from the wind farms, in particular on the basis of a weather forecast; defining a control node within the control region, in particular on the basis of the queried available power out-puts, preferably performed by the grid operator; combining a number of wind farms at the calculated control node to form a wind power plant on the basis of the queried available power outputs and/or a probability distribution of the available power output; controlling the wind power plant, in particular through the grid control center, by way of a wind power plant control unit, such that a required voltage quality and/or frequency stability and/or uninterrupted availability is provided in the control region.

The invention relates to a method for operating a renewable power plant (100) comprising at least one wind turbine (101) and an electrolyzer system (110), the renewable power plant is connectable with a grid (190) via a circuit breaker (123) located at a point of common coupling (PCC), wherein the renewable power plant comprises an internal grid (191) connecting the at least one wind turbine and the electrolyzer system with the point of common coupling, wherein the method comprises detecting a low voltage at any of the at least one wind turbine, and electrically disconnecting the electrolyzer system from the internal grid in response to detecting the low voltage.

A method for controlling a power generating asset connected to an electrical grid includes receiving, via a controller, a grid power limit associated with one or more grid events occurring in the electrical grid. During the one or more grid events, the method includes implementing, via the controller, a power softening function. The power softening function includes increasing a power command of a generator above the grid power limit to avoid large changes in power of the generator, thereby reducing a likelihood of coupling slips of the drivetrain and diverting extra power generated during the one or more grid events to an energy buffer of the power converter based on an energy buffer power command, thereby maintaining a net power generated by the power generating asset within the grid power limit.