Abstract:
The present invention relates to a method for operating a wind power plant which supplies power to a utility grid in accordance with an active power reference, the wind power plant comprises a plurality of wind turbine generators and a power plant controller arranged to send an active power set point to the wind turbine controller of each of the plurality of wind turbine generators, the method comprises the steps of: operating the wind power plant with an active power reference lower than a nominal active power of the wind power plant by curtailing at least some of the wind turbine generators of the plurality of wind turbine generators, determine a power capability of each of the curtailed wind turbine generators, defining a first group comprising wind turbine generators having a power capability higher than a power capability limit, defining a second group comprising wind turbine generators having a power capability lower than a power capability limit, equalize curtailment of the curtailed wind turbines generators by decreasing the active power set- point for the wind turbines generators in the first group and increasing the active power set-point for the wind turbines generators in the second group. The invention also relates to a wind power plant according to the method.
Abstract:
The present invention relates to a wind power plant having a plurality of wind turbine generators and a power plant controller arranged to communicate with the plurality of wind turbines generators, wherein each wind turbine generator in the plurality of wind turbine generators being related to a wind turbine controller, the wind turbine controller being arranged to control an active power output in its related wind turbine generator according to an active power set point received from the wind power plant controller;the wind power plant supplies power to a utility grid in accordance with an active power reference; such that upon a change in the active power reference the active power set point for each wind turbine generator is changed by a weighting factor; wherein the weighting factor for an increase of the active power reference depends on a relationship between an available active power of each wind turbine generator and an available active power of the wind power plant, and wherein the weighting factor for a decrease of the active power reference depends on a relationship between a produced active power of each wind turbine generator and an aggregated active power output of the wind power plant. The invention also relates to a method for control wind power plant.
Abstract:
The invention relates to a method for controlling power generation from a power plant which comprises power generating units such as wind turbine generators. The power generating units are controllable to produce power dependent on individual power set-points. The method comprises steps of obtaining desired 5 target power set-points for one or more prioritized power generating units, determining final target power set-points for the one or more prioritized power generating units based on the target power set-points and an available power adjustment margin of the power plant which is available for adjustment of the power set-points of the one or more prioritized power generating units, and 10 dispatching the final target power set-points to the prioritized power generating units.
Abstract:
The invention relates to a method for controlling power generation of a power plant which comprises power generating units including a wind turbine. At least one power unit is operated in a non-controlled mode with a non-curtailed power set-point, and at least one other power unit is operated in a controlled 5mode with a curtailed power set-point. Positive capabilities are determined as the difference between the available power and the curtailed power production. The total positive capability is determined as the sum of positive capabilities. The proportion of the power units intended to be operated in the non-controlled mode is determined as a function of the total positive 10capability. Dependent on the difference between the determined proportion and an actual proportion the status from non-controlled mode to controlled mode, or vice versa, of one or more of the power units is changed.
Abstract:
A wind power plant has a plurality of wind turbine generators and a power plant controller arranged to communicate with the plurality of wind turbines generators. Each wind turbine generator has a controller arranged to control an active power output in its respective wind turbine generator according to an active power set point received from the wind power plant controller. A change in the active power reference changes the active power set point for each wind turbine generator by a weighting factor.