Abstract:
The invention relates to controlling power generation from a power plant which includes power generating units including at least one wind turbine generator. Based on obtained fatigue levels of the power generating units and a comparison of the obtained fatigue levels of the power generating units with a fatigue level threshold the power set points of the power generating units are adjusted dependent on the fatigue levels and the fatigue level threshold to achieve a levelling of the individual fatigue levels of the power generating units.
Abstract:
The invention relates to a method for correcting deviations of power produced by a power plant which includes at least one wind turbine generator and possibly other types of power generating units. The power deviations, i.e. deviations from a power reference for the power plant, are determined as energy errors. The invention addresses solutions for determining and compensating the energy errors.
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 invention relates to a method for determining power set points of a power plant comprising a plurality of power generating units with at least one wind turbine generator. The determination of the power set points are based on a prioritization of the power generating units, where the power generating units are prioritized with respect to individual power levels or fatigue levels obtained for the power generating units. The prioritization is adjusted so that the adjusted prioritization depends both on the power and fatigue levels.
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 wind turbines, particularly to controlling a wind turbine during a communication loss between the wind turbine and the power plant controller. In case of communication loss, the wind turbine enters a fallback operation mode, wherein the wind turbine is ramping the power production of the wind turbine to a predefined fallback set point.
Abstract:
The invention relates to a test device (500) and method (100) of testing a wind power plant component, such as a wind power plant controller (20). The test device (500) includes one or more subsystem simulators (530, 540, 550, 560, 66, 570, 575, 580, 585)that cooperate to provide a system level simulation of a wind power plant (10). Each subsystem simulator (530, 540, 550, 560, 566, 70, 575, 580, 585) is configured to simulate a wind power plant subsystem or conditions influencing the wind power plant (10).The method(100) includes connecting (102) the wind power plant controller (20) to the test device (500), and testing (103) the wind power plant controller (20).
Abstract:
Aspects of the present invention relate to a method (100) for controlling one or more wind turbine generators (14). The method (100) comprises: monitoring (102) an electrical parameter of a power network (16) to which the wind turbine generators (14) are connected with respect to a deadband for the electrical parameter; and determining (104) that the monitored electrical parameter is deviating outside of the deadband. In response to determining that the electrical parameter is deviating outside of the deadband, the method comprises: quantifying (106) a severity of the deviation; and selectively (108) implementing a parameter control mode when the quantified severity of the deviation is at or above a threshold level. In the parameter control mode, one or more power set points are determined based on the value of the electrical parameter and are dispatched to control the wind turbine generators (14).