METHOD OF DETERMINING INDIVIDUAL SET POINTS IN A POWER PLANT CONTROLLER, AND A POWER PLANT CONTROLLER
First Claim
1. A method of determining individual set points in a power plant controller arranged to control a wind power plant comprising one or more wind turbine generators and optional compensation equipment capable of generating electrical output, the individual set points relating to active and/or reactive power to be requested from each of the one or more wind turbines and the optional compensation equipment for delivery to an external electrical grid, the method comprising the steps of:
- a) receiving a request for active and/or reactive power to be delivered to the external electrical grid;
b) determining the available active and reactive power from the at least one wind turbine generators and from the optional compensation equipment;
c) comparing the requested active power with said determined available active power and/or comparing the requested reactive power with said determined available reactive power; and
d) in the case where the comparison in step c) shows that the requested active power is less than the determined available active power and/or the requested reactive power is less than the determined available reactive power, determining individual setpoints for the at least one wind turbine generator and compensation equipment, wherein the determination of said individual setpoints is a combined calculation of optimised individual setpoints for the active power and reactive power from the at least one wind turbine generator and compensation equipment by use of information on the internal electrical grid in the wind power plant.
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Accused Products
Abstract
This invention relates to a method and a power plant controller arranged to carry out the method. The method is on an intelligent dispatching of the power production to wind turbines and optional compensation equipment of a wind power plant, as the power producing units of a wind power plant. The invention relates to a case where the requested produced power is less than the total capacity of the power plant, and the invention relates to utilizing this situation to dispatch set points to the wind turbines and the compensation equipment in a flexible way. This flexibility may increase the wind turbines'"'"' life time, help in scheduling maintenance and expand the electrical operating range of the wind power plant. The determination of the set points on active and reactive power is a combined determination of both set points for each of the energy producing units of the wind power plant.
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Citations
16 Claims
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1. A method of determining individual set points in a power plant controller arranged to control a wind power plant comprising one or more wind turbine generators and optional compensation equipment capable of generating electrical output, the individual set points relating to active and/or reactive power to be requested from each of the one or more wind turbines and the optional compensation equipment for delivery to an external electrical grid, the method comprising the steps of:
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a) receiving a request for active and/or reactive power to be delivered to the external electrical grid; b) determining the available active and reactive power from the at least one wind turbine generators and from the optional compensation equipment; c) comparing the requested active power with said determined available active power and/or comparing the requested reactive power with said determined available reactive power; and d) in the case where the comparison in step c) shows that the requested active power is less than the determined available active power and/or the requested reactive power is less than the determined available reactive power, determining individual setpoints for the at least one wind turbine generator and compensation equipment, wherein the determination of said individual setpoints is a combined calculation of optimised individual setpoints for the active power and reactive power from the at least one wind turbine generator and compensation equipment by use of information on the internal electrical grid in the wind power plant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wind power plant controller arranged to control a wind power plant comprising at least one wind turbine generator and optional compensation equipment, the wind turbine generators and optional compensation equipment being capable of generating an electrical output, the wind power plant controller being arranged to control the wind power plant by transmitting individual set points relating to active and/or reactive power to be requested from the wind turbines and the optional compensation equipment, for delivery to an external electrical grid, the wind power plant controller comprising:
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a receiver for receiving a request for active and/or reactive power to be generated by the wind power plant; a unit for determining the available active and reactive power from the at least one wind turbine generators and from the optional compensation equipment; a comparator for comparing the requested active power with said determined available active power and/or comparing the requested reactive power with said determined available reactive power; and an optimizer for determining optimized individual setpoints for the at least one wind turbine generator and compensation equipment, in the case where the comparator detects that the requested active power is less than the determined available active power and/or the requested reactive power is less than the determined available reactive power, wherein the determination of said individual setpoints is a combined calculation of optimised individual setpoints for the active power and reactive power from the at least one wind turbine generator and compensation equipment by use of information on the internal electrical grid in the wind power plant.
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16. A computer program product comprising:
- at least one computer-readable medium; and
computer-readable signals, stored on the at least one computer-readable medium, that define instructions that, as a result of being executed by a computer, control the computer to perform a method of determining individual set points in a power plant controller arranged to control a wind power plant comprising one or more wind turbine generators and optional compensation equipment capable of generating electrical output, the individual set points relating to active and/or reactive power to be requested from each of the one or more wind turbines and the optional compensation equipment for delivery to an external electrical grid, the method comprising the steps of;a) receiving a request for active and/or reactive power to be delivered to the external electrical grid; b) determining the available active and reactive power from the at least one wind turbine generators and from the optional compensation equipment; c) comparing the requested active power with said determined available active power and/or comparing the requested reactive power with said determined available reactive power; and d) in the case where the comparison in step c) shows that the requested active power is less than the determined available active power and/or the requested reactive power is less than the determined available reactive power, determining individual setpoints for the at least one wind turbine generator and compensation equipment, wherein the determination of said individual setpoints is a combined calculation of optimised individual setpoints for the active power and reactive power from the at least one wind turbine generator and compensation equipment by use of information on the internal electrical grid in the wind power plant.
- at least one computer-readable medium; and
Specification