Method for operating a wind energy plant
First Claim
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1. A method for operating a power system comprising:
- generating electrical power with an electrical generator of a wind power installation driven by a rotor to output the electrical power to an electrical grid;
sensing an electrical current of the electrical power outputted to the electrical grid to detect a fault in the grid;
maintaining connection of the wind power installation to the grid during the fault to continue to supply electrical current to the grid from the wind power installation during the fault;
limiting the electrical current delivered by the wind power installation to the grid during the fault to less than a selected amount;
controlling the wind power installation from a control station distant from the wind power installation to remotely adjust the amount of electrical current delivered by the wind power installation to the grid during the fault; and
resuming normal function of the wind power installation when the fault is no longer in the grid.
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Abstract
The present invention relates to a method for operating a wind turbine with a generator, drivable by a rotor, for supplying electrical power to an electrical load, in particular an electric grid. In order to compensate for fluctuations in the grid as far as possible, the system of the kind initially specified is developed in such a way that the power delivered to the load by the generator is regulated in response to a current outputted to the load.
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Citations
41 Claims
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1. A method for operating a power system comprising:
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generating electrical power with an electrical generator of a wind power installation driven by a rotor to output the electrical power to an electrical grid; sensing an electrical current of the electrical power outputted to the electrical grid to detect a fault in the grid; maintaining connection of the wind power installation to the grid during the fault to continue to supply electrical current to the grid from the wind power installation during the fault; limiting the electrical current delivered by the wind power installation to the grid during the fault to less than a selected amount; controlling the wind power installation from a control station distant from the wind power installation to remotely adjust the amount of electrical current delivered by the wind power installation to the grid during the fault; and resuming normal function of the wind power installation when the fault is no longer in the grid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A power system, comprising:
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a wind power installation including; an electrical generator coupled to a rotor to output electrical power to an electrical grid; a sensor operable to detect a fault in the grid; a regulating device configured to maintain connection of the wind power installation to the grid during the fault and to continue to supply a limited current from the wind power installation to the grid during the fault; and an external command input; and a control station remote from the wind power installation operable to adjust the limited current during the fault by commands given to the external command input of the wind power installation. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for operating a wind turbine comprising:
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generating electrical power from a generator coupled to a rotor and driven by wind; outputting the electrical power from the wind turbine to an electrical grid; detecting a fault in the electrical grid based upon a sensed parameter; and regulating the electrical power output to the electrical grid such that at least an electrical current of the electrical power output to the electrical grid does not exceed a selected amount, and such that the wind turbine remains operable and connected to the electrical grid so that the electrical power is output to the electrical grid during the fault; controlling the amount of power supplied by the wind turbine to the grid by commands submitted to an external command input of the wind power turbine from a control center remote from the wind power turbine; and resuming normal function of the wind turbine when the fault is no longer on the grid. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification