WIND PARK WITH VOLTAGE REGULATION OF THE WIND ENERGY SYSTEMS AND OPERATING METHOD
First Claim
1. A wind farm having at least two wind energy installations (1), which has a generator (15) with a converter (17) for production of electrical power and has a controller (2), having a farm master (8) which is designed for real-power and wattless-component monitoring, and transmits a control signal for the wattless component via a communication network (7) to the wind energy installations (1), and having a connection grid system (3) which connects the wind energy installations (1) to one another in order to feed the electrical power produced into a grid system (9) via a junction point (69), wherein at least one of the wind energy installations (1) has a power-factor regulator (24) to whose input a wattless-component nominal value is applied and which acts on the converter (17) in order to set a wattless component which corresponds to the wattless-component nominal value, characterized in that the wind energy installation (1) has an additional regulator (4) to whose input a signal for a nominal voltage is applied, and which emits control signals for the converter (17) in order to vary the emitted wattless component, in order to regulate the emitted voltage from the wind energy installations (1) at the nominal voltage, wherein a logic unit (5) is formed, which connects the powerfactor regulator (24) and the additional regulator (4) to one another such that a common control signal is formed for the converter (17).
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Accused Products
Abstract
A wind park includes at least two wind energy systems each comprising a generator and converter for generating electrical energy and a control system, a park master designed for active and idle power control that transmits a control signal for idle power via a communications network to the wind energy systems, and a connection network feeding generated electrical energy into a grid. The wind energy system can include an idle power regulator and a supplementary regulator, the control signals of each of which are linked together. Thus, a combination of idle power and voltage regulation is achieved that combines the advantages of each. Accordingly, the wind park can have high dynamic and stability notwithstanding erratic changes in the grid.
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Citations
23 Claims
- 1. A wind farm having at least two wind energy installations (1), which has a generator (15) with a converter (17) for production of electrical power and has a controller (2), having a farm master (8) which is designed for real-power and wattless-component monitoring, and transmits a control signal for the wattless component via a communication network (7) to the wind energy installations (1), and having a connection grid system (3) which connects the wind energy installations (1) to one another in order to feed the electrical power produced into a grid system (9) via a junction point (69), wherein at least one of the wind energy installations (1) has a power-factor regulator (24) to whose input a wattless-component nominal value is applied and which acts on the converter (17) in order to set a wattless component which corresponds to the wattless-component nominal value, characterized in that the wind energy installation (1) has an additional regulator (4) to whose input a signal for a nominal voltage is applied, and which emits control signals for the converter (17) in order to vary the emitted wattless component, in order to regulate the emitted voltage from the wind energy installations (1) at the nominal voltage, wherein a logic unit (5) is formed, which connects the powerfactor regulator (24) and the additional regulator (4) to one another such that a common control signal is formed for the converter (17).
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11. A wind energy installation which has a generator (15) with a converter (17) for production of electrical power, and has a controller (2) with a connection for a communication network (7), via which a control signal for the wattless component is applied to the wind energy installation, and has a power-factor regulator (24) to whose input a wattless-component nominal value is applied and which acts on the converter in order to set a wattless component which corresponds to the wattless-component nominal value, characterized in that the wind energy installation has an additional regulator (4) to whose input a signal for a nominal voltage is applied, and which emits control signals for the converter (17) in order to vary the emitted wattless component, in order to regulate the emitted voltage from the wind energy installations (1) at the nominal value, and wherein a logic unit (5) is provided, which connects the power-factor regulator (24) and the additional regulator (4) to one another such that a common control signal is formed for the converter (17).
- 13. A method for operation of a wind farm having at least two wind energy installations (1), which has a generator (15) with a converter (17) for production of electrical power and has a controller (2), having a farm master (8) which is designed for real-power and wattless-component monitoring, and transmits a control signal for the wattless component via a communication network (7) to the wind energy installations (1), and having a connection grid system (3) which connects the wind energy installations (1) to one another in order to feed the electrical power produced into a grid system (9) via a junction point (69), wherein the wattless component is regulated at least one of the wind energy installations (1) by means of a power-factor regulator (24) to whose input a wattless-component nominal value is applied and which acts on the converter (17) in order to set a wattless component, characterized by application of a signal for a nominal voltage to the at least one wind energy installation (1), and regulation of the emitted voltage by varying the wattless component emitted from the converter (17) at the nominal voltage by means of an additional regulator (4), and linking of the power-factor regulator (24) and the additional regulator (4) such that a common control signal is formed for the converter (17).
Specification