Data processing: generic control systems or specific application – Specific application – apparatus or process – Electrical power generation or distribution system
Reexamination Certificate
2005-09-30
2009-10-20
DeCady, Albert (Department: 2121)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Electrical power generation or distribution system
C290S044000
Reexamination Certificate
active
07606638
ABSTRACT:
A windpark includes at least two wind energy installations, each of which installations comprises a rotor, a generator driven by the rotor and a control device, and which are connected via connecting lines to a main line. The windpark also includes a linking point which connects the main line to a power transmission network, a parkmaster which is configured for power factor control and has communication lines for transmission of control signals to the wind energy installations, and a power-factor control section including a distributed regulator having a higher-level regulator located at the parkmaster which is configured to determine a nominal voltage in order to set a global power coefficient for the power which is emitted to the power transmission network and to emit the nominal voltage as a signal via the communication lines and lower-level regulators at the wind energy installations.
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Tapia, A., et al. (2004). “Reactive Power Control of Wind Farms for Voltage Control Applications,” Renewable Energy 29: 377-392.
Rodriguez-Amenedo, Jose Luis, et al. (2002). “Automatic General Control of a Wind Farm With Variable Speed Wind Turbines,”IEEE Transactions on Energy Conversion, vol. 17, No. 2: pp. 279-284.
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Fortmann Jens
Letas Heinz-Hermann
DeCady Albert
Garland Steven R
Morrison and Foerster LLP
REpower Systems AG
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