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Method for operating a wind park

Wind power installations were initially always erected in the form of individual units and it is only in recent years that, caused also by administrative and building regulations, wind power installations are frequently installed in wind parks. In that respect a wind park in its smallest unit is an arrangement of at least two wind power installations, but frequently markedly more. By way of example mention may be made of the wind park at Holtriem (East Frisia) where more than 50 wind power installations are set up in an array. It is to be expected that the number of units and also the installed power of the wind power installations will also increase greatly in the forthcoming years. In most cases the wind potential is at its greatest in regions of the power supply networks with a low level of short-circuit power and low population density. It is precisely there that the technical connection limits are quickly reached by the wind power installations, with the result that it is then no longer possible for further wind power installations to be set up at such sites._A method of operating a wind park comprising a plurality of wind power installations, wherein the wind park is connected to an electrical power supply network into which the electrical power produced by the wind park is fed and the wind park and / or at least one of the wind power installations of the wind park has a control input, by means of which the electrical power of the wind park or one or more individual wind power installation or installations can be set in a range of between 0 and 100% of the respective power to be made available, in particular the nominal power, and that there is provided a data processing apparatus which is connected to the control input and by means of which the setting value is set in the range of between 0 and 100%, depending on how great is the power that the overall wind park provides at its output for feeding into the energy network and wherein the operator (PSU) of the electrical supply network to which the wind park is connected can adjust the power delivered by the wind park by way of the control input.
Owner:WOBBEN ALOYS

Automatic measurement and correction method and system for LCD GAMMA curve and color temperature

The invention provides a GAMMA curvature correction and color-temperature automatic regulating method for liquid crystal display and the system. The said system consists of a system host-machine, a detector, a color analyzer, a video standard signal source, a data interface,and a system measure and correction software, which can perform GAMMA curvature correction and white balance adjustment for multi-purpose TV and computer display including LCD and high-resolution back projection and multi-structure liquid crystal display including TN, STN, DSTN and TFT to improve the videograph display quality of the liquid crystal display. The system host-machine connects multiple video signal sources, automatic measurement and correction software for GAMMA curvature and color-temperature and data interface together, the system parameter can be set manually or automatically, the system configuration is simple, GAMMA curvature correction and white balance adjustment software can be conveniently transferred, and can rapidly finish automatic measurement and correction for GAMMA curvature and color-temperature and can visually inspect the effect. The invention can be used in departments including scientific research, production, quality inspection and maintenance and can visually finish the GAMMA curvature correction and white balance adjustment for the LCD products with high accuracy and quick-speed.
Owner:ZHEJIANG UNIV
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