429 results about "Wind park" patented technology

The present invention relates to a method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto. The object of the present invention is to define a method for operating a wind turbine and to provide a wind turbine and/or a wind farm that is capable, even when the output of non-reactive power fluctuates, of reducing or at least of insignificantly increasing the unwanted fluctuation in voltage at a predefined point in the grid compared to the situation with no wind turbine(s). Method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto, characterized in that the phase angle φ is changed in response to at least one voltage measured in the grid.

A method for operating a wind turbine and to provide a wind turbine and/or a wind farm that is capable, even when the output of non-reactive power fluctuates, of reducing or at least of insignificantly increasing the unwanted fluctuation in voltage at a predefined point in the grid compared to the situation with no wind turbines. Method for operating a wind turbine with an electrical generator, drivable by a rotor, for supplying electrical power to an electric grid, in particular to the loads connected thereto, characterized in that the phase angle φ is changed in response to at least one voltage measured in the grid.

A device, a system, and a method for preventing power-producing wind turbine generators from tripping due to the detection of a low-voltage condition on a power grid are disclosed. The disclosed device includes a resistor bank that absorbs real power and a control system that maintains the collector bus voltage above a threshold voltage level during the duration of low-voltage condition on the power grid. Collector bus voltage is maintained using gating signals that include phase delay angles to adjust the opening/closing of the switching devices.

A Mixer/Ejector Wind Turbine (“MEWT”) system is disclosed which routinely exceeds the efficiencies of prior wind turbines. In the preferred embodiment, Applicants' MEWT incorporates advanced flow mixing technology, single and multi-stage ejector technology, aircraft and propulsion aerodynamics and noise abatement technologies in a unique manner to fluid-dynamically improve the operational effectiveness and efficiency of wind turbines, so that its operating efficiency routinely exceeds the Betz limit. Applicants' preferred MEWT embodiment comprises: an aerodynamically contoured turbine shroud with an inlet; a ring of stator vanes; a ring of rotating blades (i.e., an impeller) in line with the stator vanes; and a mixer/ejector pump to increase the flow volume through the turbine while rapidly mixing the low energy turbine exit flow with high energy bypass wind flow. The MEWT can produce three or more time the power of its un-shrouded counterparts for the same frontal area, and can increase the productivity of wind farms by a factor of two or more. The same MEWT is safer and quieter providing improved wind turbine options for populated areas.

The present invention relates to an improved wind turbine, of the type which employs doubly fed induction generators (DFIG), and a wind park including the same, which permits the use of lighter weight turbines, with the ability to have greater energy capture, more precise control of asymmetrical phases and enhanced maintenance and support of the grid during fault conditions.

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 global power coefficient as a signal via the communication lines and lower-level regulators at the wind energy installations.

A predictive maintenance system for wind parks, the wind park comprising a group of wind turbines (Ai), a communications network (RS) and a supervision and control system (ST) The predictive maintenance system comprises a monitoring and processing equipment (SMP) connected to the control system (PLC) of the wind turbine (Ai), such that the monitoring and processing equipment sends alarms through the control system of the wind turbine to the supervision and control system. The invention also refers to a monitoring and processing equipment (SMP) for wind turbines.

The present disclosure is directed to a digital system for managing a wind farm having a plurality of wind turbines electrically coupled to a power grid. The system includes a farm-based first communication network having one or more individual wind turbine control systems communicatively coupled to the one or more wind turbines and an overall wind farm control system. The system also includes a cloud-based second communication network communicatively coupled to the first communication network via an industrial gateway. The second communication network includes a digital infrastructure having a plurality of digital models of the one or more wind turbines, wherein the plurality of digital models of the one or more wind turbines are continuously updated during operation of the wind farm via data supplied by the farm-based first communication network.

A method of controlling a wind turbine is provided. The method includes the steps of obtaining a number of operating values relevant to a wind turbine, calculating a thrust setpoint on the basis of the operating values, and controlling a wind turbine according to a thrust setpoint. A wind park controller, a wind turbine controller, and a wind park are also provided.

A large-sized monitored control System for the wind power generation plant on the sea, pertaining to the field of the computer application technology; this device consists of a data acquisition unit, a mono-computer monitoring data transmission unit, a mono-computer monitoring data processing unit, a multi-computer monitoring data transmission unit and a gross data processing unit. The data acquisition unit collects the technical parameter of the wind power plant; the mono-computer monitoring data transmission unit delivers the data of the data acquisition unit to the mono-computer monitoring data processing unit; the mono-computer monitoring data processing unit can process the data from the mono-computer monitoring data transmission unit; the multi-computer monitoring data transmission unit delivers the data processed by the mono-computer monitoring data processing unit to the gross data processing unit; the gross data processing unit can process the data from the multi-computer data transmission unit. The man-machine operating interface is introduced to send the control order to the mono-computer monitoring data processing unit as per the actual demand of the operation. This utility model is provided with a simple structure and a high practicability as well as lowers the manufacturing cost of the wind power plant.

The invention relates to a method for controlling a wind park comprising several wind power installations to feed electrical power into an electrical AC grid at a point of common coupling (PCC). The method comprises feeding a 3-phase current at a point of common coupling, identifying a grid voltage on the point of common coupling, comparing the grid voltage that was identified on point of common coupling with at least one predetermined set point value, determining set point values for wind power installations depending on a comparison conducted to meet a stability criterion on point of common coupling, passing the determined set point values to plant control units of the individual wind power installations, and producing electrical current at each of the wind power installations depending on the predetermined set point values to be jointly fed in on point of common coupling.

The invention discloses a method for jointly scheduling power generation load by using a wind power generation unit and a thermal power generation unit. A wind power plant, a circulating fluidized bed unit, a heating unit and the like which are within a same area or belong to a same power generation group are equivalent to a virtual unit, unified load instructions are issued from a power grid side, and the load instructions are decomposed on a unit side according to characteristics of various units to realize operation of the wind power plant at the maximum power generation power, wide-range variable load operation of the circulating fluidized bed unit and high-rate variable load operation of the heating unit. Mutual coordination of the wind power plant, the circulating fluidized bed unit and the heating unit is realized under the joint scheduling of a power grid, advantages of each unit are fully utilized, capacity of the power grid to receive wind power generation load is greatly improved, and the maximum-power operation of the wind power plant is realized while safety in operation of the power grid is guaranteed, so that waste of wind energy is reduced and power generation cost and environmental pollution are reduced.

A wind power driven electricity generator set, which contains wind wheel mounted on air pump axel, connection pipe between exhausting outlet and air inlet of high pressure sir storage tank, two ends of air delivery pipe connected with exhausting outlet of high pressure air storage tank and wind power generator assembly, distributor mounted on air delivery pipe, the pressured air blowing the impeller of generator to generate electricity.

The invention relates to a light-wind-water complementary type water pumping and energy storing power generation peak adjusting device which belongs to the field of development and utilization of newenergy sources. The device is characterized in that an upper water storage reservoir is built on the mountain top in a mountain area depending on a high mountain; a lower water storage reservoir is built in a valley; the mountain slope exposed to the sun in the area is provided with a solar energy photovoltaic cell board; wind power generation fields are arranged on the upper water storage reservoir on the mountain top and the position at periphery with more favorable wind current condition; a water pumping and energy storing power generation peak adjusting power station is arranged between the upper water storage reservoir and the lower water storage reservoir; the lower water storage reservoir is provided with a water pump station; a water inlet pipe and a water outlet pipe of the waterpumping and energy storing power generation peak adjusting power station are respectively communicated with the upper water storage reservoir and the lower water storage reservoir; and a water inlet pipe and a water outlet pipe of the water pump station are respectively communicated with the lower water storage reservoir and the upper water storage reservoir. The invention can carry out large-scale development and storage in such a way that solar energy and wind energy are converted into water energy and lead a traditional water pumping and energy storing hydropower station to finish peak adjustment on a power grid under the condition of not consuming or consuming less electric energy of the power grid.

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.

The invention relates to a method for reducing fatigue loads in the components of a wind turbine subjected to asymmetrical loading of its rotor, comprising the steps of: repeatedly collecting and storing load data of the rotor, determining a load distribution function for the rotor from said stored data, deriving a plurality of periodic functions from said load distribution function, determining actions for the wind turbine control means for reducing the fatigue load of the wind turbine components from said derived plurality of periodic functions, and implementing of said determined actions on the wind turbine control means. The invention also relates to a control system as well as a wind turbine and wind park.

The invention discloses a real-coded genetic algorithm-based optimizing method for the micrositing of a wind power station. In the method, the measured wind speed in the wind farm is corrected by an index model in the direction of relative height; a power characteristic curve of a wind machine is discretized by a linearized method; for the wake flow of the wind machine, a linearized wake flow model is adopted; the wind speed of the wind machines at the wake flow of a plurality of wind machines is solved by a method of the summation of squared differences, when part of the wind machines are positioned in the wake flow, the wind speed is revised by a method of area coefficients; based on an optimizing target function of the micrositing in the design of the wind power station, when the total number of the wind machines in the wind power station is determined, the total generated energy is used as the target function, and when the total number of the wind machines in the wind power station is not determined, the kilowatt-hour cost is used as the target function; and the microcosmic arrangement site of each wind machine in the wind power station is obtained by the real-coded genetic algorithm-based optimizing method. By the method, the reliability of forecast is high, the optimizing efficiency is high and results are accurate.

The invention relates to a variable rotor speed wind turbine transmitting AC electric power to a utility grid. The wind turbine includes at least one AC generator and at least one power electronic converter unit. Further, it includes means for transforming at least one nominal output value of the generator to at least one different nominal input value of the at least one power electronic converter unit.

The invention also relates to a wind park and a method of transmitting AC electric power to a utility grid from a variable rotor speed wind turbine as well as a method of servicing or inspecting a variable rotor speed wind turbine.