50 results about "Wind regime" patented technology

A hybrid blade wind turbine device formed of at least a pair of straight outer airfoil blades, and a pair of inner helical wing blades, as supported for rotation within a safety protective cage structure, which wind turbine can be mounted in the vertical, horizontal, or other aligned operational positions. The inner helical half wing blades, being preferably somewhat shorter than the length of the outer airfoil blades, act to “regularize” the swirling wind regime flowing through the hybrid wind turbine, so as to maximize the efficiency of the outer airfoil blades. The helical half wing blades can be formed of individual segmented vane segments to provide improved operational capabilities for the overall hybrid wind turbine. To best harness annualized available wind conditions, the hybrid wind turbine can be customized, through modification of the number of vane segments, the selection of the specific shape of the outer airfoil blades, and the specific operational positioning of the outer airfoil blades. Alternatively, the helical half wing blades can be formed as generally smooth-walled blades.

The invention discloses an emergency blade collection method for a wind turbine generator. According to the method, the blade collection action of a wind turbine generator under the emergency working condition is achieved through nonconstant variable blade speeds. The method specifically comprises the steps that (1) a blade collection control program comprising different variable blade speeds and variable blade times corresponding to the different variable blade speeds is preestablished; and (2) and whether the working condition of the wind turbine generator meets the blade collection control program starting conditions or not is judged, if yes, the blade collection control program is executed, and if not, the working condition of the wind turbine generator is continuously monitored. The method further comprises a fault protection step. Through the preestablished blade collection control program, when the emergency shutdown working conditions are met, the blade collection action is conducted at the nonconstant variable blade speeds, impact on the wind turbine generator due to the resonance frequency of the wind regime and the wind turbine generator is reduced, the safety of the wind turbine generator during emergency shutdown is better ensured, the tower drum production cost is reduced, the safety performance of the wind turbine generator is improved, and a foundation for further enlargement of the wind turbine generator is laid.

The invention relates to a wind generating set control method. The wind generating set control method comprises the following steps: step 1, acquiring an estimated wind regime characteristic value and a wind generator running state initial value via a local or remote communication system; step 2, according to the estimated wind regime characteristic value, the wind generator running state initial value and a wind generating set control parameter, calculating a running state value of a wind generating set at each time point; step 3, comparing the running state values, obtained in step 2, of the wind generating set with a designed safety threshold value of the wind generating set; step 4, adopting an absorption power coefficient reduction and power output improvement method to obtain a corrected wind generating set control parameter; and step 5, using the wind generating set control parameter meeting the designed safety threshold value as a final execution parameter of a wind generator control system. With the adoption of the wind generating set control method, the response speed of the wind generating set is increased, and energy loss and mechanical load brought by shutdown are avoided.

The invention relates to an intelligent composite generation power source tower, in particular to an intelligent composite generation power source tower, which is used for a multi-wind regime and all-weather intelligent vertical shaft full wind regime generator set, and rectifies a natural wind by the combination of multi-machine in series and a rising heat airflow. The intelligent vertical shaft wind power generator multi-set is provided with three air inlet type sets: a horizontal wind inlet typed set, an upper air inlet typed set and a lower air inlet typed set, the multi-set is also called full wind regime wind power generator set. The invention is a wind-collecting and external rotor high-efficiency magnetic suspension wind power system, with the configuration of wind-collecting and rectifier suspension, vertical shaft multi-machine in series, low damping and direct drive system. The energy source tower is added with an intelligent wind collector and an intelligent wind collecting chamber on the basis of the generator set, can change the area and the angle of the wind collector and the height of a wind collecting chamber door according to the wind power, and greatly improves the utilization ratio of the wind energy; the multi-generator set configuration keeps working at all weather and working conditions (single machine with low wind speed and automatic parallel machine at high wind speed), keeps the maximum output of the rated power, and improves the efficiency and the benefit of a fan system. In a no-wind state, the energy tower can continue to generate power by a geothermy which is generated by solar energy, industrial residual heat and according to a chimney ventilation principle; high-pressure gas and water which are stored underground can be released in time so as to drive a turbomachine to generate the power, thus ensuring the balance of power supply.

The invention provides a crossing method and device for an overspeed failure of a wind generating set. The method comprises the following steps: acquiring the current wind regime data; judging whetherthe current wind regime is overproof gust or not according the current wind regime data; if not, judging whether the current rotating speed of the wind generating set is greater than or equal to a preset crossing rotating speed or not and judging whether the current variable pitch rate of the wind generating set is greater than or equal to a preset crossing variable pitch rate or not; if the current rotating speed is greater than or equal to the preset crossing rotating speed and the current variable pitch rate is greater than or equal to the preset crossing variable pitch rate, increasing the cut-out rotating speed within a second preset time period and controlling the wind generating set to carry out a variable pitch operation continuously; reducing the cut-out rotating speed in a second preset time period, and judging whether the current rotating speed of the wind generating set is greater than or equal to the cut-out rotating speed or not; and if the current rotating speed of thewind generating set is smaller than the cut-out rotating speed, controlling the wind generating set to operate according to the current state.

The invention relates to a megawatt wind power simulation test system which is applied to the simulation test of a wind power generation unit to be tested. A dragging motor is sequentially connected with a torque meter and a gear box, the gear box and a hub of a wind power generation unit to be tested are connected through a coupling, a wind regime simulation device is in signal connection with a wind power test control system, a second power converter is electrically connected with a generator of the wind power generation unit to be tested, and the wind power test control system is electrically connected with a power-grid power distribution cabinet, a test power transformer, an electric switch cabinet, a first total power converter, the dragging motor, the torque meter, the gear box, a pitch control system on the hub of the wind power generation unit to be tested, a yaw system of the wind power generation unit to be tested, a low-voltage through simulation device, the second power converter and a test checkout system. According to the invention, tests such as a total power test, a yaw test, a pitch control test, a grid-connected power generation test and the like of various wind power generation units in a large power range can be realized.

The invention discloses a wind power plant active output and unit fatigue comprehensive optimization control method. Wind turbine components under the active adjustment mode are subjected to DEL datamodeling, and complex terrain wind power plant optimization control is carried out based on a DEL data model; and the control strategy is a composite control strategy combining active optimizing intelligent distribution based on wind regime characteristic predicting and active auxiliary adjustment. Therefore, on one aspect, the wind power plant active adjustment and unit fatigue comprehensive optimization control method effectively reduces the production, manufacturing and maintaining cost of wind power generation equipment, and the problem about new energy power generation distributed grid connection utilization with the wind power generation equipment as a main body is solved; and on the other aspect, the wind power plant active adjustment and unit fatigue comprehensive optimization control method is suitable for a complex terrain wind power plant with the small wake flow effect.

The invention provides yaw control equipment of a wind driven generator set and a yaw control method of the wind driven generator set. The yaw control equipment of the wind driven generator set comprises a first obtaining unit, an optimizing unit, a second obtaining unit, a difference value determining unit and a yaw control unit. The first obtaining unit is used for obtaining historical wind regime data of the wind driven generator set within a preset time period; the optimizing unit is used for determining a yaw error angle threshold value and a time delay threshold value by a preset optimizing algorithm according to the historical wind regime data and a simulation model of the wind driven generator set; the second obtaining is used for obtaining the wind direction of the position wherethe wind driven generator set is located at and the position of a cabin of the wind driven generator set in real time; the difference value determining unit is used for determining the difference value between the wind direction and the position of the cabin; and the yaw control unit is used for controlling the yaw of the wind driven generator set when the difference value is greater than the yawerror angle threshold value and the duration exceeds the time delay threshold value. The equipment is an offline optimizing manner, so that the equipment is capable of adapting to more complicated wind field condition, flexible in utilization, strong in versatility and good in expandability.

An embodiment of the invention provides a wind turbine and a wind energy capturing method and device thereof. The method comprises the following steps: acquiring wind regime data in real time according to a preset cycle; carrying out scattered point fitting on the wind regime data acquired in the preset cycle to obtain a geometric central point of the wind regime data, wherein the geometric central point is used for showing the location of a maximum wind energy value; comparing the geometric central point to a target geometric central point; and carrying out a corresponding wind driven generator control strategy according to a comparison result. By the embodiment of the invention, wind energy capturing capability and reliability of the wind turbine can be improved effectively, meanwhile, fan load increasing and wake effects which are caused by the reason that an impeller does not face a windward side can be reduced, and faults and maintenance cost of the wind turbine are reduced.

The invention relates to a variable pitch blade and a wind turbine provided with the variable pitch blade. The variable pitch blade comprises at least two blade sections which are sequentially connected. At least one blade section can rotate around one axis. According to the above variable pitch blade, pitch angles can be changed by controlling the different blade sections so as to achieve local pitch changing of the variable pitch blade so that the variable pitch blade can obtain the highest wind energy absorbing efficiency under the conditions of the different wind speeds and the different rotating speeds, the problem that the overall variable pitch blade cannot obtain the optimal wind energy absorbing efficiency at different wind speeds and different rotating speeds is solved accordingly, the wind energy utilization rate of the wind turbine provided with the variable pitch blade is increased under the same wind regime condition, the generating capacity of the wind turbine is finally improved, and the resource utilization efficiency is improved.

The invention discloses a yaw control method and device for a wind generating set. The method includes the steps that a wind regime recognition method is adopted for judging whether the current wind direction type is a trend type wind direction type or a fluctuation type wind direction type; if the wind direction is a fluctuation type wind direction, under-yaw control is adopted when yaw is stopped; if the wind direction is a trend type wind direction, whether wind in the trend type wind direction is turn-around wind or not is judged; if yes, under-yaw control is adopted when yaw is stopped; if not, over-yaw control is adopted when yaw is stopped. According to the method, the wind direction is divided into the fluctuation type wind direction and the trend type wind direction, whether wind in the trend type wind direction is turn-around wind or not is judged, different yaw stop control modes are adopted in the wind directions of different types, accuracy of yaw towards wind is improved, the number of times of yaw of the wind generating set is reduced, the fault occurrence probability of the wind generating set is reduced, and the generating capacity of the wind generating set is improved.

The invention relates to a wind generating set simulation testing method. The wind generating set simulation testing method comprises the following steps of (A) loading a wind generating set model module and a communication module, connecting a main control system, and releasing the loaded modules and exiting if loading or connecting fails; (B) reading the main control parameters of the main control system, loading a wind regime model module, and proceeding with a step (D) if reading or loading fails; (C) running the wind generating set model module, writing adjusted parameters of the wind generating set model module into the main control system, proceeding with the step (D) if running of the model or reading fails or simulation stops, and observing running conditions if writing succeeds but a simulation stopping instruction is not received; (D) stopping running the system, disconnecting the connection with the main control system, releasing the communication module and the wind generating set model module, and exiting; (E) quitting the simulation testing system. The method reduces the number of the actual testing times of a wind generating set, shortens development time, and reduces cost and the running risks of the wind generating set.

The invention discloses a method for quantitative evaluation of an explosion accident consequence of a marine oil and gas platform. Dangerous source identification, explosion probability calculation, geometric model establishment, wind regime determination, leakage unit division, leakage position determination, leakage rate calculation, and leakage time calculation are carried out successively; and then accident simulation and consequence analysis are carried out and quantitative simulation is carried out on an explosion accident of a marine oil and gas platform, so that the accident risk can be reduced effectively and the data support can be provided. The method has the following beneficial effects: with reference from of theoretical researches and practical experience of marine oil and gas exploitation risk analyses at home and abroad, key techniques suitable for the heavy accident risk analysis and accident simulation of the marine platform are studied by considering the current risk situation of the Shengli shallow-sea platform and thus an explosion accident quantitative simulation analysis method of the national marine environment is provided, thereby providing the safety technique support for the continuous and stable marine oil and gas production and enabling the marine oil and gas development to become safe and economic in future.

The invention discloses an optimizing control method for uniform fatigue distribution of parts of a wind power station unit under active power regulation. DEL data modeling is conducted on the parts of the wind power unitunder an active power regulation mode, optimizing control over a wind power station with the complex terrain is conducted based on a DEL data model, the control strategy adopts anintelligent active power distribution strategy based on wind regime characteristic measurement, therefore, the optimizingcontrol method is suitable for the wind power station with the complex terrainand with the small wake effect; and by optimizing uniform fatigue distribution of the parts of the wind power station unit under active power regulation, the production-manufacturing and maintenancecosts of wind power generating equipment are reduced effectively, and the stability of a wind power generating system is improved.

The invention discloses a blade locking device applied to a wind electricity typhoon unit. The blade locking device applied to the wind electricity typhoon unit includes a locking plate and an electric locking mechanism, wherein the locking plate is installed between a blade bearing of the wind electricity typhoon unit and blade roots of the wind electricity typhoon unit, the main body of the locking plate is in a ring shape, a protrusion part extending to the direction of the circle center is arranged on the inner edge of the ring-shaped locking plate, the protrusion part is provided with a shaft sleeve, the electric locking mechanism includes a guide seat mounted on a hub web plate of the wind electricity typhoon unit and an electric push rod arranged in the guide seat, a guide hole is formed in the top end of the guide seat, and a fitting pin connected with the electric push rod in a drive mode is arranged in the guide hole; and when the blades are locked, the electric push rod pushes the fitting pin into the shaft sleeve of the locking plate. The blade locking form of the blade locking device is used for the wind electricity typhoon unit and capable of achieving higher lockingstrength, and the blade locking purpose is achieved effectively, safely and quickly under the complex and severe wind regime condition.

The invention discloses a real wind regime and wind power generation simulation device with a wind shear and tower shadow effect. The real wind regime and wind power generation simulation device comprises a simulator control system and an electromechanical servo system, the simulator control system comprises a software system and a hardware system, the simulator control hardware system comprises an industrial personal computer and a data collecting card; the simulator control soft system comprises a wind speed generation model, a draught fan tip speed ratio estimation model, a draught fan pitch angle control model, a wind energy utilization coefficient model, a wind shear and tower shadow effect compensation model, a wind driven generator drive chain model and an induction generator model,the electromechanical servo system comprises a programmable controller, a direct current bus power module, a frequency conversion driving unit, a frequency conversion power generation unit, a drivingmotor, a loading motor, a rotating speed torque meter and a test bed. The real wind regime and wind power generation simulation device is used for the simulation of wind power generation process andresearch and application of wind power generation control strategy under laboratory environment.

The embodiment of the invention provides a yaw control method and a yaw control device for a wind turbine generator system. The control method comprises the following steps: acquiring the wind regimedata detected by an edge reference fan of a wind power plant and the wind regime data detected by the internal wind turbine generator system in the wind power plant; if the wind regime data of the edge reference fan is different from the wind regime data detected by the edge reference fan at the last moment, generating the yaw control data of the internal wind turbine generator system according tothe wind regime data of the edge reference fan and the wind regime data of the internal wind turbine generator system; and sending the yaw control data to a yaw control system of the internal wind turbine generator system. With the adoption of the technical scheme of the embodiment, the wind turbine generator system is controlled to carry out wind direction alignment or yaw, so that the wind energy utilization efficiency of wind turbine generators is increased.

The invention provides a method and a device for predicting the residual life of a key structure position of a wind turbine generator. The method comprises the following steps: establishing a wind turbine generator digital mirror image model and a wind power plant external environment extrapolation digital mirror image model; performing combined simulation on the possible operation state of the wind turbine generator and the wind condition of the wind turbine generator, and extracting simulation results corresponding to the working conditions to establish a simulation result database; establishing a wind turbine generator site load database according to the site actual operation condition statistical data and possible wind regime data; performing equivalent fatigue load calculation analysis on the standard design load data and the site load data according to an equivalent fatigue load algorithm; and establishing a wind turbine generator key structure position residual life analysis model, and carrying out analysis calculation on the key structure position of a single generator and the residual life of the whole generator. According to the method and the device for predicting the residual life of the key structure position of the wind turbine generator, efficient and accurate online prediction analysis of the residual life of the wind turbine generator can be realized.

The invention relates to the field of sand protection and sand treatment, especially provide a method to weaken the suspension and elevation capability of sand, suppress the sand grains flowing and reduce the incidence rate of the sand storm. It is characterized in that: release and project conductive fiber 14, short wire 16 and conductive short yarn 18 which contains wire and conductive fiber on the desertification areas on their effective density. Process the metal sectional materials, wires and materials with surface of good conductibility to stereo reticulation and pave them in the desertification areas near the wind regime. It can neutralize or reduce the dominance charges resulting from the sand friction or collision caused by the strong wind, cyclone or electric field correspondingly. It also can suppress the reduction of sand friction factor caused by the electrostatic phenomenon and maintain the relative position under the sand gravity action to reduce the suspension and flowing ability of sand. The invention avianizes the action force of wind, cyclone or electric field on sand by weakening the repulsion, variance or suspension capability of sand, which is in favor of resolving the sand treatment problem ultimately.

The invention discloses a wind regime power storage collector, comprising a wind power generation device, an electric heater and a water storage tank, wherein, the electric heater is arranged in the water storage tank, is electrically connected with and powered by the wind power generation device. In the invention, the electric heater does not have high requirements on stability of voltage; power generated by the wind power generation device can be directly used to heat water without going through rectification, voltage regulation and storage, consequentially, no devices for rectification, voltage regulation and storage are needed, the storage collector of the invention is a wind power utilization device with simple structure, low cost and can be used in combination with solar energy.

The invention relates to a wind turbine generator power curve verification method based on a wind power prediction anemometer tower. An anemometer tower is not independently installed, and the free flow wind speed of a wind turbine generator is expected to be obtained by using the data of the wind power prediction anemometer tower which is already arranged in a wind power plant, so that the power curve of the wind turbine generator in the wind power plant is verified. Through vector processing of wind power prediction wind direction data, wind power plant wind direction calculation rationality is fully guaranteed, and wind direction data reflect wind power plant wind direction characteristics more truly. A wind speed attenuation factor Cwake of the wind turbine generator is introduced, real-time data, recorded by a wind power plant Scada, of the wind turbine generator are fully utilized, the free flow wind speed of the wind turbine generator can be more truly calculated, and the actual operation wind regime characteristics of the wind turbine generator are represented; and a turbulence intensity calculation formula of a wind turbine generator is introduced to obtain approximate terrain dynamic characteristics.

The invention relates to a vertical shaft wind wheel turbine type wind generating set which is driven to generate power by wind force, turbine effect, chimney effect, as well as positive and negative pressure difference and instant explosive force of cyclostrophic flow which are generated by a wind collector. The vertical shaft wind wheel turbine type wind generating set comprises a control system, a combined steel frame 1, a plurality of generator sets 2, a double-layer machine room 3, a vertical shaft 4, a coupler 5, a rotatable wind collector and rectification plate 6, a combined wind cavity 7, a vertical wind wheel 8, a horizontal blade 9, a support combined frame 10, and a bearing 11. The vertical shaft wind wheel turbine type wind generating set synchronously controls the angles of a wind inlet shuttle 12 and a wind outlet shuttle 13 and the linkage of multiple motors through the strength of wind force and motor speed, so that the vertical shaft wind wheel turbine type wind generating set can generate power in the mode of full wind regime and maximization.

The embodiments of the invention disclose a wind regime identification method and device, a controller and a wind generating set. The wind regime identification method comprises the steps of obtaining an actual wind speed at a predetermined moment; drawing a standard extreme working gust curve of the target wind generating set in the preset period by taking the actual wind speed at the preset moment as a starting point; determining a peak value and a valley value of the standard extreme working gust curve; determining the standard wind speed change amplitude of the standard extreme working gust curve according to the peak value and the valley value, respectively acquiring actual wind speeds at moments corresponding to the peak value and the valley value; determining the actual wind speed change amplitude according to the actual wind speed at the moment corresponding to the peak value and the valley value; and recognizing whether the wind condition in the preset period is the gust wind regime exceeding the standard or not according to the standard wind speed change amplitude and the actual wind speed change amplitude. According to the wind regime recognition method and device, the controller and the wind generating set, whether the wind regime in the preset period is the gust wind regime exceeding the standard or not can be recognized.

The invention relates to a flexible wind generating set transmission system which comprises an impeller and a main shaft, wherein the front end of the main shaft extends into a hub of the impeller, and a ring-shaped elastic buffer disc sheathed on the main shaft is arranged in the hub of the impeller. The surface of the elastic buffer disc is in a stair shape transited from an inner circle to an outer circle and comprises an inner-ring stair surface and a turning-outward outer-ring stair surface. A convex ring is arranged on the main shaft, the inner-ring stair surface clings to the inner side face of the convex ring and is connected with the inner side face of the convex ring together, and the outer-ring stair surface clings to the outer end face of the hub of the impeller and is connected with the outer end face of the hub of the impeller together. A gap between the elastic buffer disc and the main shaft is filled with a rubber shock absorbing body. The flexible wind generating set transmission system has the beneficial effects that when wind regimes are abruptly changed, the flexible wind generating set transmission system can buffer capsizing moment transferred to the transmission system from the impeller and can reduce load of a bearing of the main shaft, so that the transmission is stable. Meanwhile, the loading of a yaw bearing can also be reduced, and the design cost is also reduced.

The invention relates to a wind power plant operation control method and device, equipment and a storage medium. The method comprises the following steps: acquiring target wind regime time sequence data of a target wind power plant; inputting the target wind regime time sequence data into a pre-trained wind power plant wake flow control model to obtain target working condition time sequence data corresponding to the target generation power of the target wind power plant, the wind power plant wake flow control model being obtained by training based on the sample wind regime time sequence data and sample working condition time sequence data corresponding to the target generation power, the target generated power is determined based on a wind power plant simulation model of the target wind power plant, and the target generated power is the maximum generated power of the target wind power plant under the target wind regime time sequence data; and based on the target working condition time sequence data, controlling operation of each wind generator set of the target wind power plant. According to the embodiment of the invention, the wake effect of the wind power plant is reduced, the overall power generation capacity of the wind power plant is improved, and the demand of improving the economic benefit of the wind power plant is met.

The embodiment of the invention provides a training method and device for an urban wind condition simulation model, and the method comprises the steps of building an underlying surface model of a target city, and enabling the underlying surface model to comprise the landform features of the target city; according to the landform features and discrete wind field data detected at each detection point of the target city, obtaining a wind field data sample of the target city, the wind field data sample including wind field change data of each place of the target city in different time periods; training a neural network by using the wind field data sample to obtain a wind regime simulation model, the wind condition simulation model being used for predicting the wind condition between the buildings of the target city. The wind condition simulation model obtained through training can effectively solve the technical problem that in the prior art, the wind speed and the wind direction of the tuyere areas among the buildings in the city cannot be predicted, the influence of the wind condition on the city is predicted in advance, and precautionary measures are taken.

The embodiment of the invention provides a wind power plant generation power prediction method and system and a computer readable storage medium, and the method comprises the steps: obtaining the future weather forecast wind conditions of a plurality of sub-regions of a wind power plant, the wind power plant being divided into the plurality of sub-regions, and each sub-region comprising at least one fan; correcting the future weather forecast wind regime of the sub-region by using the historical weather forecast wind regime of the sub-region in the same time period and the historical actually measured wind regime of the sub-region to obtain the corrected forecast wind regime of the sub-region; and predicting the future total generated power of the wind power plant based on the corrected forecast wind conditions of the plurality of sub-regions. According to the wind power plant generation power prediction method, the accuracy of wind power plant power prediction is effectively improved.