45 results about "Wind power" patented technology

The invention relates to a multi-target random fuzzy dynamic optimal energy flow modeling and solving method for a multi-energy coupling transmission and distribution network and belongs to the field of day-ahead scheduling plan research of electric power systems in an energy interconnection environment. The method comprises the following steps: basic data in a system scheduling period are obtained,; random fuzzy space-time sequence models for large-scale wind power, distributed power source and multi-energy loads are obtained via historical data mining; power and voltages of a power transmission network and all active distribution networks at joint nodes are used as share variables; multi-target SoS dynamic optimal energy flow models characterized by high economic performance, low carbon emission, renewable energy absorption, loss reduction and the like are built within static state security constraints; multi-energy source charge forecast can be realized through random fuzzy simulation; a Pareto solution set, an optimal compromise solution and an energy flow result can be obtained via adoption of an improved SoS layered optimizetion algorithm based on approximate dynamic programming and NSGA-11. The method can adapt to a development trend of energy interconnection, and comprehensive coordination optimization of day-ahead scheduling of transmission and distribution parties can be realized on the premise that requirements for static state safety and stabilization of systems can be satisfied.

The invention provides a long-fiber enhanced thermoplastic composite material vane used for a wind energy generator, which is composed of a long-fiber enhanced thermoplastic composite material, wherein the long fiber is glass fiber, carbon fiber or the composite fiber of glass fiber and carbon fiber; the content of the long fiber in the vane is 32-75wt%, the reservation length of the long fiber is 2.8-25mm and can form a mutually-tangled three-dimensional net structure characteristics, and therefore the product has a higher impact resistance, and especially has low-temperature impact resistance; the preferable size of the vane manufactured by the injection molding technology is 46-2200mm; the vane surface is provided with a primer layer; and the primer layer is sprayed with a UV (ultraviolet) photocuring light shade surface. In the product, the vane is manufactured by the injection molding technology, and the product has the excellent performances of simple production technology, low cost, long service life, low specific gravity, low-temperature warping deformation resistance, stable size, no water and moisture adsorption, high strength, low-temperature impact resistance, scratch resistance, ultraviolet aging resistance, chemical solvent corrosion resistance and the like.

The invention discloses a wind power blade tip lengthening method. By bonding a blade tip lengthening section with a basic blade through a structural adhesive to increase the length of the blade, the purpose of improving the generating capacity is achieved. On the premise that the appearance of the basic blade is not destroyed, the structural adhesive can be uniformly and fully applied to an bonding area of the blade tip lengthening section and the original blade by constructing an adhesive injecting system, therefore, the bonding strength is effectively improved, the construction complexity is reduced, the construction time is shortened, and the construction cost is lowered.

A kind of illuminate device light controls multiple functions natural lamp with the natural wind energy and the solar energy generating electricity. It is at the outside of hollow hexangular base circular holder pipe makes the four-groove vertical revolving tray, inner gear mission, pillow, 100W DC generator, hexangular surface shape big lamp screen, solar energy battery plate, steady flow voltage regulator, charging bomb, light controller, and the energy-saving bulb connected in sequence assemble. The charging bomb inlet wire positive and negative electrode connect with the output positive and negative electrode line of the 100W DC generator and the solar energy battery plate and the charging bomb's output positive and negative electrode line connects with the energy-saving lamp supplying electricity among of them connecting the light controller in series. When there is the wind and the solar the 100W DC generator and the solar energy battery plate supply the electricity for the charging bomb at the same time; when there is no wind and solar the charging bomb supplies the electricity for the energy-saving lamp supplying electricity circuit. Among them it connects the light controller in series and the ray of light is strong so the light controller cuts the energy-saving lamp supplying electricity circuit automatically; at night there is no light so the light controller will turn on the energy-saving lamp supplying electricity circuit automatically.

The invention belongs to the field of energy storage materials adopting mixed molten salt and particularly relates to a mixed molten salt type heat transfer and storage working medium and an application thereof. The mixed molten salt type heat transfer and storage working medium is characterized by comprising components in percentage by mass as follows: 20wt%-30wt% of Ca(NO3)2*4H2O, 41wt%-50wt% of KNO3,5wt%-20wt% of NaNO3 and 10wt%-31wt% of NaNO2. The application of the mixed molten salt type heat transfer and storage working medium is characterized in that the mixed molten salt type heat transfer and storage working medium is widely applied to the medium-high-temperature heat transfer and heat storage fields, such as solar thermal power generation and storage, wind power curtailment, photoelectricity curtailment and ''coal to electricity'' heat storage and supply or industrial waste heat recovery and storage. The cost of ingredients used for preparing the mixed molten salt is low, and the preparation process is very simple; the thermophysical property of the mixed molten salt is very stable, the separation phenomenon of certain ingredients cannot be caused in the use process, the molten salt has a good heat transfer performance in a liquid-state temperature zone, and the saturated vapor pressure is lower than double barometric pressure. The working medium has low corrosivity for metal and has a wide application range.

The invention belongs to the technical field of building materials, and particularly relates to an autoclaved aerated concrete block and a preparation method thereof. Waste wind power blade fibers used in the invention can inhibit and reduce the dry shrinkage of the autoclaved aerated concrete block, and avoid the problems of masonry cracking and the like caused by water absorption and large dry shrinkage of the block in the actual use process; and the characteristics of small particle size and high specific surface area of the waste wind power blade powder are fully utilized, the waste wind power blade powder is used for replacing fly ash, slag and other raw materials in conventional building block production raw materials, the micro aggregate filling effect of the waste wind power blade powder is exerted, and the mechanical property of the building block is enhanced.

The invention relates to the technical field of electric curtains. The invention discloses a curtain device with an automatic adjusting function and a warning function. The curtain device includes a wall and a supporting rod, a thick curtain is connected to the lower ends of hanging rings, the lower end of a second moving block is connected with a thin curtain, first fan blades are arranged at theright end of the second threaded lead screw, a photoresistor is connected to the upper end of the wall and the upper side of the supporting rod, second fan blades are arranged on the outer side of arotating shaft, a control device is arranged in the wall, an air bag is connected between fixing supports, and a variable resistor corresponding to metal balls is arranged on the upper side in the wall. The photoresistor is irradiated by sunlight, the control device controls a first driving device to drive a first threaded lead screw to rotate, wind power generated by rotation of the second fan blades pushes the first fan blades to rotate slowly, the first fan blades drive the second threaded lead screw to rotate, the second moving block drives the thin curtain to move leftwards, and the structure solves the problem that an existing electric curtain cannot be adjusted according to the illumination angle.

The invention discloses a maximum power output control method suitable for controlling a variable speed wind turbine group through concentrated variable flow. According to n wind turbines which are controlled by the same converter in a concentrated mode and are constant in rotating speed and different in input air speeds, the concentrated converter and overall wind turbine propeller pitch variation mechanisms are controlled in a coordinated mode, and therefore maximum power output of the wind turbine group is achieved. A control objective of the concentrated converter is that the speed of the wind turbine with the higher wind speed approaches to the optimal rotating speed as much as possible and a control objective of the propeller pitch variation mechanisms is that the highest wind energy utilization rate of the wind turbine with the lower wind speed is obtained at the unified rotating speed of the wind turbine group. The optimal calculation method is adopted and the frequency conversion alternating current bus frequency and the overall wind turbine propeller pitch angle which correspond to the maximized output power of the wind turbine group are worked out. The maximum power output control method is suitable for the variable speed wind turbine group controlled by an AC-DC converter in a high-voltage direct current power transmission system and an AC-AC frequency converter in a frequency division power transmission system.

The present invention relates to wind driven generator, and is especially one kind great power cyclone-resisting constant speed wind energy absorbing tower for utilizing wind energy in generating electricity. It has several superposed wind absorbing units, each of which includes frame, blade combination and central shaft. Each of the rotating blades arranged inside the frame has upper and lower ends connected controllably to the frame. In the upper and lower of each blade, there are controllable blocking units, and on the frame, there is wind strength sensor connected to the control center. There are also one or several wind driven generators set. The present invention has the advantages of large wind accepting area, great power, strong wind resistance, and capacity of utilizing wind in all direction.

The invention discloses a climbing mechanism and a climbing system for solving the technical problems that wind power equipment is disassembled or maintained by adopting a hoop type climbing mechanism in the prior art to easily lead to depression or damage of the walls of a tower drum. The climbing mechanism comprises at least two transverse telescopic mechanisms and at least one longitudinal telescopic mechanism; the transverse telescopic mechanisms are connected by the longitudinal telescopic mechanism, and the longitudinal telescopic mechanism is used for driving the transverse telescopic mechanisms to move along a vertical direction; and the transverse telescopic mechanisms can move toward a climbed object on the horizontal direction to be inserted in the climbed object, and the transverse telescopic mechanisms can depart from the climbed object on the horizontal direction to separate from the climbed object. The climbing mechanism is used for climbing the climbed object.

The invention discloses a large wind farm equivalence method for online safety analysis based on station topology, belonging to the technical field of power system operation control. The method comprises the steps of grouping according to the topology connection relation between a unit and a terminal transformer and a feeder, grouping wind turbine units in each group according to start and shutdown states, rated active power, stability parameters, a protection constant value, a type, active power and a pitch angle, obtaining the grouping information comprising unit grouping in a wind field, grouping in a group and unit division in a group, obtaining an equivalent wind power unit corresponding to each group and parameters of rated active power, active power upper and lower limits, active power and reactive power of an equivalent terminal transformer on the above basis, and outputting a grouping result. According to the method, the calculation speed and calculation precision are comprehensively considered, while the speed of simulation calculation is ensured, the simulation accuracy can be effectively improved, and the method is suitable for power grid on-line safety analysis and calculation.

The invention discloses a wind power penetration limit determination method based on peak-regulating balance constraint. The method comprises: firstly, solving wind power penetration limit of each selected time-in-point in a time interval [ton, toff], on each time-in-point, using a discrete variable search algorithm to perform maximum search on UGt, searching a generator set state vector UGt in a generator set state space [omega], the generator set state vector UGt making wind power capacity an electric system can accept reach the maximum in the time-in-point, and through a wind power penetration limit model to calculate the wind power penetration limit value at the moment; and performing minimum search on the wind power penetration limit values obtained in all time-in-points, to obtain the minimum value of wind power penetration limit in the interval of [ton, toff]. The method uses time combining with the generator set as decision variables, and an improved bender's decoupling algorithm is used for solution and optimization, preventing influence on calculation precision by selection of operating methods of an electric system and setting of original values. The method can improve precision and efficiency of wind power penetration limit calculation.

The invention discloses an offshore low-voltage ride-through detection method for a wind generating set. The method comprises the following steps of constructing a simulation testing machine system, and calculating corresponding current-limiting reactance and short-circuit reactance according to a to-be-detected voltage drop degree and the simulation testing machine system; simulating no-load operation of the testing machine system; simulating a test point power grid fault, and generating a required voltage drop according to a test standard; the output power of the simulation testing machine system being adjusted to be 10%-30% of the rated power, and a low-voltage ride-through test under a light load being carried out; and S5, adjusting the output power of the simulation testing machine system to 80-95% of the rated power, carrying out a low-voltage ride-through capability test under a heavy load, and recording test data. Based on different operation history and maintenance work of each unit of the wind power plant, similarity between the wind power plant unit and the actual wind power plant unit is calculated, the product identity is improved, an actual state of the actual wind power plant unit is greatly restored, and the method has practical significance and effect on field low voltage ride through detection.

The invention discloses a wind-driven water pumping device comprising a vertical rod, a connection plate and a wind blade assembly. The wind-driven water pumping device further comprises two chain wheels, two connection rods, a piston water pump, a water inlet pipe and a water outlet pipe. The connection plate is rotationally connected with the upper end of the vertical rod; the wind blade assembly is formed by a rotating shaft; the rotating shaft is rotationally connected with the connection plate; the chain wheel is rotationally connected with the connection plate; the chain wheel is connected with the rotating shaft via a transmission chain; the upper end of the connection rod is rotationally connected with the edge of the chain wheel; and the piston water pump has a plunger. The wind-driven water pumping device is advantaged by relative low installation precision and low production cost due to transmission by the chain wheel; with the piston water pump, water can be pumped even when the wind power is weak, so great reliability can be achieved; and with a water storage bucket, a water rush hour can be alleviated.

The invention discloses water cleaning and purifying equipment taking clean energy as an auxiliary energy supply. The water cleaning and purifying equipment comprises a floating body, a main energy supply device, an auxiliary clean energy supply device, a water filtration channel, a driving device and a solid waste collection bin, wherein the water filtration channel penetrates through the floating body from the front to rear; the driving device is arranged in the water filtration channel; the solid waste collection bin is arranged on the floating body; the water filtration channel sequentially comprises a solid waste collection section, a water purification section and a drainage section from the front to rear; top plates of the solid waste collection section, the water purification section and the drainage section are flush with one another; the solid waste collection section is connected with the solid waste collection bin through a transfer device; the water purification section isfilled with water purification packing; a guide plate is arranged on the drainage section and controlled by a steering engine. According to the water cleaning and purifying equipment disclosed by theinvention, the solid wastes floating or suspending in the water can be cleaned, the water can be purified, dual treatment is completed at a time, and the water quality is greatly improved. In addition, solar energy, wind energy and other clean energy can be fully utilized, and the environmental pollution is reduced.

The invention discloses an uncertainty analysis method and system for wind power plant prediction. The method comprises: obtaining turbulence intensity levels from obtained wind power plant data according to a preset division threshold value; constructing a conditional quantile regression model based on the turbulence intensity level, the actually measured power and the predicted power; and combining the turbulence intensity levels and a conditional quantile regression model under each turbulence intensity level to obtain the uncertainty of the predicted power. On the basis that uncertainty isdetermined through a quantile regression method, a conditional quantile regression model is established according to research on statistical characteristics of turbulence intensity variables under all turbulence intensity levels, and therefore an original wind power prediction uncertainty analysis method is partially optimized.

The invention discloses an air-drop accurate positioning instrument, which comprises an accurate positioning system, and is characterized in that the accurate positioning system comprises a processor,a communication module, a navigation module, an anti-seismic module, a supervision system, a control system, an optimized route generation module and a power system; the communication module, the navigation module, the anti-seismic module, the supervision system, the control system, the optimized route generation module and the power system are in bidirectional connection with the processor, thenavigation module comprises a Beidou navigation unit, an image recognition unit and a terrain matching unit, and the power system comprises a wind resistance conversion unit and a power adjustment unit. The invention relates to the technical field of material airdrop accurate positioning. According to the air-drop precise positioning instrument, the precise positioning system is arranged, the navigation positioning and control technology has redundancy, it is powerfully guaranteed that the positioning control technology is effective and available in real time, wind power hybrid power is used as trajectory control power, trajectory adjustment can be conducted by means of wind resistance, and the stability of the motion trajectory is further improved.