29 results about "Solar access" patented technology

The invention discloses a gain method and a gain structure for photoelectric conversion efficiency of a solar panel, the gain method is applied to the solar panel, and at least one light energy gain layer is combined on the surface of the solar panel. The light energy gain layer is of a layered three-dimensional conductive structure formed by uniformly mixing a plurality of conductive carbon-based materials and fluorescent materials on an acceptable transparent carrier, the conductive carbon-based materials are of a two-dimensional structure, the average size of the conductive carbon-based materials and the fluorescent materials is smaller than micrometers, and the transparent carrier is made of transparent thermoplastic plastics. Therefore, invisible light of incident light sources with different wavelengths in sunlight can be effectively absorbed, and visible light is re-radiated from the broadband absorbed incident light sources, so that heat energy can be converted into light energy, light energy entering the solar panel is increased and converted into electric energy, heat energy can be absorbed and converted into electric energy, and the effect of waste heat power generation can be achieved. And the electric energy efficiency of the solar panel is greatly improved.

The invention discloses a photovoltaic photo-thermal hydrogen production and energy storage system based on nanofluid and a phase change material, and relates to the technical field of photovoltaic photo-thermal hydrogen production and energy storage, the system comprises a photovoltaic photo-thermal assembly, a water tank, a solar heat collector and a PEM electrolytic bath; the photovoltaic photo-thermal assembly comprises a photovoltaic cell, a first thermoelectric generator, a nanofluid channel and a composite phase change material which are arranged from top to bottom. The solar heat collector comprises a second thermoelectric generator, a water fluid channel and a composite phase change material which are arranged from top to bottom; mixed nanofluid in the nanofluid channel enters a heat exchange coil in the water tank for heat exchange; water in the water tank firstly enters a water fluid channel of the solar heat collector to be preheated and then enters the PEM electrolytic bath; the mixed nanofluid is composed of BN, MWCNT nanoparticles and pure water; the composite phase change material is composed of BN, MWCNT nanoparticles and paraffin. Efficient output of heat energy, electric energy and hydrogen energy can be achieved.

The invention relates to a coupling energy storage hot dry rock-solar energy combined power generation system and a control method, geothermal water of a hot dry rock well enters a power generation unit after being regulated and controlled by an intelligent regulation and control device, and an organic working medium of the power generation unit exchanges heat with the geothermal water of a heat source unit for power generation; an organic working medium of the power generation unit exchanges heat with cooling water of the cooling unit; according to the geothermal water temperature of the hot dry rock well, it is judged that the hot dry rock-solar reheating peak shaving unit or the hot dry rock-solar coupling energy storage unit is started; the hot dry rock-solar reheating peak shaving unit controls terrestrial heat return water to enter the solar panel A to be heated again, and the hot dry rock-solar coupling energy storage unit controls terrestrial heat outlet water to enter the solar panel B and the energy storage device; the flow entering the evaporator from the heat source unit side is regulated and controlled according to the electricity demand of a user, and dynamic power generation is achieved. The system is simple in composition, small in initial investment, good in economical efficiency and capable of greatly improving the utilization rate and the application range of hot dry rock resources.

Apparatuses, systems and methods for mounting solar power arrays to a supporting surface in a manner that facilitates access to the area beneath the solar power array.

The invention relates to a device and a method for controlling the power supply of a field device (100). The device comprises a rechargeable energy storage device (140), a load (160), and a first switch (144) between the energy storage device (140) and the load (160). Furthermore, the device comprises a solar cell (120) with a cover (121) configured to block light from entering the solar cell (120), thereby switching the field device (100) from normal operation to shipping mode and opening the first switch (144).

A reactive power planning method considering transient voltage stability for large-scale wind and solar access includes the following steps: Step 1: Based on the scenario probability theory, typical scenarios of uncertainty characterizing large-scale wind power and large-scale photovoltaic power are constructed in sequence; Step 2: A transient voltage safety margin index based on a voltage binary table is proposed to guide reactive power planning, and a benchmark scenario for reactive power planning is constructed; Step 3: First, the configuration scheme of the dynamic reactive power compensation device is screened by the improved entropy weighted superior and inferior solution distance method TOPSIS method, and then the final configuration scheme of the dynamic reactive power compensation device is determined by the perturbation method. The method of the present invention takes into account the uncertainty of large-scale wind power and large-scale photovoltaic output, and the resulting planning scheme is applicable to all working conditions, and while ensuring the compensation effect, it saves economic costs to a great extent.

The invention provides a cut-off adhesive film and a photovoltaic module. The light transmittance of the cut-off adhesive film at the wave band of 250-300 nm is 0.5-35%, the light transmittance of the cut-off adhesive film at the wave band of 280-320 nm is 0-10%, and the light transmittance of the cut-off adhesive film at the wave band of 300-320 nm is 0-10%. The full-wave-band ultraviolet cut-off adhesive film can prevent harmful ultraviolet radiation and also can prevent part of beneficial ultraviolet light from entering the solar cell panel unnecessarily. Compared with the prior art, the cut-off adhesive film not only can accurately control the cut-off three ultraviolet bands, so that the cut-off adhesive film more effectively protects the battery from being influenced by specific short-wave ultraviolet light, but also allows ultraviolet light with other wavelengths to continuously provide power benefits for the battery. According to the cut-off adhesive film, the initial power of the photovoltaic module can be improved, the power output stability of the photovoltaic module can be maintained, the performance degradation of the photovoltaic module is reduced, and the service life of the photovoltaic module is prolonged.

The application discloses a kind of solar continuous heating system devices based on gas-water density difference drive, it is related to solar heating technical field, solve the problem of insufficient power of existing solar heating natural circulation structure, high energy consumption of mechanical circulation, high cost.The water outlet of solar water heater, paraffin time energy storage tank device and radiator are sequentially communicated, the water outlet of radiator is communicated by ascending water pipeline and bubble separation device, bubble separation device and solar water heater water inlet are communicated;Ascending water pipeline bottom is provided with hand-pressing type air inflation aeration device;Hand-pressing type air inflation aeration device blows into bubble into pipeline, and provides power for the water circulation in device, and bubble is discharged through bubble separation device.The application utilizes gas-water density difference to realize the circulation drive of water in heating system, realizes cold water backflow, relies on bubble separation device to discharge bubble, avoids gas into solar water heater to influence efficiency and bubble accumulation to generate airlock phenomenon, ensures stable operation of system.

The invention discloses a solar cell piece with high reliability and a preparation method, and belongs to the technical field of photovoltaic solar panel production, and the solar cell piece comprises a suede structure layer, an intrinsic amorphous silicon layer, a doped microcrystalline or amorphous silicon layer, a transparent conductive film layer, a metal auxiliary grid line layer, a protective film layer and a confluence body which are sequentially prepared on the surface of a monocrystalline silicon piece layer, therefore, impurities are prevented from entering the solar cell from the surface of the solar cell. The protective film layer can effectively prevent water vapor or other impurities from invading the solar cell. The metal grid line layer is protected from water vapor corrosion, and the service life of the metal grid line layer is prolonged. And meanwhile, the transparent conductive film layer and the interior of the silicon wafer are protected, impurities are prevented from entering to influence light transmission and further influence the light conversion efficiency of the solar cell, and the attenuation rate of the solar cell is reduced.

The utility model discloses a foldable solar project lamp which comprises a lamp body and a solar cover plate, an installation groove is formed in the top of the lamp body and provided with a connecting portion of a hollow structure, a solar panel is arranged at the bottom of the solar cover plate, and a pair of hinge portions is arranged on the side, corresponding to the connecting portion, of the solar cover plate. A hinge groove is formed between the hinge portions, the hinge groove is arranged on the outer side of the connecting portion in a sleeved mode, a hinge component is arranged in each hinge portion, one end of each hinge component is inserted into the corresponding connecting portion, and the solar cover plate and the lamp body are hinged through the hinge components. The solar cover plate and the lamp body are overturned and folded with the hinge component as the axis, reflected light can be reduced through adjustment of the orientation angle of the solar cover plate, more light enters a solar cell, the overall light absorption and utilization efficiency is improved, and in the transportation process, the transportation efficiency is improved. And the solar cover plate is folded to be stored in the mounting groove of the lamp body, so that the occupied space can be greatly reduced, and the transportation cost is reduced.

The invention relates to a solar cell, a photovoltaic module and a manufacturing method of the solar cell. The solar cell comprises a substrate, an ultraviolet isolation layer and an antireflection film. The ultraviolet isolation layer is arranged on at least one side of the substrate. The antireflection film is arranged on the side, away from the substrate, of the ultraviolet isolation layer. The solar cell is provided with the ultraviolet isolation layer located on the inner side of the antireflection film. The ultraviolet isolation layer serves as a part of the solar cell and can cut off ultraviolet rays which penetrate through the antireflection film and enter the solar cell, so that the ultraviolet rays are difficult to continue to be transmitted inwards. Therefore, under the isolation protection of the ultraviolet isolation layer, the probability of generating hydrogen-induced dangling bonds and the like due to the fact that ultraviolet rays damage silicon-hydrogen bonds is reduced, and the UVID problem of the solar cell is effectively relieved.

The utility model relates to a coupling energy storage hot dry rock-solar energy combined power generation system, geothermal water of a hot dry rock well enters a power generation unit after being regulated and controlled by an intelligent regulation and control device, an organic working medium of the power generation unit exchanges heat with geothermal water of a heat source unit and then generates power, and an organic working medium of the power generation unit exchanges heat with cooling water of a cooling unit; according to the geothermal water temperature of the hot dry rock well, it is judged that the hot dry rock-solar reheating peak shaving unit or the hot dry rock-solar coupling energy storage unit is started; the hot dry rock-solar reheating peak shaving unit controls terrestrial heat return water to enter the solar panel A to be heated again, and the hot dry rock-solar coupling energy storage unit controls terrestrial heat outlet water to enter the solar panel B and the energy storage device; the flow entering the evaporator from the heat source unit side is regulated and controlled according to the electricity demand of a user, and dynamic power generation is achieved. The system is simple in composition, small in initial investment, good in economical efficiency and capable of greatly improving the utilization rate and the application range of hot dry rock resources.

The invention belongs to the field of natural gas power generation, discloses a natural gas differential pressure power generation system based on solar energy and geothermal energy composite heating and a working method thereof, and aims to overcome the defects that in the prior art, a differential pressure power generation system is poor in stability, the temperature of depressurized natural gas is too low, and the power generation efficiency is low. High-pressure natural gas is heated through solar energy and geothermal energy, and the power generation efficiency is improved. By coupling a solar energy and geothermal energy composite heating system and a natural gas pressure difference power generation system, the two systems heat upstream natural gas in a composite mode through solar energy and geothermal energy by sharing a heat exchanger, and the upstream natural gas does work to generate power through a natural gas pressure difference power generation unit after absorbing heat. And the circulating fluid after heat loss enters the solar energy and geothermal energy composite heating system again for circulating energy absorption and heat supply. The problems that downstream natural gas transportation is blocked by ice, the use temperature is low, and conventional reheating energy dependence is high are solved, and full utilization of solar energy and geothermal energy is achieved.

The application discloses a solar energy coupled biomass gasification and chemical chain combustion SOFC combined cooling, heat and power system in the technical field of distributed energy, which comprises a solar energy assisted biomass gasification subsystem, an SOFC power generation subsystem, a supercritical carbon dioxide power cycle subsystem, a chemical chain combustion subsystem and a refrigeration and heat supply subsystem; the system collects solar energy, and the gasification agent, biomass and the gasification agent are reacted to generate synthetic gas for the SOFC power generation subsystem to generate power; the SOFC anode tail gas enters the chemical chain combustion subsystem to perform flameless oxidation and release heat, the high-grade heat released drives the supercritical carbon dioxide power cycle subsystem to perform cascade power generation, and the remaining low-grade waste heat is recycled by the refrigeration and heat supply subsystem to realize the collaborative output of cold, heat and power. The application improves the comprehensive energy efficiency of the system through multi-energy complementation and energy cascade utilization, and realizes carbon dioxide enrichment in the chemical chain combustion subsystem.

Methods and systems are disclosed for automatically determining solar access values, including a method including calculating a ray between a sun position and a structure vertex at a plurality of time periods; comparing a path of the ray to location of points in object point cloud data representative of the size, shape, and location of one or more objects to determine that the object(s) blocks the ray from reaching the vertex, resulting in a shadow over the vertex for at least one of the time periods; determining effects of the shadow over the vertex on the maximum possible irradiance values based on a determined distance and whether the vertex is within an umbra, penumbra, or antumbra of the shadow at at least one of the time periods; and determining irradiance in Watts per time period over the plurality of time periods in which the shadow is over the vertex.

Methods and systems are disclosed that automatically determine solar access values. In one implementation, a 3D geo-referenced model of a structure is retrieved in which geographic location on the earth of points in the 3D geo-referenced model are stored or associated with points in the 3D geo-referenced model. Object point cloud data indicative of object(s) that cast shade on the structure is retrieved. The object point cloud data may be generated from one or more georeferenced images and the object point cloud data is indicative of an actual size, shape, and location of the object(s) on the earth. The structure in the 3D geo-referenced model is divided into one or more sections, which are divided into one or more areas, each area having at least three vertices. Then, a solar access value for the particular vertex is determined.

The invention discloses a PECVD (Plasma Enhanced Chemical Vapor Deposition) process gradient laminated anti-reflection film and a preparation method thereof, and relates to the field of solar cells. The content of PECVD deposition components at the film layer junction of the gradient laminated anti-reflection film is gradually changed. The preparation method comprises the following steps: sequentially depositing the film layer I, the film layer II and the film layer III through a PECVD (Plasma Enhanced Chemical Vapor Deposition) method, namely starting auxiliary heating to preheat the furnace tube, starting vacuumizing, pre-depositing the film layer I, the film layer I, the film layer II and the film layer III, and evacuating residual gas in the furnace tube. Through the gradual change design of the laminated anti-reflection film, the refractive index between the film layers is changed in a gradient manner. Therefore, when light enters the solar cell, smooth transition between different film layers can be realized, and the reflection loss of the light is effectively reduced. Light reflection caused by sudden change of the refractive index at the junctions of the film layers made of different materials is avoided, the anti-reflection effect is improved, the light absorption rate is increased, the short-circuit current and the open-circuit voltage are increased, and the photoelectric conversion efficiency is improved.

The present invention discloses a transmission network expansion planning method based on wind and solar access, relating to the field of smart grid technology, and primarily focusing on improving the efficiency and accuracy of transmission network expansion planning. The method comprises: obtaining wind power attribute data of wind power generation equipment, photovoltaic attribute data of photovoltaic power generation equipment, load attribute data corresponding to the planned transmission network, and grid attribute data; determining wind power output data based on the wind power attribute data, photovoltaic output data based on the photovoltaic attribute data, and load absorption data based on the load attribute data; determining multiple transmission expansion planning schemes based on the aforementioned data; inputting evaluation data composed of the grid attribute data and each transmission expansion planning scheme into a preset transmission expansion planning model to predict planning effect parameters, thereby obtaining each planning effect parameter; and determining, based on each planning effect parameter, a target transmission expansion planning scheme after accessing the wind and solar power generation equipment in each transmission expansion planning scheme.

The invention discloses a voltage out-of-limit risk assessment method for a wind and light access power distribution system, and the method comprises the following steps: 1, carrying out the time-segmented processing of the irradiance and wind speed in a distributed power supply probability model, and carrying out the day and night segmented sampling through Monte Carlo, so as to generate a large number of wind and light scenes; 2, carrying out load flow calculation on a large number of wind and light scenes generated in the step 1 to obtain voltage data of each node; 3, fitting the voltage data in the step 2 by adopting a Gaussian mixture model to obtain a voltage probability density function; and 4, according to the voltage probability density function in the step 3, further calculating the voltage out-of-limit probability and the voltage comprehensive evaluation index of the node. According to the method, no matter how complex the distribution form of voltage data is, real distribution can be approached by adjusting parameters of each Gaussian component, so that the voltage out-of-limit probability and the voltage comprehensive risk index of each node are accurately calculated.

The invention provides a solar cell, a preparation method thereof and a photovoltaic module. The solar cell includes: a cell base; the fine grid lines are arranged on the light receiving surface of the cell substrate; the covering film covers the surfaces of the fine grid lines, and the reflectivity of the covering film to visible light is 50%-95%. The film has high reflectivity and can reflect most of light irradiated to the thin grid lines, so that at least part of the reflected light is irradiated to an effective light absorption area of gaps of the thin grid lines in the solar cell, the light absorbed by the area enters the solar cell for photoelectric conversion, and the sunlight absorption rate of the solar cell is improved. The short-circuit current density of the solar cell is improved, and the photoelectric conversion efficiency of the cell is improved; light is reflected by the covering film, and most of the light is prevented from irradiating the surfaces of the thin grid lines, so that light energy absorption of the thin grid lines can be reduced, heat generation can be reduced, corrosion to the thin grid lines is effectively slowed down or avoided, and the stability and reliability of the thin grid lines are improved.

A solar cell including at least a first layer made of a semiconductor material for absorbing photons from light radiation and releasing charge carriers, and at least one conductive layer, overlapping the first layer, adapted to allow the light radiation to enter into the solar cell towards the first layer and to collect the charge carriers released by the first layer, the solar cell where the conductive layer includes at least three overlapped layers, including a transparent intermediate metal layer, made of metal, and two transparent oxide layers, made of a conductive oxide, where the two oxide layers are an inner oxide layer and an outer oxide layer surrounding the transparent intermediate metal layer to provide a low resistance path for the electrical charges and to maximize the amount of light radiation entering the solar cell. The embodiments also include a solar cells module including said solar cell.

The invention discloses a solar continuous heating system device based on gas-water density difference driving, relates to the technical field of solar heating, and solves the problems that an existing solar heating natural circulation structure is insufficient in power, high in mechanical circulation energy consumption and high in cost. A water outlet of a solar water heater, a paraffin time-sharing energy storage tank device and a heating radiator are sequentially communicated, a water outlet of the heating radiator is communicated with a bubble separation device through an ascending water pipeline, and the bubble separation device is communicated with a water inlet of the solar water heater; a hand pressure type inflating and aerating device is arranged at the bottom of the ascending water pipeline; the hand-pressing type inflating and aerating device injects bubbles into the pipeline to provide power for water circulation in the device, and the bubbles are discharged through the bubble separating device. Circulation driving of water in the heating system is achieved through the gas-water density difference, cold water backflow is achieved, bubbles are discharged through the bubble separation device, the phenomenon that gas enters the solar water heater to affect efficiency and the phenomenon of air blocking caused by bubble accumulation are avoided, and stable operation of the system is guaranteed.

The present invention provides an inspection device for solar cell modules that is the same color as or similar to the majority of the solar cell and can detect foreign matter that has entered between the solar cell and the sealing glass. [Solution] A solar cell module comprising a sealing glass, a sealing member, and a solar cell sandwiched between the sealing glass and the sealing member, is used to detect foreign objects that are the same color as or similar in color to most of the solar cell between the sealing glass and the solar cell, and comprises an imaging unit, an illumination unit that irradiates the irradiated portion of the solar cell through the sealing glass with illumination light having a maximum peak in the wavelength range of over 380 nm and up to 430 nm from a direction inclined with respect to the imaging axis of the imaging unit, and a foreign object detection unit that receives reflected light from the irradiated portion and detects foreign objects based on the image captured by the imaging unit, wherein the solar cell has a reflectance of 5% or more of the illumination light and a reflectance greater than that of the foreign object.

The application discloses a photovoltaic photo-thermal hydrogen production and energy storage system based on nanofluid and phase change material, and relates to the technical field of photovoltaic photo-thermal hydrogen production and energy storage, which comprises a photovoltaic photo-thermal component, a water tank, a solar heat collector and a PEM electrolytic cell; the photovoltaic photo-thermal component comprises, from top to bottom, a photovoltaic cell, a first thermoelectric generator, a nanofluid channel and a composite phase change material; the solar heat collector comprises, from top to bottom, a second thermoelectric generator, a water fluid channel and a composite phase change material; mixed nanofluid in the nanofluid channel enters a heat exchange coil in the water tank to perform heat exchange; water in the water tank is first preheated in the water fluid channel of the solar heat collector and then enters the PEM electrolytic cell; the mixed nanofluid is composed of BN, MWCNT nanoparticles and pure water; and the composite phase change material is composed of BN, MWCNT nanoparticles and paraffin wax. The application can realize efficient output of heat energy, electric energy and hydrogen energy.

The invention provides a solar cell, a solar cell module and a power utilization device, and the solar cell comprises a photoelectric conversion layer which comprises perovskite type compound crystal particles and a water absorption material. The solar cell module can prolong the service life of the solar cell device. When water in an external environment including the atmosphere enters the photoelectric conversion layer of the solar cell, the water absorption material absorbs the water, and at least reduces the influence of the water on the perovskite compound, thereby protecting the perovskite compound crystal particles, facilitating the photoelectric conversion of the perovskite compound crystal particles, and improving the photoelectric conversion efficiency of the solar cell. And the power generation stability of the solar cell is improved.

The invention relates to a flexible DC power distribution network fault recovery optimization method and system based on an improved genetic algorithm, a computer terminal and a readable storage medium, and is suitable for a high-proportion wind and light access scene. The method comprises the following steps: constructing a multi-scene recovery model fusing wind power and photovoltaic uncertainty, and generating a typical wind and light power scene by adopting Monte Carlo sampling; establishing a recovery optimization model by taking the maximum load recovery amount and the minimum network loss as targets; based on voltage source converter control constraints, an improved genetic algorithm is designed, and optimization efficiency and solution feasibility are improved through adaptive crossover, variation and parallel evaluation. According to the method, the recovery capability and the operation stability of the flexible direct current power distribution network under the fault can be improved, the method is suitable for a power distribution system with high new energy permeability, and compared with other fault recovery methods and traditional optimization methods, the method is more effective in improving the load recovery amount and reducing the active loss of the network.

A solar water heater absorber absorbs the sun's energy on the surface of a twin-walled polycarbonate panel and conducts the heat from the sun through the panel wall into fluid flow through channels of the panel. The panel is an extruded polycarbonate glazing material that consists of two panes connected by longitudinal ribs to form a plurality of water channels that may further include twisted strips providing a helical water flow pattern that increases turbulence within the water channels. The panel is connected to large pipes or headers on the top and bottom ends of the panel that receive the heated fluid from the water channels, allow the heated fluid to exit the panel, and for return water to re-enter the panel in a solar water heating system.

The utility model is suitable for the technical field of cleaning, and provides an automatic pipe feeding device of a solar vacuum heat collecting pipe, which comprises a bottom plate, the solar vacuum heat collecting pipe to be cleaned is placed on a material guide plate, the material guide plate is inclined, the heat collecting pipe can roll into a containing groove on the material guide plate, and the heat collecting pipe can be automatically conveyed. Only one heat collecting pipe can be contained in the containing groove at a time, negative pressure is generated by the adsorption holes through work of the negative pressure pump so that the heat collecting pipes can be adsorbed to the inner wall of the containing groove through negative pressure, the rotating drum carries the heat collecting pipes to rotate to the uppermost portion through driving of the output end of a second motor, and the heat collecting pipes are driven by extending of the telescopic end of an electric hydraulic rod and driving of the output end of a first motor. The cleaning rod enters the solar vacuum heat collecting pipe to clean the inner wall of the solar vacuum heat collecting pipe, the cleaned heat collecting pipe is driven by the output end of the second motor to rotate to the lower portion, the negative pressure pump stops working, the heat collecting pipe falls off from the containing groove, manual feeding and discharging are not needed, and the working efficiency of equipment is improved.