17 results about "Direct solar radiation" patented technology

The invention provides a photovoltaic panel solar radiation quantity prediction method and device. The method comprises the steps of collecting a sky image and synthesizing the sky image into an HDR image; analyzing sky radiation information according to the HDR image; establishing a real-time sky model according to the sky radiation information; and calculating the incident radiation quantity of the photovoltaic panel, wherein the incident radiation quantity of the photovoltaic panel comprises direct solar radiation, sky scattering radiation and ground reflection radiation. According to the photovoltaic panel solar radiation quantity prediction method and device provided by the invention, the prediction of the solar radiation quantity of the photovoltaic panel in a complex shielding environment is realized, and the defect that an ideal sky model cannot describe an actual external environment is effectively avoided by constructing a shielding-oriented high-resolution sky radiation field; through fusion of the HDR image and the real-time sky model and in combination with the shielding relationship, the distribution accuracy of the incident radiation on the surface of the photovoltaic panel in time and space dimensions is improved.

The application relates to a photovoltaic array layout optimization method and device based on irradiation and shadow dynamic coupling, and the method comprises the following steps: constructing a total irradiance model about a photovoltaic component inclination angle and a photovoltaic component azimuth angle according to direct solar radiation, scattering radiation and reflected radiation of the inclined surface of the photovoltaic component; calculating a shadow loss factor by combining a critical unshaded spacing and an actual spacing of front and rear rows of the photovoltaic component array, and coupling the shadow loss factor to the total irradiance model to obtain an effective irradiance model; constructing an optimization objective function based on the effective irradiance model by taking the maximization of annual effective irradiance as an optimization objective; and adopting the lemur optimization algorithm to perform comprehensive balance optimization of dynamic irradiance benefits and shadow losses on the optimization objective function by taking the photovoltaic component inclination angle, the photovoltaic component azimuth angle and the actual spacing as optimization variables to obtain an optimal variable combination. The application can solve the core problems of large irradiation calculation error, static shadow evaluation and low optimization efficiency.

The utility model discloses a crane cooling mechanism of a gantry bridge crane, and belongs to the technical field of gantry bridge cranes. A lifting appliance is arranged at the top of the vehicle body, a motor is fixed at the top of the vehicle body, and a motor driving end is in transmission connection with a power receiving end of the lifting appliance; a supporting plate is fixed to the outer wall of the vehicle body, a protective shell is slidably connected to the top of the supporting plate, a reflective heat insulation coating is arranged on the top of the protective shell, two rows of symmetrical ventilation grids are arranged on the outer wall of the protective shell, an opening is formed in one end of the protective shell, the protective shell covers the motor through the opening, and a fan is fixed to one end of the protective shell. According to the utility model, when the motor of the vehicle body operates in a hot day with direct solar radiation outdoors, the protection shell is utilized to increase the heat dissipation capability for the motor, and the cooling and heat dissipation efficiency is greatly improved.

Solar thermal collectors primarily utilize direct solar radiation and minimize convective heat exchange with the environment. This has the advantage of allowing high temperatures, far exceeding the ambient temperature, to be achieved. A disadvantage is that the heat from the ambient air cannot be utilized, even when there is no direct solar radiation. According to the invention, this disadvantage is overcome by providing the housing containing the actual collector, through which the heat transfer medium flows, with at least two openings. These openings are tightly closed by flaps or similar devices when direct solar radiation is sufficiently high, but can be opened when needed, i.e., when direct solar radiation is low, allowing air to flow over the actual collector, either by natural draft or driven by a fan.The opening and closing of the flaps or similar devices, and the operation of any fan (if present), are controlled by a system that calculates and compares the heat gain from direct solar radiation and airflow, and reacts accordingly by switching the fan on or off and opening or closing the flaps. A further control system, depending on the temperature of the heat transfer medium and the hot water in the storage tank, as well as the heating demand, determines whether the heat transfer medium is used to further heat the hot water in the storage tank or to power a heat pump.

This invention relates to the field of ground-based direct solar radiation measurement and correction technology, and particularly to an field measurement correction method suitable for SIAR solar radiation reference meters. The method includes the following steps: coaxially pointing the SIAR solar radiation reference meter and the instrument under test towards the observation target, initiating synchronous measurement, and reading the last heating power value; adjusting the electric heating power using the E-index model during both the optical measurement and electrical calibration stages; performing smoothing filtering based on the electrical calibration heating power results to achieve smooth correction of the radiation power of the instrument under test; acquiring temperature data from a temperature sensor, and calculating the radiation power temperature correction result based on a multi-parameter temperature correction model; repeating the steps to perform multiple sets of synchronous comparison tests, obtaining the comparison coefficient, and achieving correction. This method solves the problems of excessive jitter and calibration deviations at different temperatures in existing solutions during field testing, enabling shorter measurement times, more consistent steady-state results, and long-term consistency.

The invention relates to the technical field of light beam reconstruction, discloses a multi-aperture imaging type light beam reconstruction system for solar direct radiation simulation, and solves the problems of large solar field angle, poor irradiation uniformity and contradictory energy utilization rate of a traditional system. The system comprises a first micro-lens array, a second micro-lens array and a collimation integral lens which are arranged in sequence, the MLA1 and the MLA2 are 9 * 9 arrays, the focal lengths and the diameters of the sub-lenses are consistent, and the distance between the two arrays is equal to the focal length of the MLA1; and the collimation integrating lens is matched with the micro lens array to realize light beam collimation superposition. After reconstruction, the solar field angle is 31.6 ', the irradiation nonuniformity of the working condition of AM0G / AM1.5 G is 0.95% and 0.77% respectively, the power in a barrel in a sampling interval of 184mm * 184mm of a target surface is 97.51%-98.58%, the defocusing amount of-150 mm to 150 mm and the inclination angle of-24 degrees to 24 degrees still meet the IEC 60904-9: 2020 A + level, and the device is suitable for high-precision light beam regulation and control of direct solar radiation simulation.

The utility model provides a photovoltaic tile, relates to the field of photovoltaic technology, and aims to solve the problem that a battery layer is easily damaged due to the fact that the battery layer is directly connected with an aerogel felt in a conventional photovoltaic tile in the prior art. The utility model provides a photovoltaic tile, which is of a curved surface structure and comprises a light-transmitting panel, a light-transmitting layer, a light-transmitting layer and a light-transmitting layer, the battery layer is arranged on one side of the light-transmitting panel; the reinforcing plate is arranged on one side, far away from the light-transmitting panel, of the battery layer; and the aerogel heat insulation layer is arranged on one side, far away from the battery layer, of the reinforcing plate. The photovoltaic tile is of the curved surface structure, the photovoltaic tile of the curved surface structure can receive direct solar radiation light to the maximum extent, and the photoelectric conversion efficiency is high. The reinforcing plate is arranged between the aerogel heat insulation layer and the battery layer, so that the impact resistance of the side, where the aerogel heat insulation layer is located, of the battery layer can be improved. In addition, compared with conventional fireproof materials such as high-flame-retardant glass fiber resin plates, the aerogel heat insulation layer is better in fireproof effect.

The present application relates to a kind of solar field cloud shelter monitoring and control method, system based on multisensor data fusion.The method includes: the low-density scattered solar radiation sensor network and high-density overall solar radiation sensor network are cooperatively collected basic data in deployment, combined with adaptive filtering technique to filter noise interference, then based on the inverse deduction direct solar radiation intensity of radiation balance equation;While aiming at shelter area, non-shelter area uses differentiated interpolation and extrapolation method;Through convolutional neural network, cloud layer features are extracted, cloud movement trajectory and shelter range are predicted;Introduce geographic information system data, according to the projection length and shape of topographic relief correction cloud shadow;While fusing meteorological satellite data and cloud height data to construct cloud layer three-dimensional model;Based on direct solar radiation intensity distribution map and cloud shelter trajectory prediction result, the working state of heliostat in shelter area is dynamically adjusted, to avoid invalid operation and energy waste.

The invention discloses an all-sky background radiometer full-channel calibration method based on spectral inversion, and the method comprises the steps: obtaining a discrete response value of a non-absorption wave band of an all-sky background radiometer based on solar direct radiation and a Langley calibration method in combination with the solar irradiance of an atmospheric boundary layer, the atmospheric relative quality and a sun-ground distance correction factor; a solar direct radiation and gas absorption calibration method is utilized, a gas absorption effect is considered, and a discrete response value of an absorption wave band is calculated through inversion of the total amount of water vapor; determining a full-band discrete irradiance calibration coefficient based on the discrete response values of the non-absorption band and the absorption band; fitting by using the full-band discrete irradiance calibration coefficient and adopting an interpolation algorithm to obtain a full-band instrument irradiance calibration function; and transmitting an instrument irradiance calibration function to the direct incidence channel and the scattering channel, and obtaining radiance calibration coefficients of the direct incidence channel and the scattering channel in combination with the field angle and the attenuation coefficient of the optical filter, thereby completing full-channel calibration.

The invention discloses a photovoltaic energy storage integrated street lamp charging pole, and relates to the technical field of photovoltaic charging, the photovoltaic energy storage integrated street lamp charging pole comprises a street lamp pole body, a photovoltaic panel is installed above the street lamp pole body, an energy storage auxiliary mechanism is arranged in the street lamp pole body, and the energy storage auxiliary mechanism comprises an angle adjusting assembly and a temperature adjusting assembly; the photovoltaic panel is obliquely arranged at a low elevation angle and towards the south, the state adapts to the astronomical characteristics that after a direct solar radiation point moves north at the stage, the solar elevation angle is large, and the standing time in the south area and the south area is long, the low elevation angle enables the panel surface of the photovoltaic panel to be closer to the level, and more solar energy directly acts on a photoelectric conversion area of the photovoltaic panel. And the light energy yield and the photoelectric conversion efficiency in unit time are remarkably improved, the problem that the power generation efficiency of a traditional fixed-angle photovoltaic panel is attenuated due to insufficient direct light in summer is solved, and more sufficient energy guarantee is provided for subsequent energy storage and charging functions.

The application discloses a kind of high-precision automatic ground-air radiometer observation methods, based on the nine observation modes set, through a high-precision automatic ground-air radiometer, solar direct radiation illumination, sky radiation illumination, vertical ground radiation brightness, satellite remote sensor observation angle ground radiation brightness are obtained, aerosol optical thickness, particle distribution, phase function, vertical ground reflectivity, satellite remote sensor synchronous ground reflectivity, sky diffuse irradiance and other parameters are inverted, calibration field long sequence spectral parameters are obtained, calibration field atmosphere, ground spectral characteristics change trend is analyzed, and field automation calibration precision is improved.

The invention relates to a Fraunhofer spectral line benchmark-based generation and calibration method and system and a medium, and the method comprises the steps: measuring direct solar radiation spectrums at different solar zenith angles through a foundation spectrum instrument, and calculating the atmosphere quality of each spectrum measurement moment in each direct solar radiation spectrum; calculating solar spectral irradiance at the top of the earth atmosphere; selecting a non-absorption wave band which is not interfered by the atmosphere according to the atmosphere transmittance; and searching a Fraunhofer line in a non-absorption wave band, and carrying out spectrum calibration on a foundation spectrum instrument. According to the invention, the calibration does not need a laboratory standard lamp, and the problems of standard lamp attenuation and transmission errors are avoided; according to the method, areas which are not affected by the atmosphere in the spectrum can be distinguished and utilized, the method is not affected by the atmosphere, the method has good precision and long-term stability, the Fraunhofer line area AM0 spectrum extrapolation precision is improved, and the foundation spectrum instrument is calibrated by using the stable Fraunhofer line.

The present disclosure provides a photovoltaic panel solar radiation prediction method and device, the method comprising collecting sky images and synthesizing HDR images; analyzing sky radiation information according to the HDR images; establishing a real-time sky model according to the sky radiation information; and calculating the incident radiation of the photovoltaic panel, which includes direct solar radiation, sky scattered radiation and ground reflected radiation. The photovoltaic panel solar radiation prediction method and device provided by the present disclosure realize the prediction of the photovoltaic panel solar radiation in a complex shielding environment, effectively avoid the defect that the ideal sky model cannot describe the actual external environment by constructing a high-resolution sky radiation field facing the shielding; and improve the distribution accuracy of the photovoltaic panel surface incident radiation in the time and space dimensions by fusing the HDR images and the real-time sky model and combining the shielding relationship.

The invention relates to the technical field of photoelectric conversion evaluation, and discloses a photoelectric conversion efficiency evaluation method and system for a fishpond-light complementary photovoltaic power station, and the method comprises the steps: collecting the visible light reflection intensity and the direct solar radiation intensity through a multispectral reflection sensor array on the water surface of a fishpond; water wave fluctuation influence is identified through time domain feature analysis, and deviation correction is carried out on reflection data in combination with adaptive filtering; obtaining the voltage and current of the maximum power point of the photovoltaic array, the temperature of a module backboard and the environment temperature; the real-time water surface reflectivity is calculated based on the corrected ratio of the reflected light intensity to the direct light intensity, the incident solar radiation flux is dynamically corrected, and the effective incident solar radiation flux is obtained; and calculating the photoelectric conversion efficiency according to the maximum power point power, the effective incident radiation flux and the temperature data, and generating an evaluation report. According to the invention, a traceable data basis is provided for photovoltaic operation and maintenance, power prediction and performance diagnosis of the fishing-light complementary photovoltaic power station.

The application discloses a solar direct radiation simulation system based on grating inverse dispersion, aiming at solving the bottleneck that the traditional system irradiance and solar opening angle are mutually restricted and cannot match AM0G / AM1.5G dual spectrum at the same time. The system comprises a spectrum modulation optical engine, a diffraction beam combining system and a multi-aperture imaging reconstruction system which are coaxially arranged in sequence. The solar opening angle reaches 28.8', the AM0G / AM1.5G working condition irradiance is 1450.54 W / m2 and 1398.80 W / m2 respectively, and the spectrum matching and non-uniformity both meet the IEC60904-9:2020 A+ level, so that the system can be used in the fields of spacecraft testing, solar energy conversion and the like.

1. Name of the designed product: direct radiation meter. 2. Use of the designed product: for measuring direct solar radiation. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view 1.