46 results about "Concentrated solar power" patented technology

The invention discloses a concentrating solar photo-thermal power generation intelligent control system based on a digital twinborn model and a real-time monitoring method, the concentrating solar photo-thermal power generation intelligent control system based on the digital twinborn model comprises a physical information layer, an equipment-level model, a data-driven model, a digital fusion layer and a functional layer; the problem that in the prior art, due to the fact that the state of condensation type solar photo-thermal power generation cannot be monitored in real time, efficiency reduction or assembly faults are caused is solved, and it is ensured that the system operates in the optimal state. The method is suitable for real-time monitoring, fault diagnosis, efficiency optimization and power grid cooperative control of tower-type, groove-type and other concentrating photo-thermal power generation systems.

A method of forming a concentrated solar power system for generating electricity. The method has three steps. The first step is coupling a plurality of tower segments together onsite at a solar energy concentration field to form a solar tower in a lowered orientation. At least one solar receiver is coupled to the solar tower to form a solar tower assembly. The second step is raising the solar tower assembly to a solar energy collection orientation by pivoting the solar tower assembly about a pivot axis located at a bottom portion of the solar tower. The third step is securing the solar tower assembly in the solar energy collection orientation.

The invention discloses a silicate GO intercalation corrosion inhibitor for quaternary molten nitrate and preparation and application thereof, and relates to the technical field of heat storage materials. In the silicate-GO intercalation corrosion inhibitor, GO layers are main body frames and are in a two-dimensional layer shape, layered silicate is inserted between the GO layers, and the orientation of the layered silicate is parallel to the orientation of the GO layers. The silicate-GO intercalation corrosion inhibitor is added into quaternary nitric acid molten salt, and the addition amount of the silicate-GO intercalation corrosion inhibitor is 0.4 wt%-5.0 wt%. The corrosion inhibitor with a two-dimensional intercalation composite structure is prepared by organizing silicate and alkylating GO, so that the stability and dispersity of the high-temperature quaternary nitric acid molten salt are promoted, the corrosion of the high-temperature quaternary nitric acid molten salt to a metal matrix in high-temperature energy systems such as concentrated solar power generation is slowed down, and the long-term stable operation of the high-temperature molten salt energy system is supported.

A concentrated solar power system having a solar energy collection subsystem. The solar energy subsystem has tower extending along a tower axis and a first solar energy receiver movably mounted to the tower. The first solar energy receiver is alterable between a first state and a second state while remaining mounted to the tower, and the first solar energy receiver contains a first heat exchange fluid.

The application discloses a kind of based on attention mechanism and reinforcement learning's ultra-short-term DNI prediction method, comprising: collecting solar thermal power station historical measured direct normal irradiance data and meteorological characteristic data;Periodic time characteristics and historical lag term are introduced to enhance time series dependence;Utilize bidirectional long short-term memory network to extract DNI time series features, construct attention mechanism based on dynamic change of cloud amount, strengthen the response capability of model to weather mutation;Adopt KAN to replace traditional full connection to high-dimensional nonlinear characteristics Adaptive function approximation is carried out;Introduce PPO reinforcement learning algorithm, dynamically optimize model feature representation and parameter, realize error self-feedback correction;Output DNI prediction result, for the dispatching and operation control of concentrating solar thermal power generation system.The method can effectively improve the DNI prediction accuracy and robustness under complex weather conditions, provide high-precision prediction support for photo-thermal power generation and renewable energy grid connection.

The application discloses a heterogeneous energy collaborative prediction and scheduling method considering source-load low-carbon characteristics complementation and matching, relates to the technical field of power system source-load prediction and low-carbon scheduling, and comprises the following steps: based on Laguerre polynomials, pseudo-inverse learning and integrated learning, robust local mean decomposition (RLMD) and weighted permutation entropy (WPE), a wind power (WP), photovoltaic power (PVP) and power load (PL) prediction model is constructed, which takes into account the prediction accuracy and stability; a HECM mathematical model is constructed, the HECM mathematical model framework comprises an integrated flexible operation mode of carbon capture power plant (IFCCPP), a wind farm (WF), a photovoltaic power station (PP), a concentrated solar power (CSP), a load active demand response (LADR), a ladder carbon trading mechanism (LCTM), an objective function and related constraints; in the source-load prediction, the two targets of accuracy and stability are considered simultaneously, a compromise solution is selected in the Pareto frontier through the MORUN algorithm, and the wind power, photovoltaic power and power load prediction results are more suitable for the power system scheduling scene with high robustness requirements.

A parabolic trough solar collector for concentrated solar power (CSP) applications includes a solar concentrator, a central mount to which the solar concentrator is coupled, and a receiver tube fixed at a focal point above the solar concentrator. The solar concentrator is operable to actuate relative to a single axis through the receiver tube. The surface of the solar concentrator is arranged with a fixed slope relative to a horizontal plane.

The invention relates to the field of tower-type photo-thermal power generation systems, and provides a fused salt heating method for an integrated system before full-load test operation of a tower-type photo-thermal power station. The heating method comprises the steps that a low-temperature fused salt pump pumps fused salt in a low-temperature fused salt storage tank into a heat absorber, the fused salt is heated through the heat absorber, whether the temperature of the heated fused salt is larger than a second temperature or not is judged, when the temperature of the fused salt is larger than the second temperature, the fused salt flows to a high-temperature fused salt storage tank, and when the temperature of the fused salt is smaller than the second temperature, the fused salt flows back to the low-temperature fused salt storage tank; the flow of the low-temperature molten salt pump is controlled, so that the temperature of the molten salt entering the high-temperature molten salt storage tank is increased to a third temperature; the high-temperature fused salt pump pumps the fused salt with the third temperature in the high-temperature fused salt storage tank into the steam generation system; and the fused salt passing through the steam generation system flows back to the low-temperature fused salt storage tank, is heated to a fourth temperature through the heat absorber, and flows to the high-temperature fused salt storage tank. According to the heating method provided by the embodiment of the invention, the thermal stress impact of the storage tank and the heat absorber can be reduced.

This invention discloses a ternary chloride salt thermal storage material that balances thermal storage performance and corrosion resistance, along with its preparation method. The thermal storage material is obtained by adding metal and metal oxide nanoparticles to a ternary molten salt composed of sodium chloride, potassium chloride, and magnesium chloride. The thermal storage performance of the ternary molten salt is enhanced through the interaction between the nanoparticles and the chloride salt; simultaneously, the interaction between the nanoparticles and the corrosive surface of the alloy pipe forms a corrosion-resistant layer or consumes corrosive components, achieving automatic corrosion prevention; and new nanoparticles can be replenished in the thermal storage tank as needed based on their consumption. The ternary chloride salt thermal storage material prepared by this invention exhibits excellent thermal storage performance, strong corrosion resistance, and low price; moreover, its preparation method is simple, efficient, low-cost, and convenient to operate, effectively overcoming the shortcomings of traditional molten chloride salts, such as poor thermal performance and strong corrosivity, and can be used as a high-temperature thermal storage / heat transfer medium in concentrated solar power generation systems.

This disclosure provides a method and apparatus for predicting the DNI (Distribution-Influenced National) of a concentrated solar power (CSP) plant, relating to the field of prediction technology. The method includes: acquiring monitoring data of DNI prediction influencing factors for a first time period and forecast data of DNI prediction influencing factors for a second time period, centered on the target CSP, within a predetermined spatial range; preprocessing the acquired monitoring and forecast data; constructing model input features for predicting the DNI at the i-th time point within the prediction time period based on the preprocessed data; generating a sequence of predicted DNI points within the prediction time period based on the model input features and a pre-trained DNI prediction model; generating a prediction uncertainty interval based on the DNI point prediction value sequence; and outputting the final result of the DNI prediction for the target CSP. Based on this scheme, the accuracy of dynamic prediction of the CSP's DNI can be improved.

The invention belongs to the technical field of heat storage materials, and particularly relates to a mixed nano fused salt material suitable for a high-temperature working condition as well as a preparation method and application of the mixed nano fused salt material. The mixed nano molten salt material is prepared by taking ternary carbonate composed of lithium carbonate, sodium carbonate and potassium carbonate as a matrix and introducing at least one kind of nano particles or a composite system of multiple kinds of nano particles, and the nano particles are selected from metal oxides, metal carbides, metal nitrides or carbon-based nano materials. The microstructure and interface characteristics of the ternary carbonate fused salt are regulated and controlled through the high specific surface area and the interface synergistic effect of the nano-particles, so that the specific heat capacity, the heat-conducting property and the photo-thermal conversion capacity of the ternary carbonate fused salt are remarkably improved, and the high-temperature cycling stability of the ternary carbonate fused salt is improved. According to the mixed nano fused salt material, on the premise that the original working temperature interval is basically unchanged, synergistic enhancement of multiple thermophysical properties is achieved, and the mixed nano fused salt material has excellent heat absorption and storage performance and long-term operation stability. The preparation method is simple in process and high in repeatability, and the obtained mixed nano fused salt material is suitable for integrated application of high-temperature heat storage and heat absorption in a concentrating solar power generation system and has a good engineering application prospect.

The invention discloses a distributed energy system of a coupling concentrating solar energy driven carbonaceous particle gasification and SOFC-MGT hybrid power generation device. Comprising a concentrating solar heat storage system, a carbonaceous particle gasification system, a high-temperature purification system, a synthesis gas storage system, a solid oxide fuel cell-gas turbine hybrid power generation system and an organic Rankine cycle power generation system. The concentrating solar heat storage system is used for providing heat for the carbonaceous particle gasification system and providing raw materials for circular reaction of the carbonaceous particle gasification system; the carbonaceous particle gasification system drives carbonaceous particles to be gasified; the high-temperature purification system is a primary energy storage device and is used for storing surplus heat in the daytime; a secondary energy storage device of the synthesis gas storage system is a synthesis gas storage tank and is used for meeting continuous operation in cloudy and rainy days and winter; the solid oxide fuel cell-gas turbine hybrid power generation system is a primary power generation device; the organic Rankine cycle power generation system is a two-stage power generation device, and the power generation efficiency of the system is fully improved.

This application discloses a mirror tracking angle control system and method for a temperature-controlled concentrated solar power (CSP) system. Existing CSP systems often rely on fixed mirror angle adjustment strategies, which cannot respond promptly to complex changes in illumination and temperature, resulting in low heat collection efficiency. This system, through the collaboration of multiple intelligent modules such as data acquisition, illumination prediction, temperature prediction, and mirror adjustment, can adjust the collector angle in real time and accurately, maximizing illumination reception efficiency and optimizing heat collection effect. In addition, the system also uses a heat collection efficiency detection and feedback module to ensure that angle adjustment does not affect heat collection efficiency and makes the operation more intelligent and automated. Overall, this temperature-sensing-based joint adjustment method improves the adaptive capability, heat collection efficiency, and system stability of the CSP system, overcoming the lag and instability of traditional technologies.

The application discloses a concentrated solar spectrum reforming power generation system matched with high band gap battery, which focuses solar radiation energy to the opening of a cavity type absorber through a concentrator, so that the absorber is heated to a high temperature, and converts the solar radiation energy into heat energy; a specially designed selective radiator is closely arranged on the outer wall of the absorber; the radiator can be heated to the same high temperature as the absorber; the high band gap photovoltaic battery is arranged in parallel with the radiator; the radiator with the selective radiation characteristic radiates the reforming spectrum corresponding to the temperature; the heat energy is converted into the reforming radiation energy again; the reforming spectrum and the absorption spectrum of the high band gap battery are well matched; the radiation energy is efficiently converted into electric energy; and a high solar thermal photovoltaic conversion efficiency can be realized. The cavity structure absorber is adopted in the application, and the whole power generation system can realize a solar conversion efficiency of more than 37%, and has important application value.

This application discloses an online monitoring system for molten salt parameters, relating to the field of intelligent monitoring and diagnostic technology. The online monitoring system selects a first pipe with a curvature less than a preset threshold as the measurement segment in a concentrated solar power (CSP) plant, and installs pressure testing devices at both ends, constructing an online measurement structure based on the pressure difference principle. This system achieves real-time, in-situ monitoring of molten salt viscosity, overcoming the problems of poor timeliness and inability to reflect real-time operating status in traditional offline sampling and analysis. The limitation on pipe curvature ensures the stability of fluid flow, allowing the measured pressure difference to accurately reflect the viscous resistance of the molten salt. This solution has a compact structure, is easy to deploy in engineering, and provides stable and reliable technical support for real-time perception of the molten salt status, operational risk assessment, and early warning decision-making in CSP plants.

A stand-alone power plant highly integrated with solar-based renewable energy sources is disclosed. The power plant comprises at least one power unit connected to a combined cycle gas turbine power plant and to a photovoltaic power generation unit, and a concentrated solar power generation unit is incorporated into the combined cycle gas turbine power plant. The thermal energy storage unit is also part of the power plant to collect heat from the CSP and optionally from the PV unit and to supply heat to the second thermodynamic cycle. Also disclosed is a method for operating a power plant by minimizing, even thoroughly eliminating, long-term and short-term fluctuations.

The application discloses a silicate GO intercalation corrosion inhibitor for quaternary nitric acid molten salt and preparation and application, and relates to the technical field of heat storage materials.The GO layer is a main frame and is a two-dimensional layer, and the layered silicate is inserted between the GO layers, and the orientation of the layered silicate is parallel to the GO layer.The silicate GO intercalation corrosion inhibitor is added into the quaternary nitric acid molten salt, and the addition amount is 0.4 wt%-5.0 wt%.The application prepares a two-dimensional intercalation composite structure corrosion inhibitor by organicizing the silicate and alkylating the GO, promotes the stability and dispersibility of the high-temperature quaternary nitric acid molten salt, slows down the corrosion of the high-temperature quaternary nitric acid molten salt on the metal matrix in a concentrated solar power and other high-temperature energy systems, and supports long-term stable operation of the high-temperature molten salt energy system.

The invention relates to the technical field of concentrating solar thermal power generation, and discloses a transient temperature rise suppression device and method for a tower type concentrating solar exposed tubular heat absorber. The transient temperature rise suppression device comprises a heat absorption tube, and the outer surface of the heat absorption tube is divided into a light receiving side and a backlight side; the temperature rise buffer assembly, the heat transfer coupling assembly, the heat insulation layer and the folding and unfolding structure are installed on the backlight side of the heat absorption pipe. The temperature rise buffer assembly comprises a packaging shell, a phase change heat storage medium packaged in the packaging shell and a heat conduction enhancing structure making contact with the phase change heat storage medium, and the heat transfer coupling assembly is arranged between the outer wall of the heat absorption pipe and the temperature rise buffer assembly. The temperature rise buffer assembly is arranged on the backlight side of the heat absorption pipe, the low-heat-resistance heat conduction channel is built in combination with the heat transfer coupling assembly, the phase change latent heat of the phase change heat storage medium is used for absorbing redundant heat generated when irradiation suddenly increases, peak clipping of the wall temperature of the heat absorption pipe and limiting of the temperature rise rate are achieved, and the damage risk of thermal stress impact to the heat absorption pipe and the connecting position is effectively reduced.

1. Name of the product in this design: Curved Concentrating Photovoltaic Bracket. 2. Purpose of this design: for power generation. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to the technical field of primary frequency modulation of photo-thermal power generation, and discloses a primary frequency modulation dynamic modeling method of a photo-thermal power generation system based on a heat flow method, which is used for grid-connected operation of a photo-thermal power station. A primary frequency modulation model structure of the photo-thermal generator set is decomposed into a plurality of local models, including a speed regulator model, a steam generation system model and a steam turbine model, and according to a heat flow method, a steam generation system dynamic model is established; comprising the steps that dynamic models of the heat exchange process of two fluids of a steam-water working medium and high-temperature fused salt in all the sections and dynamic models of the steam-water working medium and the high-temperature fused salt in the flowing process are built for the preheating section, the overheating section and the evaporation section of a steam generation system correspondingly. According to the method, the primary frequency modulation dynamic model of the photo-thermal power generation system is constructed, the technical blank is filled, the model complexity is considered while the primary frequency modulation characteristics of the photo-thermal power generation system are represented, the simulation rapidity and the model accuracy can be well balanced, and the method has high adaptability in a dynamic simulation analysis scene of a power system.

This invention relates to a high-absorption, high-temperature-resistant high-entropy niobate ceramic photothermal coating. The coating is composed of the following raw materials in parts by weight: 8-16 parts light-absorbing pigment, 2-4 parts filler, 20-40 parts binder, 22-65 parts ultrapure water, and 10-15 parts additives. The light-absorbing pigment is a high-entropy niobate ceramic A3NbO7, where A is any five elements selected from Pr, Mn, Co, La, Fe, Sm, Gd, and Yb, in equimolar ratios. The invention also discloses a method for preparing this high-entropy niobate ceramic photothermal coating. This invention exhibits excellent solar energy absorption performance, and the resulting coating possesses excellent adhesion, thermal shock resistance, and corrosion resistance, making it applicable to high-temperature concentrated solar power generation systems, photothermal de-icing, and seawater desalination.

This specification provides a method and apparatus for controlling power fluctuations in a concentrated solar power (CSP) generator set considering harmonic constraints. The method includes: analyzing the internal structure of the CSP system, calculating the dynamic equations of each subsystem in the CSP system on the d and q axes, and establishing a CSP generator set system model; calculating the harmonic distortion rate at the non-harmonic source nodes to determine the harmonic weights; determining the harmonic weights based on the CSP generator set system model and the harmonic distortion rate at the non-harmonic source nodes, and combining the generator characteristics to perform power fluctuation control of the CSP generator set using a proportional-integral control method.

The invention discloses a three-stage condensation frequency division driving SOEC water electrolysis hydrogen production system. The system comprises a solar full-spectrum three-stage condensation frequency division utilization subsystem and an SOEC water electrolysis hydrogen production subsystem. The solar full-spectrum three-stage condensation frequency-division utilization subsystem is used for carrying out condensation on multiple solar spectrums by different multiples; then the photovoltaic available spectrum is converted into electric energy, the residual spectrum generates heat energy at different temperatures through a radiation absorber, and the generated heat energy is used for heating raw material water for SOEC water electrolysis hydrogen production. And the SOEC water electrolysis hydrogen production subsystem is used for carrying out water electrolysis reaction to produce hydrogen. According to the energy requirement and the energy quality matching principle of the whole process, the energy source of the system is completely solar radiation, the solar quality is distinguished through multi-stage condensation frequency division, the solar quality is converted into electric energy and heat energy at different temperatures, and then the electrolyzed water reaction is driven.

Abstract This application relates to inventive concentrated solar power systems using solar receivers. The solar receiver comprises a fluid chamber configured for operating at pressures up to 2 atmospheres, and characterised by a solar absorber housed within the fluid chamber, and a plurality of transparent elongated panels that define a segmented wall of the fluid chamber, wherein concentrated solar radiation received through an opening passes through the segmented wall and into the fluid chamber and impinges upon the solar absorber. solar absorber.

The application discloses a kind of based on attention mechanism and reinforcement learning's ultra-short-term DNI prediction method, comprising: collecting solar thermal power station historical measured direct normal irradiance data and meteorological characteristic data;Periodic time characteristics and historical lag term are introduced to enhance time series dependence;Using bidirectional long short-term memory network extracts DNI time series features, constructs attention mechanism based on the dynamic change of cloud amount, and strengthens the response capability of model to weather mutation;Adopt KAN to replace traditional fully connected to high-dimensional nonlinear characteristics Adaptive function approximation;Introducing PPO reinforcement learning algorithm, dynamically optimizing model feature representation and parameters, realizing error self-feedback correction;Output DNI prediction result, for the dispatching and operation control of concentrating solar thermal power generation system.The method can effectively improve the DNI prediction accuracy and robustness under complex weather conditions, and provide high-precision prediction support for photo-thermal power generation and renewable energy grid connection.

A method of forming a concentrated solar power system for generating electricity. The method has three steps. The first step is coupling a plurality of tower segments together onsite at a solar energy concentration field to form a solar tower in a lowered orientation. At least one solar receiver is coupled to the solar tower to form a solar tower assembly. The second step is raising the solar tower assembly to a solar energy collection orientation by pivoting the solar tower assembly about a pivot axis located at a bottom portion of the solar tower. The third step is securing the solar tower assembly in the solar energy collection orientation.

This invention discloses a system and method for heat recovery, storage, and utilization in a concentrated solar power (CSP) project, belonging to the field of CSP energy storage technology. It includes a turbine main steam system, a reheat steam system, a high- and low-pressure bypass system, a high-pressure exhaust ventilation system, a condensate drain system, a heat exchanger, and a heat accumulator. The heat exchanger is connected to the high-pressure exhaust ventilation system, the high- and low-pressure bypass system, and the condensate drain system, respectively. The heat exchanger is also connected to a condenser or exhaust steam device. The heat accumulator is connected to the heat exchanger via heating pipes and return water pipes. The heat accumulator is connected to a heating system. This invention recovers and stores the heat discharged into the condenser or exhaust steam device through the high- and low-pressure bypass system, the condensate drain system, and the high-pressure exhaust ventilation system during frequent start-ups and shutdowns of the CSP unit. The heat stored in the heat accumulator can be directly used as a heating source for the CSP plant building or provided to other heat users, effectively reducing heat loss during frequent start-ups and shutdowns of the CSP unit.

Due to its ability to deliver direct-from-solar thermal energy without conversion, and the low-temperature nature of technology, Concentrating Solar Thermal (CST) technology is less complex, less expensive, and therefore most suitable among Solar Thermal Energy (STE) technologies for residential and small business heating, hot water, and other thermal energy applications. The presently disclosed technology is focused on systems and methods for successfully scaling CST technology, including novel and inventive construction techniques, arrangements, and materials. Scaling CST technology allows for it to be more affordable, easy to install, easy to maintain, and easy to operate, even in smaller-scale installations, such as at a residence or small business.

The invention relates to the field of photo-thermal power stations, in particular to a photo-thermal power station intelligent inspection device based on image recognition. According to the technical scheme, the photo-thermal power station intelligent inspection device based on image recognition comprises a multi-mode sensing module, an intelligent processing algorithm module, an unmanned aerial vehicle platform module, a data transmission and storage architecture module, a full-process execution and closed-loop management module and a fault emergency mechanism module. Full-automatic inspection is achieved through an unmanned aerial vehicle platform module and a full-process execution and closed-loop management module, an unmanned aerial vehicle carries a multi-mode sensing system, tasks are autonomously executed according to a preset route, manual climbing or close-range detection is replaced, and a task planning unit generates a spiral route based on a GIS map and covers all heat collecting tube arrays; the data acquisition and transmission unit returns detection data in real time, and the ground station automatically generates a work order and dispatches and rechecks the work order, so that the detection reliability is remarkably improved, high-temperature and high-altitude operation risks are avoided, and the personnel safety is guaranteed while the labor cost is reduced.

A concentrated solar power slew drive and a heliostat tracking system, comprising a horizontal slewing mechanism (100) and a pitching slewing mechanism (200). The horizontal slewing mechanism (100) comprises a first box body (110), a first worm gear (120), and a first worm (130). The first worm gear (120) and the first worm (130) are mounted within the first box body (110). The pitching slewing mechanism (200) comprises a second box body (210), a second worm gear (220), and a second worm (230), wherein the second box body (210) is fixedly connected to the first worm gear (120), and the second worm gear (220) and the second worm (230) are mounted within the second box body (210). When the first worm (130) drives the first worm gear (120) to rotate, the first worm gear (120) drives the pitching slewing mechanism (200) to rotate. The first worm (130) and the second worm (230) are both horizontally positioned, and when the horizontal slewing mechanism (100) and the pitching slewing mechanism (200) are in an initial state, the first worm (130) and the second worm (230) are perpendicular to one another. This helps to better facilitate on-site installation and debugging, and to easily and quickly distinguish the installation orientation. In addition, cable swing amplitude is smaller, which is beneficial to improving cable service life.