A method and system for photovoltaic-thermoelectric energy conversion effect simulation

Abstract

The application discloses a method and system for simulating photoelectric thermal energy conversion effect, and belongs to the technical field of photoelectric energy conversion. The method comprises the following steps: determining a local climate mode and basic data of a photovoltaic power station; based on the local climate mode and the basic data, and a photoelectric energy conversion relationship and an electric energy heat dissipation principle, establishing a local and remote energy conversion model of photoelectric thermal energy; and simulating the conversion effect of photoelectric thermal energy of the photovoltaic power station under the local climate mode through the energy conversion model. The energy conversion model can effectively simulate the conversion effect of photoelectric thermal energy of the photovoltaic power station, which is favorable for evaluating the local climate effect generated by large-scale photovoltaic bases in China, and has important significance for sustainable development of wind power in China.

Description

Technical Field

[0001] This invention relates to the field of photoelectric energy conversion technology, and more specifically, to a method and system for simulating photoelectric thermal energy conversion effects. Background Technology

[0002] The large-scale development of photovoltaic power plants will inevitably alter the surface environment and local climate conditions, such as surface roughness and albedo. Current research indicates that local temperature, precipitation, and wind speed have all changed after the construction of photovoltaic power plants.

[0003] However, whether large-scale photovoltaic (PV) bases in my country will significantly impact local climate remains uncertain, lacking reliable research and monitoring results. Current research and monitoring findings are largely based on actual meteorological observations of PV power plants, which are limited in quantity, short in duration, and of poor quality. Therefore, existing research and monitoring results are insufficient to support an assessment of the local climate effects of future large-scale PV bases in my country.

[0004] Numerical simulation of local climate is another approach to supporting the assessment of the local climate effects of photovoltaic power plants. Currently, some scholars have simulated the local climate effects of photovoltaic power plant sites on a scale of several decades based on local climate models (Liang Hong, Wei Ke, Ma Jiao. Possible climate effects of large-scale solar and wind power plant construction in Northwest my country [J]. Climate and Environmental Research, 2021, 26(02): 123-141; Yan Li, et al. Climate model shows large-scale wind and solar farms in the Sahara increase rain and vegetation. Science, 361(6406), 1019-1022.). Existing studies have mostly constructed local photovoltaic power plant models based on local climate models such as RegCM and WRF, and then incorporated several decades of background climate data for downscaling simulation. The core technology lies in imitating the effects of photovoltaic power plants absorbing solar energy and blocking wind speed by adding and modifying local surface roughness and surface albedo.

[0005] However, the above simulation method has certain problems: While it simulates the conversion of solar energy into electricity by reducing surface albedo, the converted electricity is entirely transformed into locally consumed heat energy, failing to simulate the process of electricity being transported to other locations for consumption and conversion into heat energy (this process increases the heat energy in those other locations). This problem will lead to an abnormal increase in local heat energy at the photovoltaic power station, which does not reflect reality and affects the assessment of the local climate effects of large-scale photovoltaic bases. Summary of the Invention

[0006] To address the above problems, this invention proposes a method for simulating photoelectric and thermal energy conversion effects, comprising:

[0007] Determine the local climate patterns and basic data for photovoltaic power plants;

[0008] Based on the local climate model and basic data, as well as the conversion relationship of photovoltaic energy and the principle of electrical energy heat dissipation, local and remote energy conversion models of photovoltaic energy are established.

[0009] Under the local climate model, the conversion effect of photovoltaic power plant's photoelectric and thermal energy is simulated using an energy conversion model.

[0010] Optionally, under the local climate model, the conversion effect of photovoltaic power plant's photoelectric and thermal energy is simulated using an energy conversion model, including:

[0011] Under the local climate model, the energy conversion model is used to simulate the wind speed attenuation effect caused by the increase in the roughness of the photovoltaic power station, and the conversion of the photovoltaic power station's solar energy into local thermal energy.

[0012] Under the local climate model, the conversion of solar energy into electrical energy from photovoltaic power plants is simulated after deducting the solar energy used for power generation.

[0013] Under the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy by the photovoltaic power station.

[0014] Optionally, before simulating the conversion effect of photovoltaic power plant's photoelectric and thermal energy using an energy conversion model under the local climate model, the following steps are included:

[0015] Under the local climate model, the spatial boundaries of photovoltaic power stations and the spatial boundaries of off-site photovoltaic power station consumption areas are delineated, and the surface roughness within the spatial grid is modified to the actual roughness of the photovoltaic power station.

[0016] Optionally, under a local climate model, after deducting the solar energy used for power generation by the photovoltaic power station, the simulation of the conversion of solar energy into electrical energy by the photovoltaic power station includes:

[0017] The conversion rate of solar energy into electrical energy in a photovoltaic power station can be calculated using the following formula;

[0018]

[0019] Among them, W e P(w) represents the conversion rate of solar energy into electrical energy in a photovoltaic power station, where N is the number of photovoltaic panels in the station, i = 1 to N. i ) represents the conversion rate between light energy and electrical energy, Δt represents the preset time period, and w i e represents the solar shortwave irradiance of a photovoltaic power station. PV The physical albedo of the photovoltaic panels in a photovoltaic power station, tPV The power conversion efficiency of photovoltaic panels in a photovoltaic power station;

[0020] The amount of light energy converted into electrical energy by the photovoltaic power station is deducted from the near-surface light energy of the photovoltaic power station to determine the total remaining near-surface light energy of the photovoltaic power station.

[0021] Based on the conversion of solar energy into electrical energy in a photovoltaic power station and the total remaining solar energy in the near-surface layer of the photovoltaic power station, the subtraction scale factor of the spatial boundary grid of the photovoltaic power station is determined. The light speed of the spatial boundary grid of the photovoltaic power station is adjusted according to the scale factor to simulate the conversion of solar energy into electrical energy in the photovoltaic power station.

[0022] The formula for calculating the proportionality coefficient is as follows:

[0023]

[0024] in, This is the proportionality coefficient;

[0025] M represents the number of spatial boundary grids for the photovoltaic power station, j = 1 to M, w j The shortwave irradiance of the sun on the surface of each grid.

[0026] Optionally, under the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy from the photovoltaic power station, including:

[0027] The thermal power added to each grid in the spatial boundary grid of the off-site photovoltaic power plant is used to simulate the conversion of electrical energy into thermal energy from the photovoltaic power plant. The calculation formula for the thermal power added to each grid in the spatial boundary grid is as follows:

[0028]

[0029] Where Δq is the thermal power added to each grid, N is the number of photovoltaic panels in the photovoltaic power station, i = 1 to N, w i e represents the solar shortwave irradiance of a photovoltaic power station. PV The physical albedo of the photovoltaic panels in a photovoltaic power station, t PV B represents the power conversion efficiency of the photovoltaic panels in the photovoltaic power station, and B represents the number of spatial boundary grids of the photovoltaic power station.

[0030] This invention also proposes a system for simulating photoelectric and thermal energy conversion effects, comprising:

[0031] Initial unit, used to determine the local climate pattern and basic data of photovoltaic power plants;

[0032] The model building unit is used to establish local and off-site energy conversion models of photovoltaic, photoelectric, and thermal energy based on the local climate model and basic data, as well as the conversion relationship of photovoltaic energy and the principle of electrical energy heat dissipation.

[0033] The conversion unit is used to simulate the conversion effect of photovoltaic and thermal energy of a photovoltaic power plant using an energy conversion model under the local climate model.

[0034] Optionally, under the local climate model, the conversion unit simulates the conversion effect of photovoltaic and thermal energy of a photovoltaic power plant using an energy conversion model, including:

[0035] Under the local climate model, the energy conversion model is used to simulate the wind speed attenuation effect caused by the increase in the roughness of the photovoltaic power station, and the conversion of the photovoltaic power station's solar energy into local thermal energy.

[0036] Under the local climate model, the conversion of solar energy into electrical energy from photovoltaic power plants is simulated after deducting the solar energy used for power generation.

[0037] Under the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy by the photovoltaic power station.

[0038] Optionally, before simulating the conversion effect of photovoltaic power plant's photoelectric and thermal energy using an energy conversion model under the local climate model, the conversion unit is also used for:

[0039] Under the local climate model, the spatial boundaries of photovoltaic power stations and the spatial boundaries of off-site photovoltaic power station consumption areas are delineated, and the surface roughness within the spatial grid is modified to the actual roughness of the photovoltaic power station.

[0040] Optionally, under a local climate model, after deducting the solar energy used for power generation by the photovoltaic power station, the simulation of the conversion of solar energy into electrical energy by the photovoltaic power station includes:

[0041] The conversion rate of solar energy into electrical energy in a photovoltaic power station can be calculated using the following formula;

[0042]

[0043] Among them, W e P(w) represents the conversion rate of solar energy into electrical energy in a photovoltaic power station, where N is the number of photovoltaic panels in the station, i = 1 to N. i ) represents the conversion rate between light energy and electrical energy, Δt represents the preset time period, and w i e represents the solar shortwave irradiance of a photovoltaic power station. PV The physical albedo of the photovoltaic panels in a photovoltaic power station, t PV The power conversion efficiency of photovoltaic panels in a photovoltaic power station;

[0044] The amount of light energy converted into electrical energy by the photovoltaic power station is deducted from the near-surface light energy of the photovoltaic power station to determine the total remaining near-surface light energy of the photovoltaic power station.

[0045] Based on the conversion of solar energy into electrical energy in a photovoltaic power station and the total remaining solar energy in the near-surface layer of the photovoltaic power station, the subtraction scale factor of the spatial boundary grid of the photovoltaic power station is determined. The light speed of the spatial boundary grid of the photovoltaic power station is adjusted according to the scale factor to simulate the conversion of solar energy into electrical energy in the photovoltaic power station.

[0046] The formula for calculating the proportionality coefficient is as follows:

[0047]

[0048] in, This is the proportionality coefficient;

[0049] M represents the number of spatial boundary grids for the photovoltaic power station, j = 1 to M, w j The shortwave irradiance of the sun on the surface of each grid.

[0050] Optionally, under the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy from the photovoltaic power station, including:

[0051] The thermal power added to each grid in the spatial boundary grid of the off-site photovoltaic power plant is used to simulate the conversion of electrical energy into thermal energy from the photovoltaic power plant. The calculation formula for the thermal power added to each grid in the spatial boundary grid is as follows:

[0052]

[0053] Where Δq is the thermal power added to each grid, N is the number of photovoltaic panels in the photovoltaic power station, i = 1 to N, w i e represents the solar shortwave irradiance of a photovoltaic power station. PV The physical albedo of the photovoltaic panels in a photovoltaic power station, t PV B represents the power conversion efficiency of the photovoltaic panels in the photovoltaic power station, and B represents the number of spatial boundary grids of the photovoltaic power station.

[0054] In another aspect, the present invention also provides a computing device, comprising: one or more processors;

[0055] A processor is used to execute one or more programs;

[0056] When the one or more programs are executed by the one or more processors, the method described above is implemented.

[0057] In another aspect, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed, implements the method described above.

[0058] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0059] This invention provides a method for simulating the photovoltaic-thermal energy conversion effect. The method includes: determining the local climate model and basic data of a photovoltaic power station; establishing local and remote energy conversion models based on the local climate model and basic data, the photovoltaic-thermal energy conversion relationship, and the principle of electrical energy heat dissipation; and simulating the photovoltaic-thermal energy conversion effect of the photovoltaic power station using the energy conversion model under the local climate model. This invention can effectively simulate the photovoltaic-thermal energy conversion effect of a photovoltaic power station through the energy conversion model, which is beneficial for assessing the local climate effects generated by large-scale photovoltaic bases in my country and is of great significance for the sustainable development of wind power in my country. Attached Figure Description

[0060] Figure 1 This is a flowchart of the method of the present invention;

[0061] Figure 2 This is a structural diagram of the system of the present invention. Detailed Implementation

[0062] Exemplary embodiments of the invention will now be described with reference to the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to fully and completely disclose the invention and to fully convey its scope to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the drawings is not intended to limit the invention. In the drawings, the same units / elements are referred to by the same reference numerals.

[0063] Unless otherwise stated, the terms used herein (including technical terms) have their common meaning as understood by one of ordinary skill in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have a meaning consistent with the context of their relevant field, and not to be interpreted as having an idealized or overly formal meaning.

[0064] Example 1:

[0065] This invention proposes a method for simulating photoelectric and thermal energy conversion effects, such as... Figure 1 As shown, it includes:

[0066] Step 1: Determine the local climate model and basic data for the photovoltaic power station;

[0067] Step 2: Based on the local climate model and basic data, as well as the conversion relationship of photovoltaic energy and the principle of electrical energy heat dissipation, establish local and off-site energy conversion models of photovoltaic energy.

[0068] Step 3: Under the local climate model, the conversion effect of photovoltaic power plant's photoelectric and thermal energy is simulated using an energy conversion model.

[0069] In the local climate model, the energy conversion effect of photovoltaic power plant photovoltaic and thermal energy is simulated using an energy conversion model, including:

[0070] Under the local climate model, the energy conversion model is used to simulate the wind speed attenuation effect caused by the increase in the roughness of the photovoltaic power station, and the conversion of the photovoltaic power station's solar energy into local thermal energy.

[0071] Under the local climate model, the conversion of solar energy into electrical energy from photovoltaic power plants is simulated after deducting the solar energy used for power generation.

[0072] Under the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy by the photovoltaic power station.

[0073] In the local climate model, an energy conversion model is used to simulate the wind speed attenuation effect caused by the increase in the roughness of the photovoltaic power station, and the conversion of the photovoltaic power station's solar energy into local thermal energy, including:

[0074] In the local climate model, the spatial boundary of the target photovoltaic power station is defined, and the total number of photovoltaic panels is set as N;

[0075] By modifying the surface roughness within the spatial boundary grid to the actual roughness Z0 of the photovoltaic power station, the local climate model can simulate the wind speed attenuation effect caused by the increase in surface roughness, as well as the effect of wind energy dissipation into local heat energy.

[0076] Modify the surface albedo within the spatial boundary grid to the physical albedo of the photovoltaic panel. PV This allows local climate models to simulate the portion of solar energy absorbed by photovoltaic panels that is not converted into electricity, i.e., the effect of solar energy being converted into local heat energy. Let w be the solar energy (i.e., the surface solar shortwave irradiance) of each grid within the boundary of the photovoltaic power station. i The local thermal energy W generated by the N photovoltaic panels of the photovoltaic power station in time Δt is... PV ,as follows:

[0077]

[0078] Among them, before simulating the conversion effect of photovoltaic power plant photovoltaic and thermal energy through an energy conversion model under the local climate model, the following are included:

[0079] Under the local climate model, the spatial boundaries of photovoltaic power stations and the spatial boundaries of off-site photovoltaic power station consumption areas are delineated, and the surface roughness within the spatial grid is modified to the actual roughness of the photovoltaic power station.

[0080] In the local climate model, after deducting the solar energy used for power generation by the photovoltaic power station, the simulation of the conversion of solar energy into electrical energy by the photovoltaic power station includes:

[0081] The conversion rate of solar energy into electrical energy in a photovoltaic power station can be calculated using the following formula;

[0082]

[0083] Among them, W e P(w) represents the conversion rate of solar energy into electrical energy in a photovoltaic power station, where N is the number of photovoltaic panels in the station, i = 1 to N. i ) represents the conversion rate between light energy and electrical energy, Δt represents the preset time period, and w i e represents the solar shortwave irradiance of a photovoltaic power station. PV The physical albedo of the photovoltaic panels in a photovoltaic power station, t PV The power conversion efficiency of photovoltaic panels in a photovoltaic power station;

[0084] W e The determination process is as follows:

[0085] Estimate the solar-to-electricity conversion of a photovoltaic power station: The shortwave solar irradiance of the i-th photovoltaic panel (i = 1, 2, 3, ..., N) on the Earth's surface is w. i Under these circumstances, the conversion power p(w) between solar energy and electrical energy i The formula is as follows:

[0086] P(w i ) = w i (1-e PV )t PV

[0087] Based on the above formula, the total solar power conversion efficiency of N photovoltaic panels in the photovoltaic power station is determined to be: W is determined based on conversion rate. e .

[0088] The amount of light energy converted into electrical energy by the photovoltaic power station is deducted from the near-surface light energy of the photovoltaic power station to determine the total remaining near-surface light energy of the photovoltaic power station.

[0089] Based on the conversion of solar energy into electrical energy in a photovoltaic power station and the total remaining solar energy in the near-surface layer of the photovoltaic power station, the subtraction scale factor of the spatial boundary grid of the photovoltaic power station is determined. The light speed of the spatial boundary grid of the photovoltaic power station is adjusted according to the scale factor to simulate the conversion of solar energy into electrical energy in the photovoltaic power station.

[0090] The formula for calculating the proportionality coefficient is as follows:

[0091]

[0092] in, This is the proportionality coefficient;

[0093] M represents the number of spatial boundary grids for the photovoltaic power station, j = 1 to M, w j The shortwave irradiance of the sun on the surface of each grid;

[0094] The process for determining the proportionality coefficient is as follows:

[0095] Subtract the solar-to-electrical conversion from the surface solar energy of the photovoltaic power station: Let the number of simulated grids on the surface of the photovoltaic power station be M, and the surface solar shortwave irradiance of each grid be w. j (j=1,2,3,…,M), then the total solar energy W of the near-surface layer of the photovoltaic power station at time Δt. T The calculation formula is as follows:

[0096]

[0097] Subtracting the converted electrical energy W e Then the remaining total solar energy ΔW of the photovoltaic power station is:

[0098] ΔW=W T -W e

[0099] Assume that the same proportion of surface solar irradiance is subtracted from each simulation grid, and the surface solar irradiance after subtraction for each grid becomes w. j / k, the total solar energy ΔW of the photovoltaic power station after deduction is:

[0100]

[0101] From the above two equations, the following can be determined:

[0102]

[0103] Therefore, the following can be determined:

[0104]

[0105] Solving the above system of equations yields the grid subtraction scaling factor. In the energy balance module of a local climate model (such as the SUBROUTINE ENERGY module in the Phys / module_sf_noahmplsm.F scheme of WRF), the surface solar irradiance w at the simulated grid points of the photovoltaic power plant is then calculated. j Adjusted to w j / k means that solar energy has been converted into electrical energy.

[0106] In the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy from the photovoltaic power station, including:

[0107] The thermal power added to each grid in the spatial boundary grid of the off-site photovoltaic power plant is used to simulate the conversion of electrical energy into thermal energy from the photovoltaic power plant. The calculation formula for the thermal power added to each grid in the spatial boundary grid is as follows:

[0108]

[0109] Where Δq is the thermal power added to each grid, N is the number of photovoltaic panels in the photovoltaic power station, i = 1 to N, w i e represents the solar shortwave irradiance of a photovoltaic power station. PV The physical albedo of the photovoltaic panels in a photovoltaic power station, t PV B represents the power conversion efficiency of the photovoltaic panels in the photovoltaic power station, and B represents the number of spatial boundary grids of the photovoltaic power station.

[0110] The process for determining Δq is as follows:

[0111] In a local climate model, a spatial boundary is delineated for off-site energy consumption. Let B be the total number of grids along this boundary, and let W be the electrical energy generated by the photovoltaic power station. e It is consumed within the boundary of this space and becomes heat energy.

[0112] Characterizing the consumed thermal energy: Assume that each simulated grid consumes ΔqΔt of thermal energy (Δq is the thermal power) within a time interval Δt. Then, the total thermal energy consumed by all grids is ΔqΔtB. This portion of thermal energy must be combined with the electrical energy W generated by the photovoltaic field. e Equal, that is:

[0113] ΔqΔtB=W e

[0114] Therefore, the following can be determined:

[0115]

[0116] Solving the above equation, we can obtain the increase in thermal power Δq for each grid within the absorption area;

[0117]

[0118] Adding Δq of thermal power to the grid for off-site energy consumption: In the energy balance module of the local climate model (such as the SUBROUTINE ENERGY module in the Phys / module_sf_noahmplsm.F scheme of WRF), the thermal power at the grid points in the photovoltaic consumption area is increased by Δq, which realizes the conversion of electrical energy into thermal energy.

[0119] Example 2:

[0120] This invention also proposes a system 200 for simulating photoelectric and thermal energy conversion effects, such as... Figure 2 As shown, it includes:

[0121] Initial unit 201 is used to determine the local climate model and basic data of the photovoltaic power station;

[0122] Model building unit 202 is used to establish local and off-site energy conversion models of photoelectric and thermal energy based on the local climate model and basic data, as well as the conversion relationship of photoelectric and solar energy and the principle of electrical energy heat dissipation.

[0123] The conversion unit 203 is used to simulate the conversion effect of photovoltaic and thermal energy of a photovoltaic power station through an energy conversion model under the local climate mode.

[0124] The conversion unit, under the local climate model, simulates the conversion effect of photovoltaic and thermal energy in a photovoltaic power plant using an energy conversion model, including:

[0125] Under the local climate model, the energy conversion model is used to simulate the wind speed attenuation effect caused by the increase in the roughness of the photovoltaic power station, and the conversion of the photovoltaic power station's solar energy into local thermal energy.

[0126] Under the local climate model, the conversion of solar energy into electrical energy from photovoltaic power plants is simulated after deducting the solar energy used for power generation.

[0127] Under the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy by the photovoltaic power station.

[0128] In the aforementioned local climate model, before simulating the conversion effect of photovoltaic power plant's photoelectric and thermal energy through an energy conversion model, the conversion unit is also used for:

[0129] Under the local climate model, the spatial boundaries of photovoltaic power stations and the spatial boundaries of off-site photovoltaic power station consumption areas are delineated, and the surface roughness within the spatial grid is modified to the actual roughness of the photovoltaic power station.

[0130] In the local climate model, after deducting the solar energy used for power generation by the photovoltaic power station, the simulation of the conversion of solar energy into electrical energy by the photovoltaic power station includes:

[0131] The conversion rate of solar energy into electrical energy in a photovoltaic power station can be calculated using the following formula;

[0132]

[0133] Among them, W e P(w) represents the conversion rate of solar energy into electrical energy in a photovoltaic power station, where N is the number of photovoltaic panels in the station, i = 1 to N. i ) represents the conversion rate between light energy and electrical energy, Δt represents the preset time period, and w i e represents the solar shortwave irradiance of a photovoltaic power station. PVThe physical albedo of the photovoltaic panels in a photovoltaic power station, t PV The power conversion efficiency of photovoltaic panels in a photovoltaic power station;

[0134] The amount of light energy converted into electrical energy by the photovoltaic power station is deducted from the near-surface light energy of the photovoltaic power station to determine the total remaining near-surface light energy of the photovoltaic power station.

[0135] Based on the conversion of solar energy into electrical energy in a photovoltaic power station and the total remaining solar energy in the near-surface layer of the photovoltaic power station, the subtraction scale factor of the spatial boundary grid of the photovoltaic power station is determined. The light speed of the spatial boundary grid of the photovoltaic power station is adjusted according to the scale factor to simulate the conversion of solar energy into electrical energy in the photovoltaic power station.

[0136] The formula for calculating the proportionality coefficient is as follows:

[0137]

[0138] in, This is the proportionality coefficient;

[0139] M represents the number of spatial boundary grids for the photovoltaic power station, j = 1 to M, w j The shortwave irradiance of the sun on the surface of each grid.

[0140] In the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy from the photovoltaic power station, including:

[0141] The thermal power added to each grid in the spatial boundary grid of the off-site photovoltaic power plant is used to simulate the conversion of electrical energy into thermal energy from the photovoltaic power plant. The calculation formula for the thermal power added to each grid in the spatial boundary grid is as follows:

[0142]

[0143] Where Δq is the thermal power added to each grid, N is the number of photovoltaic panels in the photovoltaic power station, i = 1 to N, w i e represents the solar shortwave irradiance of a photovoltaic power station. PV The physical albedo of the photovoltaic panels in a photovoltaic power station, t PV B represents the power conversion efficiency of the photovoltaic panels in the photovoltaic power station, and B represents the number of spatial boundary grids of the photovoltaic power station.

[0144] This invention can effectively simulate the conversion effect of photovoltaic and thermal energy in photovoltaic power plants through an energy conversion model, which is helpful for assessing the local climate effects generated by large-scale photovoltaic bases in my country and is of great significance for the sustainable development of wind power in my country.

[0145] Example 3:

[0146] Based on the same inventive concept, this invention also provides a computer device, which includes a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in the computer storage medium to implement corresponding method flows or corresponding functions, thereby implementing the steps of the methods in the above embodiments.

[0147] Example 4:

[0148] Based on the same inventive concept, this invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of the method in the above embodiments.

[0149] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of the present invention can be implemented using various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.

[0150] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0151] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0152] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0153] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0154] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for simulating photoelectric and thermal energy conversion effects, characterized in that, The method includes: Determine the local climate patterns and basic data for photovoltaic power plants; Based on the aforementioned local climate model and basic data, as well as the conversion relationship of photovoltaic energy and the principle of electrical energy heat dissipation, local and remote energy conversion models of photovoltaic thermal energy are established. Under the local climate model, the conversion effect of photovoltaic and thermal energy of a photovoltaic power plant is simulated using an energy conversion model; The simulation of the photovoltaic and thermal energy conversion effects of a photovoltaic power plant using an energy conversion model under the local climate model includes: Under the local climate model, the energy conversion model is used to simulate the wind speed attenuation effect caused by the increase in the roughness of the photovoltaic power station, and the conversion of the photovoltaic power station's solar energy into local thermal energy. Under the local climate model, the conversion of solar energy into electrical energy from photovoltaic power plants is simulated after deducting the solar energy used for power generation. Under the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy by the photovoltaic power station; The simulation of the conversion of solar energy into electrical energy from photovoltaic power plants, after deducting the solar energy used for power generation by the photovoltaic power plant under the local climate model, includes: The conversion rate of solar energy into electrical energy in a photovoltaic power station can be calculated using the following formula; in, This refers to the conversion rate of solar energy into electrical energy in a photovoltaic power station. The number of photovoltaic panels in a photovoltaic power station. , The conversion rate between light energy and electrical energy. For a preset time period, The solar shortwave irradiance of the photovoltaic power station. The physical albedo of the photovoltaic panels in a photovoltaic power station. The power conversion efficiency of photovoltaic panels in a photovoltaic power station; The amount of light energy converted into electrical energy by the photovoltaic power station is deducted from the near-surface light energy of the photovoltaic power station to determine the total remaining near-surface light energy of the photovoltaic power station. Based on the conversion rate of solar energy to electrical energy from a photovoltaic (PV) power station and the total residual solar energy near the ground level, a deduction ratio for the spatial boundary grid of the PV power station is determined. The surface solar irradiance of each grid within the spatial boundary grid is then adjusted according to this ratio. This simulates the conversion of solar energy into electrical energy in a photovoltaic power station. The formula for calculating the proportionality coefficient is as follows: in, This is the proportionality coefficient; The number of spatial boundary grids for photovoltaic power plants. , The shortwave irradiance of the sun on the surface of each grid.

2. The method according to claim 1, characterized in that, Before simulating the conversion effect of photovoltaic power plant's photoelectric and thermal energy using an energy conversion model under the local climate model, the following steps are included: Under the local climate model, the spatial boundaries of photovoltaic power stations and the spatial boundaries of off-site photovoltaic power station consumption areas are delineated, and the surface roughness within the spatial grid is modified to the actual roughness of the photovoltaic power station.

3. The method according to claim 1, characterized in that, The aforementioned method, under a local climate model, increases the heat power consumed by the photovoltaic power station in a different location to simulate the conversion of electrical energy into heat energy from the photovoltaic power station, including: The thermal power added to each grid in the spatial boundary grid of the off-site photovoltaic power plant is used to simulate the conversion of electrical energy into thermal energy from the photovoltaic power plant. The calculation formula for the thermal power added to each grid in the spatial boundary grid is as follows: in, The added thermal power for each grid The number of photovoltaic panels in a photovoltaic power station. , The solar shortwave irradiance of the photovoltaic power station. The physical albedo of the photovoltaic panels in a photovoltaic power station. The power conversion efficiency of photovoltaic panels in a photovoltaic power station. M This represents the number of spatial boundary grids for a photovoltaic power station.

4. A system for simulating photoelectric and thermal energy conversion effects, characterized in that, The system includes: The initial unit is used to determine the local climate patterns and basic data for photovoltaic power plants; The model building unit is used to establish local and off-site energy conversion models of photoelectric and thermal energy based on the local climate model and basic data, as well as the conversion relationship of photoelectric energy and the principle of electrical energy heat dissipation. The conversion unit is used to simulate the conversion effect of photovoltaic and thermal energy of a photovoltaic power plant using an energy conversion model under the local climate model. The conversion unit, under the local climate model, simulates the conversion effect of photovoltaic and thermal energy in a photovoltaic power plant using an energy conversion model, including: Under the local climate model, the energy conversion model is used to simulate the wind speed attenuation effect caused by the increase in the roughness of the photovoltaic power station, and the conversion of the photovoltaic power station's solar energy into local thermal energy. Under the local climate model, the conversion of solar energy into electrical energy from photovoltaic power plants is simulated after deducting the solar energy used for power generation. Under the local climate model, the heat power consumed by the photovoltaic power station in a different location is increased to simulate the conversion of electrical energy into heat energy by the photovoltaic power station; The simulation of the conversion of solar energy into electrical energy from photovoltaic power plants, after deducting the solar energy used for power generation by the photovoltaic power plant under the local climate model, includes: The conversion rate of solar energy into electrical energy in a photovoltaic power station can be calculated using the following formula; in, This refers to the conversion rate of solar energy into electrical energy in a photovoltaic power station. The number of photovoltaic panels in a photovoltaic power station. , The conversion rate between light energy and electrical energy. For a preset time period, The solar shortwave irradiance of the photovoltaic power station. The physical albedo of the photovoltaic panels in a photovoltaic power station. The power conversion efficiency of photovoltaic panels in a photovoltaic power station; The amount of light energy converted into electrical energy by the photovoltaic power station is deducted from the near-surface light energy of the photovoltaic power station to determine the total remaining near-surface light energy of the photovoltaic power station. Based on the conversion rate of solar energy to electrical energy from a photovoltaic (PV) power station and the total residual solar energy near the ground level, a deduction ratio for the spatial boundary grid of the PV power station is determined. The surface solar irradiance of each grid within the spatial boundary grid is then adjusted according to this ratio. This simulates the conversion of solar energy into electrical energy in a photovoltaic power station. The formula for calculating the proportionality coefficient is as follows: in, This is the proportionality coefficient; The number of spatial boundary grids for photovoltaic power plants. , The shortwave irradiance of the sun on the surface of each grid.

5. The system according to claim 4, characterized in that, Before simulating the conversion effect of photovoltaic power plant's photoelectric and thermal energy using an energy conversion model under the local climate model, the conversion unit is also used for: Under the local climate model, the spatial boundaries of photovoltaic power stations and the spatial boundaries of off-site photovoltaic power station consumption areas are delineated, and the surface roughness within the spatial grid is modified to the actual roughness of the photovoltaic power station.

6. The system according to claim 4, characterized in that, The aforementioned method, under a local climate model, increases the heat power consumed by the photovoltaic power station in a different location to simulate the conversion of electrical energy into heat energy from the photovoltaic power station, including: The thermal power added to each grid in the spatial boundary grid of the off-site photovoltaic power plant is used to simulate the conversion of electrical energy into thermal energy from the photovoltaic power plant. The calculation formula for the thermal power added to each grid in the spatial boundary grid is as follows: in, The added thermal power for each grid The number of photovoltaic panels in a photovoltaic power station. , The solar shortwave irradiance of the photovoltaic power station. The physical albedo of the photovoltaic panels in a photovoltaic power station. The power conversion efficiency of photovoltaic panels in a photovoltaic power station. M This represents the number of spatial boundary grids for a photovoltaic power station.

7. A computer device, characterized in that, include: One or more processors; A processor is used to execute one or more programs; When the one or more programs are executed by the one or more processors, the method described in any one of claims 1-3 is implemented.

8. A computer-readable storage medium, characterized in that, It contains a computer program, which, when executed, implements the method as described in any one of claims 1-3.

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