Method and device for evaluating influence of water surface photovoltaic power station on water radiation and ecology

Abstract

The invention provides a method and device for evaluating water radiation and ecological influence of a water surface photovoltaic power station, and relates to the technical field of new energy and water environment protection. The method comprises the following steps: performing photovoltaic reflection radiation calculation according to radiation data, sun position parameters and geometric parameters of a photovoltaic system to obtain water surface net spectral irradiance; calculating photosynthetically active radiation distribution of the water body according to the net spectral irradiance of the water surface, and calculating a stable layer structure of the water body according to the photosynthetically active radiation distribution and the meteorological data to obtain a temperature gradient and a mixed layer depth; determining ecological response model parameters according to the temperature gradient, the mixed layer depth and the water body ecological system parameters; and substituting the ecological response model parameters into the ecological response model, and determining a photovoltaic ecological influence index according to a model solving result and a preset reference value. The device executes the method. According to the method and the device provided by the embodiment of the invention, the influence of the water surface photovoltaic power station on water radiation and ecology can be accurately evaluated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy and water environment protection, and particularly relates to a method and device for evaluating the radiation and ecological influence of a water surface photovoltaic power station on water bodies. BACKGROUND

[0002] With the continuous maturity of new energy technology, photovoltaic power stations are widely used. Based on the goal of improving photovoltaic power generation efficiency, photovoltaic power stations are usually built in places with sufficient light, which usually include the vicinity of rivers, lakes and the like. The radiation generated by the photovoltaic power station will cause adverse effects on the water body ecosystem.

[0003] The prior art mainly focuses on power generation efficiency and equipment stability, and there is currently no technology that focuses on the influence of the radiation generated by the photovoltaic power station on the water body ecosystem. SUMMARY

[0004] In view of the problems in the prior art, the embodiments of the present application provide a method and device for evaluating the radiation and ecological influence of a water surface photovoltaic power station on water bodies, which can at least partially solve the problems in the prior art.

[0005] In one aspect, the present application provides a method for evaluating the radiation and ecological influence of a water surface photovoltaic power station on water bodies, comprising:

[0006] obtaining radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters and water body ecosystem parameters;

[0007] performing photovoltaic reflected radiation calculation according to the radiation data, the solar position parameters and the photovoltaic system geometric parameters to obtain water surface net spectral irradiance;

[0008] calculating the photosynthetically active radiation distribution of the water body according to the water surface net spectral irradiance, and performing water body stable layer structure calculation according to the photosynthetically active radiation distribution and the meteorological data to obtain a temperature gradient and a mixed layer depth;

[0009] determining ecological response model parameters according to the temperature gradient, the mixed layer depth and the water body ecosystem parameters;

[0010] substituting the ecological response model parameters into an ecological response model, determining a photovoltaic ecological influence index according to the model solution result and a preset reference value, and evaluating the radiation and ecological influence of the water surface photovoltaic power station on water bodies according to the photovoltaic ecological influence index.

[0011] The photovoltaic reflected radiation calculation according to the radiation data, the solar position parameters and the photovoltaic system geometric parameters to obtain the water surface net spectral irradiance comprises:

[0012] calculating a light incidence angle according to the solar position parameter and the photovoltaic system geometry parameter;

[0013] calculating a spectral reflectance according to the light incidence angle, wavelength, pollution factor and aging factor;

[0014] determining a light reflection direction according to the reflection type, and calculating an additional irradiance generated by photovoltaic array reflection according to the light reflection direction, the radiation data, the spectral reflectance and a shielding factor;

[0015] calculating a water surface net spectral irradiance according to the radiation data and the additional irradiance.

[0016] wherein the calculating the photosynthetically active radiation distribution of the water body according to the water surface net spectral irradiance comprises:

[0017] calculating a vertical light field distribution of each wavelength according to the water surface net spectral irradiance;

[0018] calculating the photosynthetically active radiation distribution of the water body according to the vertical light field distribution of each wavelength.

[0019] wherein the calculating the temperature gradient and the mixed layer depth according to the photosynthetically active radiation distribution and the meteorological data comprises:

[0020] calculating a volume heat source term according to the photosynthetically active radiation distribution;

[0021] determining water body heat balance calculation parameters according to the volume heat source term and the meteorological data, substituting the water body heat balance calculation parameters into a water body heat balance equation, and determining the temperature gradient and the mixed layer depth according to the equation solving result.

[0022] wherein the determining the photovoltaic ecological influence index according to the model solving result and the preset reference value comprises:

[0023] determining a photosynthetically active radiation change amount normalized value, a water temperature change amount normalized value and a dissolved oxygen change amount normalized value according to the model solving result and the preset reference value;

[0024] calculating the photovoltaic ecological influence index according to the photosynthetically active radiation change amount normalized value, the water temperature change amount normalized value, the dissolved oxygen change amount normalized value and their corresponding weights.

[0025] wherein after the step of evaluating the radiation and ecological influence of the water surface photovoltaic power station on the water body according to the photovoltaic ecological influence index, the method for evaluating the radiation and ecological influence of the water surface photovoltaic power station on the water body further comprises:

[0026] The constraints, photovoltaic ecological impact index, and independent variables of the photovoltaic power generation loss estimation model are determined based on the geometric parameters of the photovoltaic system.

[0027] The optimal values ​​of the geometric parameters of the photovoltaic system are obtained by solving the objective function constructed based on the photovoltaic ecological impact index and the photovoltaic power generation loss estimation model, with the objective function being the minimum value.

[0028] On the one hand, this invention proposes a device for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies, comprising:

[0029] The acquisition unit is used to acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters;

[0030] The first calculation unit is used to perform photovoltaic reflected radiation calculation based on the radiation data, the solar position parameters and the photovoltaic system geometric parameters to obtain the net spectral irradiance of the water surface.

[0031] The second calculation unit is used to calculate the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface, and to calculate the water body's stable layer structure based on the photosynthetically active radiation distribution and the meteorological data, thereby obtaining the temperature gradient and the depth of the mixing layer.

[0032] The determining unit is used to determine the ecological response model parameters based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters.

[0033] The assessment unit is used to input the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and assess the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0034] In another aspect, embodiments of the present invention provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the following method:

[0035] Acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters;

[0036] The net spectral irradiance of the water surface is obtained by calculating the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system.

[0037] The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance of the water surface, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer.

[0038] The parameters of the ecological response model are determined based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters.

[0039] Substitute the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and conduct an assessment of the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0040] This invention provides a computer-readable storage medium, comprising:

[0041] The computer-readable storage medium stores a computer program that, when executed by a processor, implements the following method:

[0042] Acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters;

[0043] The net spectral irradiance of the water surface is obtained by calculating the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system.

[0044] The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance of the water surface, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer.

[0045] The parameters of the ecological response model are determined based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters.

[0046] Substitute the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and conduct an assessment of the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0047] This invention also provides a computer program product, which includes a computer program that, when executed by a processor, implements the following method:

[0048] Acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters;

[0049] The net spectral irradiance of the water surface is obtained by calculating the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system.

[0050] The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance of the water surface, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer.

[0051] The parameters of the ecological response model are determined based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters.

[0052] Substitute the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and conduct an assessment of the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0053] The method and apparatus provided in this invention for assessing the radiation and ecological impacts of surface photovoltaic (PV) power stations on water bodies include: acquiring radiation data, meteorological data, solar position parameters, PV system geometric parameters, and aquatic ecosystem parameters; calculating PV reflected radiation based on the radiation data, solar position parameters, and PV system geometric parameters to obtain the net spectral irradiance of the water surface; calculating the photosynthetically active radiation distribution of the water body based on the net spectral irradiance; calculating the water body's stable layer structure based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and mixing layer depth; determining ecological response model parameters based on the temperature gradient, mixing layer depth, and aquatic ecosystem parameters; substituting the ecological response model parameters into the ecological response model; determining the PV ecological impact index based on the model solution results and preset benchmark values; and assessing the radiation and ecological impacts of surface PV power stations on water bodies based on the PV ecological impact index. This method can accurately assess the radiation and ecological impacts of surface PV power stations on water bodies, thereby contributing to the improvement of water environment protection levels. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0055] Figure 1 This is a flowchart illustrating a method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies, provided by an embodiment of the present invention.

[0056] Figure 2 This is a schematic diagram of the geometric arrangement of photovoltaic modules and incident and reflected radiation provided in an embodiment of the present invention.

[0057] Figure 3 This is a schematic diagram of the structure and variable relationships of the ecological response model provided in the embodiments of the present invention.

[0058] Figure 4 This is a schematic diagram of the structure of a device for evaluating the radiation and ecological impact of a surface photovoltaic power station on water bodies, provided in an embodiment of the present invention.

[0059] Figure 5 This is a schematic diagram of the physical structure of a computer device provided in an embodiment of the present invention. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0061] Figure 1 This is a flowchart illustrating a method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies, as provided in an embodiment of the present invention. Figure 1 As shown in the embodiments of the present invention, the method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies includes:

[0062] Step S1: Acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters.

[0063] Step S2: Calculate the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the photovoltaic system geometric parameters to obtain the net spectral irradiance of the water surface.

[0064] Step S3: Calculate the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface, and calculate the water body's stable layer structure based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer.

[0065] Step S4: Determine the ecological response model parameters based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters.

[0066] Step S5: Substitute the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and conduct an assessment of the radiation and ecological impact of the surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0067] In step S1 above, the device acquires radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters. The device can be a computer device that performs this method. The acquisition, storage, use, and processing of data in this application comply with relevant regulations. Radiation data may include direct radiation, diffuse radiation, and incident radiation intensity. This data will be used directly to calculate the power generation and reflected radiation of the photovoltaic modules.

[0068] Meteorological data can include air temperature, relative humidity, wind speed, air pressure, and precipitation. These data are important inputs for calculating sensible heat, latent heat exchange, and water mixing depth in the water body heat balance equation.

[0069] Solar position parameters can include zenith angle. and solar azimuth .

[0070] The geometric parameters of a photovoltaic system can include the tilt angle of the photovoltaic modules. Azimuth angle of photovoltaic modules Photovoltaic module length ,width and height Array spacing and .

[0071] Aquatic ecosystem parameters may include the following:

[0072] Photosynthetic growth factor ,in, The photothermal-limited specific growth rate is affected by intralayer temperature. With available light control, Primary producers (algae).

[0073] Loss factors from consumption by consumers (zooplankton) ,in, For consumers.

[0074] Natural algal death / decay factors (including disease-induced death and aging) .

[0075] Vertical transport items ,in, The settling velocity (positive downwards) forms a flux with the vertical gradient.

[0076] Consumption of nutrients as synthesized by algae , where Y is the stoichiometric ratio.

[0077] It releases nutrients for the remineralization of debris.

[0078] For other recycling sources.

[0079] It is a growth factor that converts ingested algae into consumer biomass. For assimilation efficiency.

[0080] These are factors contributing to biomass loss due to natural death and respiration.

[0081] This refers to the amount of oxygen produced through photosynthesis.

[0082] Total respiration and metabolic oxygen consumption, of which, It is dead organic matter. This represents the temperature corresponding to the k-th vertical layer.

[0083] This refers to the air-water interface exchange flux (re-oxidation).

[0084] in, , The maximum specific growth rate under optimal conditions. For the illumination constraint function, it can be adopted. Model, temperature function .

[0085] This is the temperature coefficient, an empirical value that needs to be determined experimentally. It is typically taken to be between 2.0 and 3.0.

[0086] This represents the current water temperature.

[0087] This is the reference temperature. The maximum photosynthetic rate is usually defined at this temperature.

[0088] In step S2 above, the device calculates the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the photovoltaic system geometric parameters to obtain the net spectral irradiance of the water surface. The core of this step is calculating the redistribution effect of the photovoltaic array on solar radiation, including radiation reduced by shading and radiation increased by reflection. The process is as follows: Figure 2 As shown.

[0089] Data preprocessing can be performed before this step, as detailed below:

[0090] Time discretization: Discretize all input data according to time steps. Discretization is performed (time resolution can be selected from 5 to 15 min) to capture rapid changes in radiation and environmental conditions.

[0091] Spectral discretization: Discretizing the input spectral radiation into bands (band spacing). This is to enable spectral coupling calculations; if only the total shortwave energy is available, then a typical standard spectral distribution is used for reconstruction.

[0092] Spatial gridding: Discretizing the water surface and photovoltaic deployment area into two-dimensional grid points. Each grid point corresponds to a water depth. With vertical grid This spatial discretization is a prerequisite for the coupled calculation of all subsequent vertical models (including optical transmission, thermal equilibrium, and ecological models).

[0093] The step of calculating the net spectral irradiance of the water surface based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system includes:

[0094] The incident angle of light is calculated based on the solar position parameters and the geometric parameters of the photovoltaic system; the incident angle is the cornerstone for calculating spectral reflectivity and the direction of light reflection. The incident angle of light is obtained through the solar position vector. (From the zenith angle) and solar azimuth (Calculation), photovoltaic module normal vector (Based on the tilt angle of photovoltaic modules) and photovoltaic module azimuth angle The dot product of (calculation) is obtained as follows:

[0095] ;

[0096] When light is incident perpendicularly When the light is parallel to the panel, .

[0097] The spectral reflectance is calculated based on the incident angle of light, wavelength, pollution factor, and aging factor; the spectral reflectance is not a constant, but rather a property of the wavelength (…). ), angle of incidence of light ( The function of time (t) is obtained by the following formula:

[0098] ;

[0099] in, This is the initial reflectance, usually provided by the manufacturer or obtained through laboratory measurement. For glass surfaces, it is calculated using the modified Fresnel equation, which describes the reflectance of light as it passes through different media (such as from air to glass) at different angles.

[0100] , As a pollutant, It is the pollution attenuation coefficient. It is the cumulative amount of dust accumulation (related to precipitation frequency and dust concentration).

[0101] , As an aging factor, It is the aging degradation coefficient. It refers to runtime.

[0102] The direction of light reflection is determined based on the type of reflection. The additional irradiance generated by the photovoltaic array reflection is calculated based on the reflected light direction, the radiation data, the spectral reflectance, and the shading factor. The surface characteristics of the photovoltaic module determine whether the light is concentrated in one direction (spectral reflection) or diffused in various directions (diffuse reflection). For relatively clean photovoltaic modules, specular reflection is dominant, and the Fresnel equation is used for calculation, with the reflected light direction following the law of "angle of incidence = angle of reflection". For photovoltaic modules with aged surfaces and severe dust accumulation, the bidirectional reflectance distribution function (BRDF) is used to describe the reflection. In practice, photovoltaic modules exhibit mixed reflection, employing a weighted mixed model (70% specular + 30% diffuse reflection).

[0103] Discretize the upper hemisphere space of the photovoltaic module as follows: A small directional unit Next, the reflected energy of each directional unit is calculated:

[0104] For each directional unit, its reflected radiant flux = (incident irradiance) ) × (spectral reflectance) ) × (Weight of this direction in BRDF) For geometric shading determination, for each directional element, the path of its reflected light is traced. The determination criterion is whether the reflected light hits the water surface and is not blocked by adjacent photovoltaic modules. The numerical implementation assigns a shading factor to each directional element. :

[0105] Unobstructed, reaching the entire water surface.

[0106] Completely obscured.

[0107] Partially obscured.

[0108] Then, the surface reception is summarized: traversing all directional cells, the reflected radiation flux reaching the water surface is accumulated to obtain the radiation flux at a specific grid point on the water surface. Additional irradiance generated by photovoltaic array reflection :

[0109] .

[0110] The net spectral irradiance of the water surface is calculated based on the radiation data and the additional irradiance.

[0111] Radiation received by the water surface without photovoltaic power is .

[0112] When there is photovoltaic power, the water surface receives radiation as follows: .in, The amount of radiation directly reduced by shading photovoltaic modules (calculated through geometric projection).

[0113] Ultimately, the change in net radiation is expressed through the net spectral irradiance of the water surface. To indicate:

[0114] .

[0115] This is the difference in radiant energy received by the water surface under two scenarios: with and without photovoltaic (PV) systems. This value will serve as a core input parameter, passed to subsequent models to drive the entire environmental impact assessment, and is a quantitative indicator used to evaluate the impact of PV systems.

[0116] In step S3 above, the device calculates the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface, and calculates the water body's stable layer structure based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer. The calculation of the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface includes:

[0117] The vertical light field distribution at each wavelength is calculated based on the net spectral irradiance of the water surface; prior to this step, input data preprocessing can be performed, including:

[0118] Band discretization, which divides the continuous spectrum Discretized into several (n) wavelength bands ( It can be divided into intervals of 1 nm, 5 nm, or 10 nm.

[0119] Band integration is used to calculate the energy within each discrete band. For the i-th band... Its incident irradiance is:

[0120] .

[0121] Obtain the attenuation coefficient for each band. Determine a representative attenuation coefficient. This parameter can be obtained through on-site measurement. The vertical optical field distribution at each wavelength can be calculated using the following formula:

[0122] .

[0123] In depth At that point, wavelength band Downward irradiance.

[0124] Water surface The incident irradiance in that band.

[0125] : The attenuation coefficient of this band.

[0126] Water depth, from the water surface ( Downward is the negative direction.

[0127] The photosynthetically active radiation distribution of the water body is calculated based on the vertical light field distribution at each wavelength.

[0128] Aquatic ecological processes primarily rely on energy in the 400-700 nm wavelength range, i.e., photosynthetically active radiation. The depth profile is calculated as follows:

[0129] .

[0130] Since band discretization has already been performed, this integral can be expressed as a summation:

[0131] .

[0132] It can represent the photosynthetically active radiation flux density at depth z.

[0133] The calculation of the water body's stable structure based on the photosynthetically active radiation distribution and the meteorological data, to obtain the temperature gradient and mixing layer depth, includes:

[0134] The volumetric heat source term is calculated based on the photosynthetically active radiation distribution; the volumetric heat source term... Light energy is absorbed by water and converted into heat energy, which is the key heat source driving changes in water temperature. For The calculation formula is as follows:

[0135] ;

[0136] This formula represents the amount of radiation energy absorbed per unit depth of water layer.

[0137] for Other numerical ranges, The calculation formula is:

[0138] ;

[0139] in, It is the shortwave radiation flux. Because... yes The main components, in practical applications, are often parameterized. The decay is converted into a heat source. A common simplification is:

[0140] , It is the water surface albedo.

[0141] The water body heat balance calculation parameters are determined based on the volumetric heat source term and the meteorological data, and then substituted into the water body heat balance equation. The temperature gradient and the mixing layer depth are determined based on the equation solution. The expression for the water body heat balance equation is:

[0142] ;

[0143] The rate of change of internal energy per unit volume of water over time. Water density Specific heat capacity of water (Water temperature).

[0144] : Convergence of net vertical turbulent heat flux.

[0145] , Let be the vertical mixing coefficient. Substituting the parameterized form into the governing equations, we obtain the final thermal diffusion equation:

[0146] .

[0147] This equation needs to be solved numerically. Water surface boundary conditions also need to be set, as explained below:

[0148] The water surface is the interface for heat exchange with the atmosphere and forms the upper boundary condition of the model. The net heat flux across the water surface (… Calculated using the following formula:

[0149] .

[0150] Absorbed shortwave radiation.

[0151] : Long-wave radiation downwards from the atmosphere.

[0152] Long-wave radiation emitted upwards from the surface of a water body.

[0153] : Sensitive heat flux.

[0154] Latent heat flux.

[0155] and Meteorological data is typically used, and calculations are performed using Bulk aerodynamic formulae.

[0156] The solution method for the above water body heat balance equation will not be elaborated further.

[0157] The mixing layer is a layer of water on the surface of a body of water that is thoroughly mixed due to turbulence caused by wind, waves, etc., and has a nearly uniform temperature and density. Its lower boundary is the depth of the mixing layer.

[0158] Using the temperature gradient method, the temperature gradient The maximum depth is the depth of the mixing layer.

[0159] In step S4 above, the device determines the parameters of the ecological response model based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters. The ecological response model (Nutrients-Phytoplankton-Zooplankton-Detritus-Dissolved Oxygen, NPZD-DO) incorporates the nonlinear effects of light inhibition and temperature promotion.

[0160] The overall structure and variable relationships of the ecological response model are as follows: Figure 3 As shown, for each vertical layer The value of k must be less than the depth of the mixed layer, and nutrients are assumed to be present. Primary producers (algae) ,consumer Dead organic matter Dissolved oxygen The coupled differential equations are given as follows:

[0161] ;

[0162] ;

[0163] ;

[0164] ;

[0165] ;

[0166] The parameters for the above ecological response model can be found in the above description and can be determined based on the temperature gradient. Determine T k Determine the vertical layer based on the depth of the mixed layer. .

[0167] In step S5 above, the device inputs the ecological response model parameters into the ecological response model, determines the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and assesses the radiation and ecological impact of the surface photovoltaic power station on the water body based on the photovoltaic ecological impact index. The preset benchmark values ​​may include... , which are the normalized baseline values ​​for photosynthetically active radiation, water temperature, and dissolved oxygen, respectively.

[0168] The determination of the photovoltaic ecological impact index based on the model solution results and preset benchmark values ​​includes:

[0169] Based on the model solution results and the preset benchmark values, the normalized values ​​for changes in photosynthetically active radiation, water temperature, and dissolved oxygen can be determined using the following formulas:

[0170] ;

[0171] ;

[0172] ;

[0173] Based on the normalized values ​​of the changes in photosynthetically active radiation, water temperature, and dissolved oxygen, and their corresponding weights, the Photovoltaic Impact Index (PVII) is calculated. PVII is a weighted function of the reduction in photosynthetically active radiation, temperature change, and ecological disturbance. It can be implemented using the following formula:

[0174] ;

[0175] in , , The weights can be determined by expert scoring or multi-objective optimization. PVII can output by season, year, and accident scenario, and can be used for constraint functions and optimization objectives.

[0176] Following the step of assessing the radiation and ecological impact of a surface photovoltaic power station on water bodies based on the photovoltaic ecological impact index, the method for assessing the radiation and ecological impact of a surface photovoltaic power station on water bodies further includes:

[0177] The constraints, photovoltaic ecological impact index, and independent variables of the photovoltaic power generation loss estimation model are determined based on the geometric parameters of the photovoltaic system.

[0178] The optimal values ​​for the geometric parameters of the photovoltaic system are obtained by minimizing the objective function constructed based on the photovoltaic ecological impact index and the photovoltaic power generation loss estimation model. These optimized geometric parameters allow for better layout of the photovoltaic modules, thus balancing power generation efficiency, equipment stability, and water environment protection.

[0179] Design variable: Whether each photovoltaic module is installed component tilt angle ,position .

[0180] Objective function: ,in , The weighting coefficient is determined by regulatory thresholds or expert weighting. This is a photovoltaic power generation loss estimation model used to estimate the relative reduction in power generation.

[0181] Constraint: Total Coverage Structural safety distances, maintenance access widths, etc.

[0182] Solution methods: Genetic algorithm, simulated annealing or Bayesian optimization can be used.

[0183] The project was implemented as follows:

[0184] Time step Recommended time: 5-15 minutes; vertical layer thickness depends on water depth and spectral attenuation coefficient. , shallow lake A depth of 0.1 to 0.5 m is acceptable.

[0185] The modular software architecture is adopted: Module A (data acquisition and preprocessing), Module B (photovoltaic reflection radiation calculation), Module C (water body light field distribution calculation), Module D (water body stable layer structure calculation), Module E (ecological response model NPZD-DO), and Module F (optimization / visualization).

[0186] Recommended programming environment: Python (numpy / scipy), Fortran / C++ (for numerical performance), parallelization (ray tracing and grid looping can use MPI / parallel libraries).

[0187] Inspection and verification process:

[0188] Static verification: The correctness of ray tracing and geometric occlusion logic is verified using an idealized scenario (single direct sunlight, no diffuse reflection).

[0189] Field experimental calibration: Inversion using field observation data and And examine the goodness of fit between the time-series temperature and DO.

[0190] Sensitivity analysis: for key parameters ( Vertical mixing coefficient , , Perform a global sensitivity analysis to determine the sources of uncertainty.

[0191] The method for assessing the radiation and ecological impacts of surface photovoltaic (PV) power stations on water bodies provided in this invention involves acquiring radiation data, meteorological data, solar position parameters, PV system geometric parameters, and aquatic ecosystem parameters. Based on the radiation data, solar position parameters, and PV system geometric parameters, PV reflected radiation is calculated to obtain the net spectral irradiance of the water surface. The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and mixing layer depth. Ecological response model parameters are determined based on the temperature gradient, mixing layer depth, and aquatic ecosystem parameters. These parameters are then substituted into the ecological response model, and the PV ecological impact index is determined based on the model's solution and a preset benchmark value. The PV ecological impact index is used to assess the radiation and ecological impacts of surface PV power stations on water bodies. This method can accurately assess the radiation and ecological impacts of surface PV power stations on water bodies, thereby contributing to the improvement of water environment protection levels.

[0192] In the above optional embodiments, the step of calculating the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the photovoltaic system geometric parameters to obtain the net spectral irradiance of the water surface includes:

[0193] The incident angle of light is calculated based on the solar position parameters and the geometric parameters of the photovoltaic system; this can be referred to the above embodiments for explanation, and will not be repeated here.

[0194] The spectral reflectance is calculated based on the incident angle of light, wavelength, pollution factor, and aging factor; the above embodiments can be referred to for explanation, and will not be repeated here.

[0195] The direction of light reflection is determined according to the type of reflection. Based on the direction of light reflection, the radiation data, the spectral reflectance, and the shading factor, the additional irradiance generated by the reflection from the photovoltaic array is calculated. This can be referred to the above embodiment for explanation, and will not be repeated here.

[0196] The net spectral irradiance of the water surface is calculated based on the radiation data and the additional irradiance. This can be referred to the above embodiments for further explanation, and will not be repeated here.

[0197] In the above optional embodiments, the step of calculating the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface includes:

[0198] The vertical light field distribution of each wavelength is calculated based on the net spectral irradiance of the water surface; this can be referred to the above embodiment for explanation, and will not be repeated here.

[0199] The photosynthetically active radiation distribution of the water body is calculated based on the vertical light field distribution at each wavelength. This can be referred to the above embodiments for explanation, and will not be repeated here.

[0200] In the above optional embodiments, the step of calculating the water body stability structure based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and mixing layer depth includes:

[0201] The volumetric heat source term is calculated based on the photosynthetically active radiation distribution; this can be referred to the above embodiments for explanation, and will not be repeated here.

[0202] The water body heat balance calculation parameters are determined based on the volumetric heat source term and the meteorological data, and then substituted into the water body heat balance equation. The temperature gradient and the mixing layer depth are determined based on the equation solution. This can be referred to the above embodiment for further explanation and will not be repeated here.

[0203] In the above optional embodiments, determining the photovoltaic ecological impact index based on the model solution results and preset benchmark values ​​includes:

[0204] The normalized values ​​of the changes in photosynthetically active radiation, water temperature, and dissolved oxygen are determined based on the solution results of the model and the preset benchmark values; the above embodiments can be referred to for explanation, and will not be repeated here.

[0205] The photovoltaic ecological impact index is calculated based on the normalized values ​​of the changes in photosynthetically active radiation, water temperature, and dissolved oxygen, and their corresponding weights. This can be referred to the above embodiments for further explanation and will not be repeated here.

[0206] In the above optional embodiments, after the step of assessing the radiation and ecological impact of the floating photovoltaic power station on the water body according to the photovoltaic ecological impact index, the method for assessing the radiation and ecological impact of the floating photovoltaic power station on the water body further includes:

[0207] The constraints, photovoltaic ecological impact index, and independent variables of the photovoltaic power generation loss estimation model are determined based on the geometric parameters of the photovoltaic system; the above embodiments can be referred to for explanation, and will not be repeated here.

[0208] The optimal values ​​for the geometric parameters of the photovoltaic system are obtained by minimizing the objective function constructed based on the photovoltaic ecological impact index and the photovoltaic power generation loss estimation model. This can be referred to the above embodiments for further explanation and will not be repeated here.

[0209] Figure 4 This is a schematic diagram of the structure of a device for assessing the radiation and ecological impact of a surface photovoltaic power station on water bodies, provided in an embodiment of the present invention. Figure 4 As shown, the apparatus for assessing the radiation and ecological impact of a surface photovoltaic power station on water bodies provided in this embodiment of the invention includes an acquisition unit 401, a first calculation unit 402, a second calculation unit 403, a determination unit 404, and an assessment unit 405, wherein:

[0210] The acquisition unit 401 is used to acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters; the first calculation unit 402 is used to calculate photovoltaic reflected radiation based on the radiation data, solar position parameters, and photovoltaic system geometric parameters to obtain the net spectral irradiance of the water surface; the second calculation unit 403 is used to calculate the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface, and to calculate the water body's stable layer structure based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and mixing layer depth; the determination unit 404 is used to determine the ecological response model parameters based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters; the evaluation unit 405 is used to substitute the ecological response model parameters into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and evaluate the radiation and ecological impact of the surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0211] Specifically, the acquisition unit 401 in the device is used to acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters; the first calculation unit 402 is used to calculate photovoltaic reflected radiation based on the radiation data, solar position parameters, and photovoltaic system geometric parameters to obtain the net spectral irradiance of the water surface; the second calculation unit 403 is used to calculate the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface, and to calculate the water body's stable layer structure based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and mixing layer depth; the determination unit 404 is used to determine the ecological response model parameters based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters; the evaluation unit 405 is used to substitute the ecological response model parameters into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and evaluate the radiation and ecological impact of the surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0212] The apparatus provided in this invention for assessing the radiation and ecological impacts of surface photovoltaic (PV) power plants on water bodies includes: acquiring radiation data, meteorological data, solar position parameters, PV system geometric parameters, and aquatic ecosystem parameters; calculating PV reflected radiation based on the radiation data, solar position parameters, and PV system geometric parameters to obtain the net spectral irradiance of the water surface; calculating the photosynthetically active radiation distribution of the water body based on the net spectral irradiance; calculating the water body's stable layer structure based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and mixing layer depth; determining ecological response model parameters based on the temperature gradient, mixing layer depth, and aquatic ecosystem parameters; substituting the ecological response model parameters into the ecological response model; determining the PV ecological impact index based on the model solution results and preset benchmark values; and assessing the radiation and ecological impacts of surface PV power plants on water bodies based on the PV ecological impact index. This apparatus can accurately assess the radiation and ecological impacts of surface PV power plants on water bodies, thereby contributing to the improvement of water environment protection levels.

[0213] The embodiments of the present invention provide an apparatus for assessing the radiation and ecological impact of a surface photovoltaic power station on water bodies. Specifically, it can be used to execute the processing flow of the above-described method embodiments. Its functions will not be repeated here, but can be referred to the detailed description of the above-described method embodiments.

[0214] Figure 5 This is a schematic diagram of the physical structure of a computer device provided in an embodiment of the present invention, such as... Figure 5 As shown, the computer device includes: a memory 501, a processor 502, and a computer program stored in the memory 501 and executable on the processor 502. When the processor 502 executes the computer program, it implements the following method:

[0215] Acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters;

[0216] The net spectral irradiance of the water surface is obtained by calculating the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system.

[0217] The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance of the water surface, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer.

[0218] The parameters of the ecological response model are determined based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters.

[0219] Substitute the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and conduct an assessment of the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0220] This embodiment discloses a computer program product, which includes a computer program that, when executed by a processor, implements the following method:

[0221] Acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters;

[0222] The net spectral irradiance of the water surface is obtained by calculating the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system.

[0223] The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance of the water surface, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer.

[0224] The parameters of the ecological response model are determined based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters.

[0225] Substitute the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and conduct an assessment of the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0226] This embodiment provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the following method:

[0227] Acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters;

[0228] The net spectral irradiance of the water surface is obtained by calculating the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system.

[0229] The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance of the water surface, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer.

[0230] The parameters of the ecological response model are determined based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters.

[0231] Substitute the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and conduct an assessment of the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

[0232] Compared with existing technologies, the method for assessing the radiation and ecological impacts of surface photovoltaic (PV) power stations provided in this invention involves acquiring radiation data, meteorological data, solar position parameters, PV system geometric parameters, and aquatic ecosystem parameters. Based on the radiation data, solar position parameters, and PV system geometric parameters, PV reflected radiation is calculated to obtain the net spectral irradiance of the water surface. The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and mixing layer depth. Ecological response model parameters are determined based on the temperature gradient, mixing layer depth, and aquatic ecosystem parameters. These parameters are then substituted into the ecological response model, and the PV ecological impact index is determined based on the model's solution and a preset benchmark value. The PV ecological impact index is used to assess the radiation and ecological impacts of surface PV power stations on water bodies. This method accurately assesses the radiation and ecological impacts of surface PV power stations on water bodies, thereby contributing to improved water environment protection.

[0233] 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 embodied 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.

[0234] 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.

[0235] 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.

[0236] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment 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.

[0237] In the description of this specification, the references to terms such as "an embodiment," "a specific embodiment," "some embodiments," "for example," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0238] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies, characterized in that, include: Acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters; The net spectral irradiance of the water surface is obtained by calculating the photovoltaic reflected radiation based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system. The photosynthetically active radiation distribution of the water body is calculated based on the net spectral irradiance of the water surface, and the water body's stable layer structure is calculated based on the photosynthetically active radiation distribution and the meteorological data to obtain the temperature gradient and the depth of the mixing layer. The parameters of the ecological response model are determined based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters. Substitute the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and conduct an assessment of the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

2. The method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies according to claim 1, characterized in that, The step of calculating the net spectral irradiance of the water surface based on the radiation data, the solar position parameters, and the geometric parameters of the photovoltaic system includes: The angle of incidence of light is calculated based on the solar position parameters and the geometric parameters of the photovoltaic system. The spectral reflectance is calculated based on the light incident angle, wavelength, pollution factor, and aging factor. The direction of light reflection is determined based on the type of reflection, and the additional irradiance generated by the reflection from the photovoltaic array is calculated based on the direction of light reflection, the radiation data, the spectral reflectance, and the shading factor. The net spectral irradiance of the water surface is calculated based on the radiation data and the additional irradiance.

3. The method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies according to claim 1, characterized in that, The calculation of the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface includes: The vertical light field distribution at each wavelength was calculated based on the net spectral irradiance of the water surface. The photosynthetically active radiation distribution of the water body is calculated based on the vertical light field distribution at each wavelength.

4. The method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies according to claim 1, characterized in that, The calculation of the water body's stable structure based on the photosynthetically active radiation distribution and the meteorological data, to obtain the temperature gradient and mixing layer depth, includes: The volumetric heat source term is calculated based on the photosynthetically active radiation distribution. The water body heat balance calculation parameters are determined based on the volume heat source term and the meteorological data, and then substituted into the water body heat balance equation. The temperature gradient and the mixing layer depth are determined based on the equation solution results.

5. The method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies according to claim 1, characterized in that, The determination of the photovoltaic ecological impact index based on the model solution results and preset benchmark values ​​includes: Based on the solution results of the model and the preset benchmark values, the normalized values ​​of the changes in photosynthetically active radiation, water temperature, and dissolved oxygen are determined. The photovoltaic ecological impact index is calculated based on the normalized values ​​of the changes in photosynthetically active radiation, water temperature, and dissolved oxygen, and their corresponding weights.

6. The method for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies according to any one of claims 1 to 5, characterized in that, Following the step of assessing the radiation and ecological impact of a surface photovoltaic power station on water bodies based on the photovoltaic ecological impact index, the method for assessing the radiation and ecological impact of a surface photovoltaic power station on water bodies further includes: The constraints, photovoltaic ecological impact index, and independent variables of the photovoltaic power generation loss estimation model are determined based on the geometric parameters of the photovoltaic system. The optimal values ​​of the geometric parameters of the photovoltaic system are obtained by solving the objective function constructed based on the photovoltaic ecological impact index and the photovoltaic power generation loss estimation model, with the objective function being the minimum value.

7. A device for assessing the radiation and ecological impacts of a surface photovoltaic power station on water bodies, characterized in that, include: The acquisition unit is used to acquire radiation data, meteorological data, solar position parameters, photovoltaic system geometric parameters, and aquatic ecosystem parameters; The first calculation unit is used to perform photovoltaic reflected radiation calculation based on the radiation data, the solar position parameters and the photovoltaic system geometric parameters to obtain the net spectral irradiance of the water surface. The second calculation unit is used to calculate the photosynthetically active radiation distribution of the water body based on the net spectral irradiance of the water surface, and to calculate the water body's stable layer structure based on the photosynthetically active radiation distribution and the meteorological data, thereby obtaining the temperature gradient and the depth of the mixing layer. The determining unit is used to determine the ecological response model parameters based on the temperature gradient, the mixing layer depth, and the aquatic ecosystem parameters. The assessment unit is used to input the parameters of the ecological response model into the ecological response model, determine the photovoltaic ecological impact index based on the model solution results and preset benchmark values, and assess the radiation and ecological impact of the water surface photovoltaic power station on the water body based on the photovoltaic ecological impact index.

8. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method of any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method of any one of claims 1 to 6.

10. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the method of any one of claims 1 to 6.

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