Household Photovoltaic Power Station Scheme Generation Method and Corresponding Intelligent Design Platform

Abstract

An embodiment of the present application provides a method for generating a household photovoltaic power station solution and a corresponding intelligent design platform. The method includes: obtaining meteorological / light resource data of the location where the household photovoltaic power station to be designed is located, and performing simulation and calculation based on the meteorological / light resource data to obtain corresponding technical solutions and economic solutions, and then generating corresponding photovoltaic power station solutions based on the technical solutions and economic solutions. This solution has functions such as intelligent analysis of meteorological resources and light resources, intelligent design of household photovoltaic electrical systems, power generation calculation and system efficiency / level loss calculation, investment and revenue analysis, and energy conservation and emission reduction analysis and calculation, and realizes standardized operation of solution design through an integrated intelligent platform, thereby reducing the technical difficulty of household photovoltaic solution design, lightening the burden on technical personnel, and improving work efficiency and quality.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology. Specifically, the present application relates to a method for generating a household photovoltaic power station solution and a corresponding intelligent design platform. Background Art

[0002] With the growing development of the distributed photovoltaic industry and its technical field and the rapid expansion of the scale of the household photovoltaic industry, the number of household photovoltaic projects has increased massively, and the application scenarios have become increasingly complex. At the same time, due to the characteristics of household photovoltaic power stations such as small system, diversified scenarios, and flexible operation modes, the design of its overall technical solution requires accurate, fast, and diversified requirements for multiple professional directions such as meteorological resource analysis, power generation calculation, electrical system, equipment and material statistics, cost / benefit analysis, and flexible solution adjustment. In addition, the owners of household photovoltaic projects generally do not have professional knowledge of photovoltaics, and it is difficult for technical or sales personnel of developers or EPC (Engineering Procurement Construction, one of the engineering general contracting models) to independently complete the overall technical solution involving multiple disciplines.

[0003] In the prior art, when designing a household photovoltaic power station, data is generally collected for the target project, including the meteorological and geographical data of the project, the construction site data and the equipment parameter data; the overall technical plan of the target project is manually designed based on the collected data; professional calculations and plan preparation are performed using different tool software according to the design plan; the design plan and calculation results are summarized and revised. In other words. The existing technology solution needs to rely on multi-professional cooperation, manual design and preparation, and requires the use of a variety of professional software or tool software. Therefore, the scientificity and rationality of the overall technical design plan are difficult to unify and standardize, and the iterative optimization of the plan itself is limited by objective factors such as the personal experience and work efficiency of engineers. Summary of the invention

[0004] The purpose of this application is to solve at least one of the above technical defects. The technical solutions provided by the embodiments of this application are as follows:

[0005] In a first aspect, an embodiment of the present application provides a method for generating a household photovoltaic power station solution, comprising:

[0006] Obtain meteorological / light resource data for the location of the household photovoltaic power station to be designed;

[0007] Performing simulation based on the meteorological / light resource data and the structure of the installation area of ​​the household photovoltaic power station to be designed to obtain a corresponding component arrangement model and an electrical wiring model, and performing simulation calculation based on the location of the household photovoltaic power station to be designed to obtain terrain influence parameters;

[0008] Based on the component layout model, determine the inverter matching scheme, stringing scheme, and system efficiency analysis scheme. Based on the electrical wiring model, determine the corresponding equipment parameters and conductor parameters;

[0009] Based on the component layout model, the terrain influence parameters, the inverter matching scheme, the stringing scheme, the system efficiency analysis scheme, the equipment parameters, and the conductor parameters, obtain the power generation amount, energy conservation and emission reduction amount, and investment return rate of the to-be-designed household photovoltaic power station within a preset period;

[0010] Take the component layout model, the electrical wiring model, the inverter matching scheme, the stringing scheme, the equipment parameters, the conductor parameters, the power generation amount, and the energy conservation and emission reduction amount as technical solutions, take the investment return rate as an economic solution, and generate a corresponding household photovoltaic power station solution based on the technical solution and the economic solution.

[0011] In an alternative embodiment of the present application, the obtaining of the meteorological / light resource data of the location of the to-be-designed household photovoltaic power station includes:

[0012] Obtain the satellite meteorological / light resource data of the location, and obtain the real-time meteorological / light resource data reported by the user or the meteorological / light resource data with a long time series of historical accumulation;

[0013] Fuse the satellite meteorological / light resource data and the real-time meteorological / light resource data or the meteorological / light resource data with a long time series of historical accumulation to obtain the meteorological / light resource data.

[0014] In an alternative embodiment of the present application, the structure of the installation area includes the slope and orientation of the installation area;

[0015] The simulation based on the meteorological / light resource data and the structure of the installation area of the to-be-designed household photovoltaic power station to obtain the corresponding component layout model and electrical wiring model includes:

[0016] Based on the slope and orientation of the installation area, divide the installation area into at least one unit sub-area and at least one unit area, and determine the installation inclination angle and azimuth angle of the photovoltaic modules in each unit sub-area to obtain the corresponding component layout model;

[0017] Determine the wiring method from each photovoltaic module to the grid connection point to obtain the corresponding electrical wiring model.

[0018] In an alternative embodiment of the present application, the simulation calculation based on the location of the to-be-designed household photovoltaic power station to obtain the terrain influence parameters includes:

[0019] Obtain the surrounding horizon information of the location where the household photovoltaic power station to be designed is located, and perform remote shadow occlusion calculation to obtain the terrain influence parameters.

[0020] In an alternative embodiment of the present application, the determining the inverter matching scheme, the stringing scheme, and the system efficiency analysis scheme based on the component layout model includes:

[0021] Determine the inverter matching scheme and the stringing scheme in combination with the preset national standard requirements;

[0022] Based on the component layout model, obtain the dust occlusion loss, the diffuse reflection coefficient, the in-string / inter-string mismatch coefficient, and the system unavailability rate, and based on the dust occlusion loss, the diffuse reflection coefficient, the in-string / inter-string mismatch coefficient, and the system unavailability rate, calculate to obtain system loss coefficients such as the effective irradiance loss coefficient, the temperature loss coefficient, the DC line loss coefficient, the actual inverter efficiency, and the AC line loss, and then obtain the system efficiency analysis scheme.

[0023] In a second aspect, an embodiment of the present application provides an intelligent design platform for a household photovoltaic power station, including:

[0024] A meteorological resource intelligent analysis unit for obtaining meteorological / light resource data of the location where the household photovoltaic power station to be designed is located;

[0025] A household photovoltaic power station simulation design unit for simulating based on the meteorological / light resource data and the structure of the installation area of the household photovoltaic power station to be designed to obtain a corresponding component layout model and an electrical wiring model, and performing simulation calculations based on the location where the household photovoltaic power station to be designed is located to obtain terrain influence parameters; based on the component layout model, determine the inverter matching scheme, the stringing scheme, and the system efficiency analysis scheme, and based on the electrical wiring model, determine the corresponding equipment parameters and conductor parameters;

[0026] A household photovoltaic data calculation unit for obtaining the power generation amount, the energy conservation and emission reduction amount, and the investment return rate of the household photovoltaic power station to be designed within a preset period based on the component layout model, the terrain influence parameters, the inverter matching scheme, the stringing scheme, the system efficiency analysis scheme, the equipment parameters, and the conductor parameters; taking the component layout model, the electrical wiring model, the inverter matching scheme, the stringing scheme, the equipment parameters, the conductor parameters, the power generation amount, and the energy conservation and emission reduction amount as technical solutions, taking the investment return rate as an economic solution, and generating a corresponding household photovoltaic power station solution based on the technical solutions and the economic solution.

[0027] In an alternative embodiment of the present application, the intelligent meteorological resource analysis unit includes: a meteorological / optical resource database module and a meteorological / optical resource intelligent fusion analysis module:

[0028] The meteorological / optical resource database module is used to obtain satellite meteorological / optical resource data of the location, and obtain real-time meteorological / optical resource data reported by users or long-term accumulated historical meteorological / optical resource data;

[0029] The meteorological / optical resource intelligent fusion analysis module is used to fuse the satellite meteorological / optical resource data and the real-time meteorological / optical resource data or the long-term accumulated historical meteorological / optical resource data to obtain the meteorological / optical resource data.

[0030] In an alternative embodiment of the present application, the structure of the installation area includes the slope and orientation of the installation area;

[0031] The household photovoltaic power station simulation design unit includes: a building and photovoltaic installation area modeling module and a household photovoltaic electrical system modeling module, where:

[0032] The building and photovoltaic installation area modeling module is used to divide the installation area into at least one unit sub-area and at least one unit area based on the slope and orientation of the installation area, and determine the installation inclination and azimuth angle of the photovoltaic modules in each unit sub-area to obtain the corresponding component layout model;

[0033] The household photovoltaic electrical system modeling module is used to determine the wiring method from each photovoltaic module to the grid connection point to obtain the corresponding electrical wiring model.

[0034] In an alternative embodiment of the present application, the household photovoltaic power station simulation design unit further includes a terrain influence modeling and analysis module for:

[0035] Obtain the horizon information around the location of the household photovoltaic power station to be designed, and perform remote shadow occlusion calculation to obtain the terrain influence parameters and models.

[0036] In an alternative embodiment of the present application, the household photovoltaic power station simulation design unit further includes: a component-inverter string and matching design module and a photovoltaic system efficiency design module, where:

[0037] The component-inverter string and matching design module is used to determine the inverter matching scheme and the string scheme in combination with the preset national standard requirements;

[0038] The photovoltaic system efficiency design module is used to obtain the dust occlusion loss, diffuse reflection coefficient, in-series / inter-series mismatch coefficient, and system unavailability rate based on the component layout model, and based on the dust occlusion loss, the diffuse reflection coefficient, the in-series / inter-series mismatch coefficient, and the system unavailability rate, and calculate the effective irradiance loss coefficient, temperature loss coefficient, DC line loss coefficient, actual inverter efficiency, AC line loss and other system loss coefficients, so as to obtain the system efficiency analysis solution.

[0039] In a third aspect, an embodiment of the present application provides an electronic device, including a memory and a processor;

[0040] A computer program is stored in the memory;

[0041] The processor is configured to execute the computer program to implement the method provided in the first aspect embodiment or any optional embodiment of the first aspect.

[0042] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method provided in the first aspect embodiment or any optional embodiment of the first aspect is implemented.

[0043] The beneficial effects brought by the technical solution provided by the present application are as follows:

[0044] It has functions of intelligent analysis of meteorological resources and light resources, intelligent design of household photovoltaic electrical systems, power generation calculation and system efficiency / level losses calculation, investment and income analysis, and energy conservation and emission reduction analysis calculation, and realizes standardized operation of scheme design through an integrated intelligent platform, thereby reducing the technical difficulty of household photovoltaic scheme design, lightening the burden on technical personnel, and improving work efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for description in the embodiments of the present application.

[0046] Figure 1 It is a schematic flowchart of a method for generating a household photovoltaic power station scheme provided by an embodiment of the present application;

[0047] Figure 2 It is an overall flowchart of generating a household photovoltaic power station scheme using a household photovoltaic power station intelligent design platform in an example of an embodiment of the present application;

[0048] Figure 3 It is an overall architecture diagram of a household photovoltaic power station intelligent design platform provided by an embodiment of the present application;

[0049] Figure 4Schematic structural diagram of an electronic device provided by an embodiment of the present application. Detailed implementation manners

[0050] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be construed as a limitation of the present application.

[0051] Those skilled in the art of the present technology can understand that, unless specifically stated otherwise, the singular forms "a", "an", "the" and "said" used herein may also include the plural forms. It should be further understood that the term "comprising" used in the specification of the present application means the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0052] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0053] First, several terms related to the present application are introduced and explained:

[0054] Photovoltaic module: A combined device of solar cells that has encapsulation and internal connection, can independently provide DC output, and is the smallest indivisible unit.

[0055] String: In a photovoltaic power generation system, after several photovoltaic modules are connected in series, a circuit unit with a certain DC output is formed.

[0056] Unit area: A photovoltaic module installation unit area composed of one or several connected unit sub-areas, usually referring to a large building roof with different roof surfaces at multiple angles; within this area, the installation inclinations and azimuth angles of the photovoltaic modules included in different unit sub-areas can be different.

[0057] Unit sub-area: The smallest unit area for installing photovoltaic modules, within which the installation inclinations and azimuth angles of all photovoltaic modules are kept consistent.

[0058] Figure 1The flowchart of a method for generating a household photovoltaic power station solution provided by an embodiment of the present application is shown as follows. Figure 1 The method may include:

[0059] Step S101: Obtain the meteorological / light resource data of the location where the household photovoltaic power station to be designed is located.

[0060] The meteorological / light resource data may include the annual total radiation, the average peak sunshine hours of each month, the monthly, daily, and hourly global horizontal irradiance (GHI), direct normal irradiance (DNI), and diffuse horizontal irradiance (DHI) on the horizontal plane.

[0061] Step S102: Based on the meteorological / light resource data and the structure of the installation area of the household photovoltaic power station to be designed, perform simulations to obtain the corresponding component layout model and electrical wiring model, and perform simulation calculations based on the location where the household photovoltaic power station to be designed is located to obtain the terrain influence parameters.

[0062] The structure of the installation area includes the slope and orientation of the installation area, etc. For example, if the installation area is the inclined roof of a certain building, the corresponding structure of the installation area is the slope and orientation of the inclined roof, etc.

[0063] The location where the household photovoltaic power station to be designed is located can indicate the corresponding terrain data.

[0064] Specifically, based on the meteorological / light resource data and the structure of the installation area of the household photovoltaic power station to be designed, simulation modeling can be performed to obtain a component layout model suitable for the installation area, and further configure a suitable electrical wiring model according to the component layout model. Based on the terrain data indicated by the location where the household photovoltaic power station to be designed is located, simulation modeling can be performed to obtain the corresponding terrain influence parameters, that is, obtain the influence of the terrain (or horizon) on the sun's position and irradiance.

[0065] Step S103: Based on the component layout model, determine the inverter matching scheme, string scheme, and system efficiency analysis scheme. Based on the electrical wiring model, determine the corresponding equipment parameters and conductor parameters.

[0066] Specifically, after determining the simulated component layout model, it is necessary to further determine the inverter matching scheme, string scheme, system efficiency analysis scheme, etc. After determining the electrical wiring model, it is necessary to further perform component selection, that is, determine the corresponding equipment parameters and conductor parameters.

[0067] Step S104: Based on the component layout model, terrain influence parameters, inverter matching scheme, string scheme, system efficiency analysis scheme, equipment parameters, and conductor parameters, obtain the power generation amount, energy conservation and emission reduction amount, and investment return rate of the household photovoltaic power station to be designed within a preset period.

[0068] Specifically, after completing the above steps, the configuration of the technical solution is completed, and the calculation of the economic solution can be carried out in this step.

[0069] Step S105: Take the component layout model, electrical wiring model, inverter matching scheme, string scheme, equipment parameters, conductor parameters, power generation amount, and energy conservation and emission reduction amount as the technical solution, take the return on investment as the economic solution, and generate the corresponding household photovoltaic power station solution based on the technical solution and the economic solution.

[0070] Specifically, output the technical solution and the economic solution obtained in the above steps together as the corresponding household photovoltaic power station solution.

[0071] It should be noted that the method for generating a household photovoltaic power station solution provided in the embodiments of the present application can be implemented through the household photovoltaic power station intelligent design platform provided in the embodiments of the present application. Specifically, the intelligent design platform may include a meteorological resource intelligent analysis unit, a household photovoltaic power station simulation design unit (which can be further divided into a household photovoltaic power station simulation unit and a household photovoltaic power station intelligent design unit), and a household photovoltaic data calculation unit.

[0072] As Figure 2 shown, the process of obtaining the household photovoltaic power station solution may include: the meteorological resource intelligent analysis unit conducts light resource analysis on the target power station, performs fusion calculation between the satellite and measured light data in this area through various algorithms, and takes the fusion result as the light resource input data of the target power station and imports it into the power station simulation unit; the household photovoltaic power station simulation unit imports the light resource data, conducts light resource and meteorological simulation, terrain (horizon) simulation, and system and equipment electrical model simulation on the target power station, and imports the results into the intelligent design unit; the household photovoltaic power station intelligent design unit imports the simulation data results, conducts intelligent design on the household photovoltaic power station, generates a complete design solution, and imports the solution and parameters into the data calculation unit; the data calculation unit imports the simulation data, equipment parameters, and system design solution, conducts full-system simulation calculation on the household photovoltaic power station, and exports the standard design file and calculation result file of the power station model.

[0073] It can be understood that the unit division and working process of the household photovoltaic power station intelligent design platform provided in the embodiments of the present application may be different, but the overall process of generating the household photovoltaic power station conforms to the method for generating a household photovoltaic power station solution in the embodiments of the present application.

[0074] The solution provided by this application has functions of intelligent analysis of meteorological resources and light resources, intelligent design of household photovoltaic electrical systems, calculation of power generation and system efficiency / level losses, investment and revenue analysis, and energy conservation and emission reduction analysis and calculation. Through an integrated intelligent platform, it realizes standardized operation of the solution design, thereby reducing the technical difficulty of household photovoltaic solution design, lightening the burden on technical personnel, and improving work efficiency and quality.

[0075] Next, the technical solution of this application will be described in detail through the function implementation of each unit and module of the household photovoltaic power station intelligent design platform provided by this application.

[0076] In an alternative embodiment of this application, the meteorological resource intelligent analysis unit includes: a meteorological / light resource database module and a meteorological / light resource intelligent fusion analysis module:

[0077] The meteorological / light resource database module is used to obtain satellite meteorological / light resource data of the location and obtain real-time meteorological / light resource data reported by users or long-term historical accumulated meteorological / light resource data;

[0078] The meteorological / light resource intelligent fusion analysis module is used to fuse satellite meteorological / light resource data and real-time meteorological / light resource data or long-term historical accumulated meteorological / light resource data to obtain meteorological / light resource data.

[0079] Specifically, a national meteorological / light resource database module (i.e., the meteorological / light resource database module) is established to provide meteorological / light resource satellite data and measured data information of the project site; this information includes data and calculation results of global horizontal irradiance (GHI), direct normal irradiance (DNI), diffuse horizontal irradiance (DHI), plane of array irradiance (POA), and photovoltaic maximum power tilt / azimuth angle (TILT).

[0080] Configure the meteorological / light resource intelligent fusion analysis module, including:

[0081] (1) Extract satellite meteorological / light resource data of the project site (i.e., the location where the household photovoltaic power station to be designed is located);

[0082] (2) Provide a measured data input template, and the template information includes: time information (including year, month, day, hour); light resource information (including global horizontal irradiance (GHI), direct normal irradiance (DNI), diffuse horizontal irradiance (DHI)); meteorological information (including dry bulb temperature, atmospheric pressure, wind speed), for uploading measured meteorological / light resource data of the project site;

[0083] (3) Provide an intelligent algorithm module to analyze, compare, and perform fusion correction calculations between satellites and measured data in this area, and import the analysis and calculation results as the final resource data of the project into the power station simulation unit and the project data calculation unit.

[0084] In an alternative embodiment of the present application, the structure of the installation area includes the slope and orientation of the installation area;

[0085] The household photovoltaic power station simulation design unit includes: a building and photovoltaic installation area modeling module and a household photovoltaic electrical system modeling module, where:

[0086] The building and photovoltaic installation area modeling module is used to divide the installation area into at least one unit sub-area and at least one unit area based on the slope and orientation of the installation area, and determine the installation inclination and azimuth angle of the photovoltaic modules in each unit sub-area to obtain the corresponding component layout model;

[0087] The household photovoltaic electrical system modeling module is used to determine the wiring method from each photovoltaic module to the grid connection point to obtain the corresponding electrical wiring model.

[0088] Furthermore, the household photovoltaic power station simulation design unit further includes a terrain influence modeling and analysis module, which is used for:

[0089] Obtain the surrounding horizon information of the location where the household photovoltaic power station to be designed is located, and perform calculation of distant shadow occlusion to obtain the terrain influence parameters and models. Specifically, configuring the household photovoltaic power station simulation unit to realize the modeling of the household photovoltaic system may include:

[0090] (1) Configure the household photovoltaic power generation equipment database and parameter model library, that is, establish a photovoltaic module and inverter equipment database to provide the necessary component and inverter parameter information for subsequent calculations, including: all electrical parameters provided by the component manufacturer (for example, 22), as well as model, weight, size, material, type, attenuation coefficient; all electrical parameters provided by the inverter manufacturer (for example, 23) and model, weight, size, protection function.

[0091] (2) Configure the building and photovoltaic installation area modeling module, divide the household photovoltaic installation area into "unit areas" and "unit sub-areas", and configure the household photovoltaic system for each unit area / unit sub-area according to the actual conditions such as the slope and orientation of different installation areas, including the selection of photovoltaic modules and inverters for each unit area / sub-area, the installation inclination and azimuth angle of the components, the installed capacity, the stringing scheme, the temperature model, the length of each string cable, and the length of the busbar cable.

[0092] (3) Configure the simulation analysis of the surrounding horizon. By inputting the simulation radius, displacement amount, and step size, calculate the surrounding horizon profile (i.e., the horizon profile around the location where the household PV power station to be designed is located) and the resulting irradiance loss and power loss.

[0093] In an alternative embodiment of the present application, the household PV power station simulation design unit further includes: a component-inverter string and matching design module and a PV system efficiency design module, where:

[0094] The component-inverter string and matching design module is used to determine the inverter matching scheme and the string scheme in combination with the preset national standard requirements;

[0095] The PV system efficiency design module is used to obtain the dust shading loss, diffuse reflection coefficient, in-series / inter-series mismatch coefficient, and system unavailability rate based on the component layout model, and based on the dust shading loss, the diffuse reflection coefficient, the in-series / inter-series mismatch coefficient, the system unavailability rate, and calculate the effective irradiance loss coefficient, temperature loss coefficient, DC line loss coefficient, actual inverter efficiency, AC line loss and other system loss coefficients, and then obtain the system efficiency analysis scheme.

[0096] Specifically, configuring the household PV intelligent design unit may include:

[0097] (1) Configure the PV system efficiency design module, that is, configure the PV system efficiency parameters, including dust shading loss, diffuse reflection coefficient, in-series / inter-series mismatch, and system unavailability rate, and calculate system losses such as effective irradiance loss, temperature loss, DC line loss, actual inverter efficiency, and AC line loss, and finally obtain the total system efficiency value.

[0098] (2) Configure the component-inverter string and matching design module, and analyze and judge the best matching and string scheme of the component-inverter in combination with the national standard (GB 50797-2012) requirements. The formula for the string scheme is:

[0099]

[0100] where, V dcmax is the maximum DC input voltage of the inverter; V OC is the open-circuit voltage of the PV module; V pm is the working voltage of the PV module; V mpppt max is the maximum MPPT voltage of the inverter; V mppt min is the minimum MPPT voltage of the inverter; t is the extreme low temperature under the working conditions of the PV module; t' is the extreme high temperature under the working conditions of the PV module; K v is the open-circuit voltage temperature coefficient of the PV module; K v’ is the working voltage temperature coefficient of the photovoltaic module; N is the number of series-connected battery modules (N is rounded down to an integer).

[0101] After the calculation of the string scheme result, the inverter over-matching coefficient verification, over-matching range verification, and inverter rated DC input voltage verification are carried out through the module to ensure the availability of the calculation result.

[0102] (3) Configure the photovoltaic equipment selection and verification module. By inputting the length of the photovoltaic cable, calculate the parameter selection and verification functions of the photovoltaic cable and circuit breaker equipment, which are used to calculate parameters such as the cross-section of the photovoltaic cable and the rated current of the circuit breaker and provide verification functions.

[0103] Furthermore, configure a photovoltaic data calculation unit, which can include:

[0104] According to the terrain modeling analysis result, perform horizon influence and power generation reduction calculation;

[0105] According to the modeling result of the electrical system wiring scheme, perform equipment parameter and conductor cross-section calculation;

[0106] According to the analysis results of the photovoltaic area layout method, installation method, and system efficiency, perform system efficiency and various reduction calculations;

[0107] Combine the installed capacity, radiation amount, terrain influence, electrical equipment parameters and wiring method, and system efficiency calculation results to calculate the hourly power generation of the household photovoltaic system year by year from the first year to the 25th year;

[0108] According to the power generation calculation results from the first year to the 25th year, perform energy conservation and emission reduction calculations, including the emissions of standard coal, carbon dust, carbon dioxide, sulfur dioxide, and nitrogen oxides;

[0109] The investment / income accounting module, by inputting the equipment unit price, two-way electricity price, and subsidy price, automatically calculates the total project investment and the annual rate of return for 25 years according to the installed capacity, power generation, and investment / income modeling results.

[0110] In summary, when the user uses the intelligent design platform for household photovoltaic power stations provided by the embodiments of the present application, the functions and data processing processes of each unit are as Figure 3As shown. Specifically, the user first creates a household photovoltaic power generation system (i.e., a household photovoltaic power station). If creating a new project, relevant data (such as the location coordinates of the location, the height of the poster, the diffuse reflection value, etc.) needs to be input. Then the meteorological resource analysis unit analyzes and fuses the corresponding data and exports the results to the power station simulation modeling unit. The simulation modeling unit conducts photovoltaic area simulation modeling and electrical system simulation modeling. The power station intelligent design unit adjusts the system parameters based on the simulation modeling results. Finally, the data calculation unit calculates various economic data, generates a household photovoltaic power station plan, and outputs the household photovoltaic power station plan in the form of reports, drawings, and charts.

[0111] By using this intelligent design platform for household photovoltaic power stations to design household photovoltaic power stations, the following beneficial effects can be brought:

[0112] Provide users with a complete and detailed optical resource, meteorological resource, and equipment database, facilitating simulation, analysis, and invocation by users during the modeling / design process.

[0113] Provide users with the function of designing and generating full-professional, full-cycle, and diversified solutions for household photovoltaic systems in one-stop, reducing the technical difficulty of household photovoltaic solution design, lightening the burden on technical personnel, and improving work efficiency and quality.

[0114] Realize the rationality control, accuracy control of the design scheme, and the rapid and efficient optimization and iteration of the scheme.

[0115] Next, refer to Figure 4 , which shows a schematic structural diagram of an electronic device (such as a terminal device or a server that executes the method shown in Figure 1 ) 400 suitable for implementing the embodiments of the present application. The electronic device in the embodiments of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Tablet Computers), PMPs (Portable Multimedia Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), wearable devices, etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 4 The electronic device shown is only an example and should not bring any restrictions to the functions and usage scopes of the embodiments of the present application.

[0116] The electronic device includes: a memory and a processor. The memory is used to store programs for executing the methods described in the above various method embodiments; the processor is configured to execute the programs stored in the memory. Among them, the processor here may be referred to as the processing device 401 described below, and the memory may include at least one of the read-only memory (ROM) 402, random access memory (RAM) 403, and storage device 408 described below, as shown specifically:

[0117] As shown Figure 4 in FIG. 1, the electronic device 400 may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 401, which may perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage device 408 into a random access memory (RAM) 403. In the RAM 403, various programs and data required for the operation of the electronic device 400 are also stored. The processing device 401, the ROM 402, and the RAM 403 are connected to each other through a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0118] Generally, the following devices may be connected to the I / O interface 405: an input device 406 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 407 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 408 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 409. The communication device 409 may allow the electronic device 400 to communicate with other devices wirelessly or wirelessly to exchange data. Although Figure 4 FIG. 1 shows an electronic device having various devices, it should be understood that it is not required to implement or include all the shown devices. Instead, more or fewer devices may be implemented or included.

[0119] Specifically, according to an embodiment of the present application, the process described above with reference to the flowchart may be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a non-transitory computer-readable medium, and the computer program includes program codes for performing the method shown in the flowchart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication device 409, or installed from the storage device 408, or installed from the ROM 402. When the computer program is executed by the processing device 401, the above functions defined in the method of the embodiment of the present application are executed.

[0120] It should be noted that the above-mentioned computer-readable storage medium in this application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this application, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. And in this application, the computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, and this computer-readable signal medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0121] In some embodiments, the client and the server can communicate using any currently known or future-developed network protocol such as HTTP (HyperText Transfer Protocol), and can be interconnected with digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include local area networks ("LAN"), wide area networks ("WAN"), the Internet (e.g., the Internet), and end-to-end networks (e.g., ad hoc end-to-end networks), as well as any currently known or future-developed network.

[0122] The above-mentioned computer-readable medium can be included in the above-mentioned electronic device; or it can exist separately without being assembled into the electronic device.

[0123] The above-mentioned computer-readable medium carries one or more programs, and when the above one or more programs are executed by the electronic device, it causes the electronic device to:

[0124] Obtain the meteorological / optical resource data of the location where the household photovoltaic power station to be designed is located; perform simulations based on the meteorological / optical resource data and the structure of the installation area of the household photovoltaic power station to be designed to obtain the corresponding component layout model and electrical wiring model, and perform simulation calculations based on the location where the household photovoltaic power station to be designed is located to obtain the terrain influence parameters; based on the component layout model, determine the inverter matching scheme, string scheme, and system efficiency analysis scheme, and based on the electrical wiring model, determine the corresponding equipment parameters and conductor parameters; based on the component layout model, the terrain influence parameters, the inverter matching scheme, the string scheme, the system efficiency analysis scheme, the equipment parameters, and the conductor parameters, obtain the power generation amount, energy conservation and emission reduction amount, and investment return rate of the household photovoltaic power station to be designed within a preset period; use the component layout model, the electrical wiring model, the inverter matching scheme, the string scheme, the equipment parameters, the conductor parameters, the power generation amount, and the energy conservation and emission reduction amount as the technical solutions, and use the investment return rate as the economic solution, and generate the corresponding household photovoltaic power station solution based on the technical solutions and the economic solutions.

[0125] Computer program code for performing the operations of the present application can be written in one or more programming languages or combinations thereof. The above-mentioned programming languages include, but are not limited to, object-oriented programming languages such as Java, Smalltalk, C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, by using an Internet service provider to connect through the Internet).

[0126] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a segment of a program, or a portion of code that contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks may occur in a different order than noted in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and combinations of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or by a combination of dedicated hardware and computer instructions.

[0127] The modules or units involved in the embodiments described in the present application can be implemented in software or in hardware. Among them, the name of the module or unit does not, in some cases, constitute a limitation on the unit itself. For example, the first position information acquisition module can also be described as "the module for acquiring the first position information".

[0128] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that can be used include: Field Programmable Gate Arrays (FPGA), Application Specific Integrated Circuits (ASIC), Application Specific Standard Products (ASSP), Systems on Chip (SOC), Complex Programmable Logic Devices (CPLD), and so on.

[0129] In the context of the present application, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM or Flash Memory), an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0130] It should be understood that although the steps in the flowcharts of the accompanying drawings are shown sequentially in the direction of the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction for the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowcharts of the accompanying drawings may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0131] The above are only some embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A method for generating a household photovoltaic power station solution, characterized in that, it includes: Obtain meteorological / light resource data of the location where the household photovoltaic power station to be designed is located; Based on the meteorological / light resource data and the structure of the installation area of the household photovoltaic power station to be designed, perform simulations to obtain corresponding component layout models and electrical wiring models, and perform simulation calculations based on the location where the household photovoltaic power station to be designed is located to obtain terrain influence parameters; Based on the component layout model, determine the inverter matching scheme, string scheme, and system efficiency analysis scheme. Based on the electrical wiring model, determine the corresponding equipment parameters and conductor parameters; Based on the component layout model, the terrain influence parameters, the inverter matching scheme, the string scheme, the system efficiency analysis scheme, the equipment parameters, and the conductor parameters, obtain the power generation amount, energy conservation and emission reduction amount, and investment return rate of the household photovoltaic power station to be designed within a preset period; Take the component layout model, the electrical wiring model, the inverter matching scheme, the string scheme, the equipment parameters, the conductor parameters, the power generation amount, and the energy conservation and emission reduction amount as technical solutions, take the investment return rate as an economic solution, and generate a corresponding household photovoltaic power station solution based on the technical solution and the economic solution.

2. The method according to claim 1, characterized in that, the obtaining meteorological / light resource data of the location where the household photovoltaic power station to be designed is located includes: Obtain the satellite meteorological / light resource data of the location, and obtain the real-time meteorological / light resource data reported by the user or the meteorological / light resource data with a long historical accumulation time series; Fuse the satellite meteorological / light resource data and the real-time meteorological / light resource data or the meteorological / light resource data with a long historical accumulation time series to obtain the meteorological / light resource data.

3. The method according to claim 1, characterized in that, the structure of the installation area includes the slope and orientation of the installation area; the performing simulations based on the meteorological / light resource data and the structure of the installation area of the household photovoltaic power station to be designed to obtain corresponding component layout models and electrical wiring models includes: Based on the slope and orientation of the installation area, divide the installation area into at least one unit sub-area and at least one unit area, and determine the installation inclination angle and azimuth angle of the photovoltaic modules in each unit sub-area to obtain the corresponding component layout model; Determine the wiring method from each photovoltaic module to the grid connection point to obtain the corresponding electrical wiring model.

4. The method according to claim 1, characterized in that, the performing simulation calculations based on the location where the household photovoltaic power station to be designed is located to obtain terrain influence parameters includes: Obtain the horizon information around the location where the household photovoltaic power station to be designed is located, and perform distant shadow occlusion calculations to obtain the terrain influence parameters.

5. The method according to claim 1, characterized in that, the determining the inverter matching scheme, string scheme, and system efficiency analysis scheme based on the component layout model includes: Combined with the preset national standard requirements, determine the inverter matching scheme and the string scheme; Based on the component layout model, obtain the dust occlusion loss, diffuse reflection coefficient, in-series / inter-series mismatch coefficient, and system unavailability rate. Then, based on the dust occlusion loss, the diffuse reflection coefficient, the in-series / inter-series mismatch coefficient, and the system unavailability rate, calculate the system loss coefficient through calculation, and further obtain the system efficiency analysis solution; Among them, the system loss coefficient includes: effective irradiance loss coefficient, temperature loss coefficient, DC line loss coefficient, actual inverter efficiency, and AC line loss.

6. A household photovoltaic power station intelligent design platform, characterized in that, it includes: A meteorological resource intelligent analysis unit, configured to obtain meteorological / optical resource data of the location where the household photovoltaic power station to be designed is located; A household photovoltaic power station simulation design unit, configured to perform simulation based on the meteorological / optical resource data and the structure of the installation area of the household photovoltaic power station to be designed, obtain the corresponding component layout model and electrical wiring model, and perform simulation calculation based on the location where the household photovoltaic power station to be designed is located to obtain terrain influence parameters; Based on the component layout model, determine the inverter matching solution, string solution, and system efficiency analysis solution. Based on the electrical wiring model, determine the corresponding equipment parameters and conductor parameters; A household photovoltaic data calculation unit, configured to obtain the power generation, energy conservation and emission reduction amount, and investment return rate of the household photovoltaic power station to be designed within a preset period based on the component layout model, the terrain influence parameters, the inverter matching solution, the string solution, the system efficiency analysis solution, the equipment parameters, and the conductor parameters; take the component layout model, the electrical wiring model, the inverter matching solution, the string solution, the equipment parameters, the conductor parameters, the power generation, and the energy conservation and emission reduction amount as technical solutions, take the investment return rate as an economic solution, and generate the corresponding household photovoltaic power station solution based on the technical solution and the economic solution.

7. The intelligent design platform according to claim 6, characterized in that, The meteorological resource intelligent analysis unit includes: a meteorological / optical resource database module and a meteorological / optical resource intelligent fusion analysis module: The meteorological / optical resource database module is configured to obtain satellite meteorological / optical resource data of the location, and obtain real-time meteorological / optical resource data reported by users or historical accumulated long-term meteorological / optical resource data; The meteorological / optical resource intelligent fusion analysis module is configured to fuse the satellite meteorological / optical resource data and the real-time meteorological / optical resource data or the historical accumulated long-term meteorological / optical resource data to obtain the meteorological / optical resource data.

8. The intelligent design platform according to claim 6, characterized in that, The structure of the installation area includes the slope and orientation of the installation area; The household photovoltaic power station simulation design unit includes: a building and photovoltaic installation area modeling module and a household photovoltaic electrical system modeling module, where: The building and PV installation area modeling module is used to divide the installation area into at least one unit sub-area and at least one unit area based on the slope and orientation of the installation area, and determine the installation inclination angle and azimuth angle of the PV modules in each unit sub-area to obtain the corresponding component layout model; The household PV electrical system modeling module is used to determine the wiring method from each PV module to the grid connection point to obtain the corresponding electrical wiring model.

9. The intelligent design platform according to claim 6, characterized in that, The household PV power station simulation design unit further includes a terrain influence modeling and analysis module, which is used for: Obtain the surrounding horizon information of the location where the household PV power station to be designed is located, and perform far shadow occlusion calculation to obtain the terrain influence parameters.

10. The intelligent design platform according to claim 6, characterized in that, The household PV power station simulation design unit further includes: a component-inverter string and matching design module and a PV system efficiency design module, wherein: The component-inverter string and matching design module is used to determine the inverter matching scheme and the string scheme in combination with the preset national standard requirements; The PV system efficiency design module is used to obtain the dust occlusion loss, diffuse reflection coefficient, in-series / inter-series mismatch coefficient, and system unavailability rate based on the component layout model, and based on the dust occlusion loss, the diffuse reflection coefficient, the in-series / inter-series mismatch coefficient, the system unavailability rate, and calculate to obtain the system loss coefficient, and then obtain the system efficiency analysis scheme; Wherein, the system loss coefficient includes: effective irradiance loss coefficient, temperature loss coefficient, DC line loss coefficient, actual inverter efficiency, and AC line loss.

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