Photovoltaic power generation simulation model construction method, device, electronic equipment and medium

Abstract

The embodiment of the present invention discloses a method, device, electronic device and medium for building a photovoltaic power generation simulation model. The method includes: based on the pre-stored arrangement information of photovoltaic components of the photovoltaic power generation system to be planned, determining at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned, and determining the first component information of the target inverter based on the at least one inverter combination to be selected; based on the first component information, determining the transformer screening conditions of the transformer in the photovoltaic power generation system to be planned, and determining the second component information of the target transformer according to the transformer screening conditions; based on the second component information, determining the third component information of the target cable, and building a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information. The technical solution of the embodiment of the present invention can improve the accuracy and efficiency of building the simulation model.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of photovoltaic power generation technology, and in particular to a method, device, electronic equipment and medium for building a photovoltaic power generation simulation model. Background Art

[0002] With the continuous growth of the capacity of distributed photovoltaic power generation systems and the expansion of the scale of photovoltaic business, the preliminary planning of distributed photovoltaic power generation systems has become particularly important.

[0003] In the prior art, a distributed simulation planning platform is usually pre-constructed, and the simulation model of the distributed photovoltaic power generation system is built by manually setting various component modules in the distributed simulation planning platform, so as to plan the distributed photovoltaic power generation system based on the constructed simulation model.

[0004] However, in the process of implementing the present invention, it was found that the prior art has at least the following technical problems: due to the increase in the scale of photovoltaic business of distributed photovoltaic power generation systems, manual settings of each component module are time-consuming and prone to errors, resulting in reduced efficiency in building simulation models. Summary of the invention

[0005] The embodiments of the present invention provide a method, device, electronic equipment and medium for building a photovoltaic power generation simulation model, so as to achieve the purpose of improving the accuracy and efficiency of building the simulation model.

[0006] According to one aspect of the present invention, a method for building a photovoltaic power generation simulation model is provided, comprising:

[0007] Based on pre-stored arrangement information of photovoltaic components of the photovoltaic power generation system to be planned, determining at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned, and determining first component information of the target inverter based on the at least one inverter combination to be selected;

[0008] Based on the first component information, determining a transformer screening condition of a transformer in the photovoltaic power generation system to be planned, and determining second component information of a target transformer according to the transformer screening condition;

[0009] Based on the second component information, the third component information of the target cable is determined, and based on the first component information, the second component information, the third component information and the arrangement information, a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned is built.

[0010] According to another aspect of the present invention, a device for building a photovoltaic power generation simulation model is provided, the device comprising:

[0011] A first component information determination module is used to determine at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on pre-stored arrangement information of photovoltaic components of the photovoltaic power generation system to be planned, and determine first component information of the target inverter based on the at least one inverter combination to be selected;

[0012] A second component information determination module, used to determine a transformer screening condition of a transformer in the photovoltaic power generation system to be planned based on the first component information, and determine second component information of a target transformer according to the transformer screening condition;

[0013] A model building module is used to determine the third component information of the target cable based on the second component information, and to build a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information.

[0014] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising:

[0015] at least one processor; and

[0016] a memory communicatively connected to the at least one processor; wherein,

[0017] The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for building a photovoltaic power generation simulation model described in any embodiment of the present invention.

[0018] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for building a photovoltaic power generation simulation model described in any embodiment of the present invention when executed.

[0019] The technical solution of the embodiment of the present invention is based on the pre-stored arrangement information of the photovoltaic components of the photovoltaic power generation system to be planned, determines at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned, and determines the first component information of the target inverter based on at least one inverter combination to be selected; and, based on the first component information, determines the transformer screening conditions of the transformer in the photovoltaic power generation system to be planned, and determines the second component information of the target transformer according to the transformer screening conditions, thereby determining the target transformer that meets the transformer screening conditions; finally, based on the second component information, determines the third component information of the target cable, and builds a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information. It can be seen that the technical solution of this embodiment only needs to determine the target inverter, the target transformer and the target cable after the pre-stored arrangement information, and does not need to be manually set for each component, which is conducive to improving the accuracy and efficiency of the simulation model.

[0020] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a flow chart of a method for building a photovoltaic power generation simulation model provided according to an embodiment of the present invention;

[0023] Figure 2 is a flow chart of another method for building a photovoltaic power generation simulation model provided according to an embodiment of the present invention;

[0024] Figure 3 It is a structural schematic diagram of a device for building a photovoltaic power generation simulation model provided according to an embodiment of the present invention;

[0025] Figure 4 It is a structural schematic diagram of an electronic device for implementing a method for building a photovoltaic power generation simulation model according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "etc." and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] It should be noted that the collection, collection, updating, analysis, processing, use, transmission, storage and other aspects of user personal information involved in the technical solution of this disclosure are in compliance with the provisions of relevant laws and regulations, are used for legitimate purposes, and do not violate public order and good morals. Necessary measures are taken for user personal information to prevent illegal access to user personal information data and maintain the security of user personal information and network security.

[0029] Figure 1 This is a flow chart of a method for building a photovoltaic power generation simulation model according to an embodiment of the present invention. This embodiment is applicable to the case of establishing a photovoltaic power generation simulation model for a planned photovoltaic power generation system. The method can be executed by a photovoltaic power generation simulation model building device, which can be implemented in the form of hardware and / or software.

[0030] like Figure 1 As shown, the method of this embodiment may specifically include:

[0031] S110, based on pre-stored arrangement information of photovoltaic components of the photovoltaic power generation system to be planned, determining at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned, and determining first component information of the target inverter based on the at least one inverter combination to be selected.

[0032] The arrangement information includes the arrangement quantity and series-parallel relationship of the photovoltaic modules, and may also include the deployment position of each photovoltaic module. The inverter combination to be selected may be an inverter combination used in the photovoltaic power generation system to be planned. Each inverter combination to be selected includes at least one inverter.

[0033] In a specific implementation, the arrangement information of the photovoltaic components of the photovoltaic power generation system to be planned can be obtained in advance, and the method of obtaining the arrangement information may include: in response to a trigger operation for adding a photovoltaic component module, obtaining the adding position and connection method of the added photovoltaic component module, and determining the arrangement information of the photovoltaic components of the photovoltaic power generation system to be planned based on the adding position and connection method.

[0034] It should be noted that adding a trigger operation can import the photovoltaic component modules on the pre-built distributed simulation planning platform to the drawings provided by the distributed simulation planning platform, ensuring that the connection relationship and deployment position between the imported photovoltaic component modules meet the actual requirements of the photovoltaic power generation system.

[0035] The overall technical architecture of the distributed simulation planning platform may include the standard layer, data layer, interface layer, functional layer and application layer. Among them, the standard layer is the basic standard specification followed by the platform construction, including the multi-domain unified modeling language specification, RESTful interface specification (Representational State Transfer), TCP / IP (Transmission Control Protocol / Internet Protocol), Websocket protocol specification and HTTPS (HyperText Transfer Protocol Secure). The data layer is the source of models, algorithms and data, mainly including engineering database, model library and algorithm library. The engineering database includes the environment database, equipment database and energy pricing database. The model library includes the basic model library, photovoltaic system model library, energy storage system model library, energy hosting system model library and topology model library. The algorithm library stores the photovoltaic system algorithm, energy storage system algorithm and energy hosting system algorithm. The interface layer includes the environment data interface, equipment data interface, energy pricing data interface and large language model interface. The functional layer provides software functional module support for the platform, including modeling and simulation module, engineering data management module, project management module, report generation module, result visualization module, background management module, photovoltaic function module, load analysis module, planning and design module, engineering budget module, financial evaluation sub-function module and data interface module. The application layer is the interactive application entrance between users and the platform. The main application scenarios include compliance analysis, planning and design, parameter optimization, engineering budget, financial evaluation, scheme comparison and report generation.

[0036] In this embodiment, at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned can be determined based on the pre-stored arrangement information. Optionally, based on the pre-stored arrangement information of the photovoltaic components of the photovoltaic power generation system to be planned, at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned is determined, including: determining the installed capacity of the photovoltaic power generation system to be planned based on the arrangement information; determining at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on the installed capacity, pre-set parameters of the inverter to be selected and preset inverter screening conditions.

[0037] It should be noted that the user can input in advance the inverter parameters of the inverter that matches the photovoltaic power generation system to be planned as the inverter parameters to be selected. The inverter parameters to be selected include parameters such as the rated power of the inverter and the inverter model.

[0038] In a specific implementation, the installed capacity of the photovoltaic power generation system to be planned is determined by the arrangement information and the peak power of the photovoltaic modules. Optionally, the arrangement information includes the number of modules arranged and the series-parallel relationship of the photovoltaic modules; based on the arrangement information, the installed capacity of the photovoltaic power generation system to be planned is determined, including: based on the number of modules arranged and the series-parallel relationship, determining the number of modules in series and the number of groups in series and parallel corresponding to the photovoltaic power generation system to be planned; based on the number of modules in series, the number of groups in series and parallel and the preset peak power of the photovoltaic modules, determining the installed capacity of the photovoltaic power generation system to be planned.

[0039] It should be noted that the number of photovoltaic power generation components in series in the planned power generation system, i.e., the number of components in series, can be determined by the number of component arrangements and the series-parallel relationship. Each group of photovoltaic components in series is called a group string, and the number of groups of strings in parallel is called the group string parallel number. In this embodiment, the number of components in series and the number of groups of strings in parallel can be determined based on the number of component arrangements and the series-parallel relationship.

[0040] In a specific implementation, based on the number of components connected in series, the number of strings connected in parallel and the pre-set peak power of photovoltaic components, the method for determining the installed capacity of the photovoltaic power generation system to be planned includes: determining the product of the number of components connected in series, the number of strings connected in parallel and the peak power of photovoltaic components, and using the product as the installed capacity of the photovoltaic power generation system to be planned.

[0041] This embodiment provides a method for determining the installed capacity of a photovoltaic power generation system to be planned, so that the installed capacity can be determined quickly and effectively.

[0042] In this embodiment, based on the installed capacity, the preset parameters of the inverters to be selected and the preset inverter screening conditions, the specific implementation method of determining at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned includes: based on the parameters of the inverters to be selected, determining at least one first inverter combination that meets the preset inverter screening conditions, and determining at least one first inverter combination as the inverter combination to be selected. Alternatively, in order to be more in line with the actual working conditions of the photovoltaic power generation system to be planned, the method of determining the inverter combination to be selected can also be: based on the parameters of the inverters to be selected, determining at least one first inverter combination that meets the preset inverter screening conditions; determining the site capacity ratio corresponding to each first inverter combination, and determining the first inverter combination whose site capacity ratio meets the preset capacity ratio condition as the second inverter combination; based on the second inverter combination, determining at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned.

[0043] Specifically, the preset inverter screening condition includes that the parallel power of the inverter is greater than the installed capacity. In order to be able to explain the process of determining the first inverter combination in detail, the inverters pre-set for the photovoltaic power generation system to be planned include inverter A and inverter B as an example. Exemplarily, in the case where only inverter A is set in the photovoltaic power generation system to be planned, based on the parameters and installed capacity of the selected inverters of inverter A, it is determined that when the parallel power of inverter A is greater than the installed capacity, a maximum of inverters A can be set. In the case where only inverter B is set in the photovoltaic power generation system to be planned, based on the parameters and installed capacity of the selected inverters of inverter B, it is determined that when the parallel power of inverter B is greater than the installed capacity, b maximum of inverters B can be set. By enumeration, a inverter A and b inverter B are arranged and combined, and the inverters in each obtained combination form a first inverter combination.

[0044] Furthermore, in order to make each inverter combination meet the construction requirements of the photovoltaic power generation system to be planned, the site capacity matching ratio corresponding to each first inverter combination is determined, and the first inverter combination whose site capacity matching ratio meets the preset capacity matching ratio condition is determined as the second inverter combination; based on the second inverter combination, at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned is determined. The preset capacity matching ratio condition includes that the difference between the site capacity matching ratio and the preset site capacity matching ratio is less than the preset difference threshold.

[0045] In practical applications, the first inverter combination whose difference between the site capacity ratio and the preset site capacity ratio is less than the preset difference threshold can be determined as the second inverter combination. All second inverter combinations can be determined as inverter combinations to be selected. Alternatively, a preset number of second inverter combinations whose difference between the site capacity ratio and the preset site capacity ratio is the smallest can also be determined as inverter combinations to be selected. Those skilled in the art can determine the specific value of the preset site capacity ratio according to the actual application. For example, the preset site capacity ratio can be 1.2.

[0046] This embodiment selects at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on the actual application situation of the photovoltaic power generation system to be planned, so that the determined inverter combination to be selected can be accurately applied to the power generation system to be planned.

[0047] In this embodiment, a candidate inverter combination can be arbitrarily selected as the target inverter combination for modeling the planned photovoltaic power generation system, each inverter in the target inverter combination is used as the target inverter, and the first component information of the target inverter includes the input voltage range, maximum DC input power, maximum DC input current, output voltage, maximum active output power and output frequency of the target inverter.

[0048] In order to improve the flexibility of determining the target inverter combination, the combination information of each determined inverter combination to be selected can also be displayed for user viewing; in response to the selection trigger operation of the inverter combination to be selected, the selected inverter combination to be selected is determined as the target inverter combination.

[0049] S120. Determine a transformer screening condition of a transformer in the photovoltaic power generation system to be planned based on the first component information, and determine second component information of a target transformer according to the transformer screening condition.

[0050] In a photovoltaic power generation system, the transformer and the inverter are important components that are interrelated and influence each other. The setting of the transformer needs to be affected by the inverter. Therefore, based on the first component information, the transformer screening condition can be determined to screen out the target transformer based on the transformer screening condition.

[0051] Optionally, based on the first component information, the transformer screening conditions of the transformer in the photovoltaic power generation system to be planned are determined, including: determining the recommended apparent power of the transformer based on the maximum active output power of the target inverter, the preset transformer power factor and the preset margin coefficient; and determining the absolute value of the power difference between the rated power of the transformer and the recommended apparent power of the transformer to be less than a preset threshold as the transformer screening condition.

[0052] In this embodiment, the recommended apparent power of the transformer is determined by: determining a first ratio between the maximum active output power and the transformer power factor, determining a second ratio between the first ratio and a preset margin coefficient, and determining the second ratio as the recommended apparent power of the transformer. The preset margin coefficient may be in the range of (0.8, 0.9).

[0053] In order to ensure that the photovoltaic power generation system built by the target transformer can work normally, the absolute value of the power difference between the rated power of the transformer and the recommended apparent power of the transformer can be less than a preset threshold value, which can be set as a transformer screening condition, so that among the various transformers available for the pre-set photovoltaic power generation system to be planned, the transformer with the absolute value of the power difference between the rated power and the recommended apparent power of the transformer less than the preset threshold value is screened out as the target transformer. In addition, at least one of the operating frequency, rated voltage, rated current, rated capacity and rated power of the target transformer is determined as the second component information.

[0054] This embodiment provides a method for screening target transformers, which can quickly and accurately screen out transformers that meet the actual application requirements of the photovoltaic power generation system to be planned.

[0055] In order to better meet the actual needs of users, when the number of determined target transformers is greater than the preset number, the second component information of each target transformer can be displayed. In response to the selection operation of the second component information, the selected second component information will be retained and other second component information will be deleted, thereby better improving the user experience.

[0056] S130. Based on the second component information, determine the third component information of the target cable, and build a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information.

[0057] The third component information includes information such as the model and identification of the target cable, etc. The second component information includes the rated current of the target transformer.

[0058] Optionally, based on the second component information, the third component information of the target cable is determined, including: for each pre-set alternative cable, based on the cable attribute information of the alternative cable, determining the allowable voltage drop calculated current of the alternative cable; based on the rated current of the target transformer, determining the loop working calculated current of at least one loop in the photovoltaic power generation system to be planned; for each loop, the cable attribute information of the alternative cable whose allowable voltage drop calculated current is less than the loop working calculated current of the loop is determined as the third component information.

[0059] The candidate cables are pre-stored cables used in the photovoltaic power generation system to be planned. The cable attribute information includes at least one of the cable material type, the cable calculated cross-sectional area and the length.

[0060] In this embodiment, the formula for determining the allowable voltage and current of the candidate cable is as follows:

[0061]

[0062] Among them, I ca To calculate the current to allow voltage, S cac Calculate the cross-sectional area of ​​the cable, ΔU p The allowable voltage drop of the circuit in the photovoltaic power generation system to be planned can be a value corresponding to 3% to 5% of the rated voltage. ρ is the resistivity, and L is the preset length of the required cable. It should be noted that cables of different materials have different resistivity. For example, the resistivity of copper conductor cables is 0.01724 ohms·mm2 / m, and the resistivity of aluminum conductor cables is 0.02826 ohms·mm2 / m.

[0063] In this embodiment, the rated current of the target transformer can be determined as the loop working calculated current of the loop where the target transformer is located. For each loop, the cable attribute information of the candidate cable that allows the voltage drop calculated current to be less than the loop working calculated current of the loop is determined as the third component information.

[0064] In a specific implementation, at least one of the first component information, the second component information, and the third component information can be displayed on the interface so that the user can understand the information of the components currently determined to be available for modeling. In order to improve the accuracy of modeling, in response to an adjustment trigger operation on at least one of the first component information, the second component information, and the third component information, at least one of the first component information, the second component information, and the third component information can be updated. It should be noted that the adjustment trigger operation includes at least one of the deletion, addition, and replacement operations. By adjusting the trigger operation, at least one of the first component information, the second component information, and the third component information is updated, which is equivalent to adjusting the transformer, inverter combination, and cable selected during modeling, so that the photovoltaic power generation simulation model obtained by modeling meets the actual application situation while being more in line with user needs.

[0065] Furthermore, an inverter module corresponding to the first component information, a transformer module corresponding to the second component information, and a cable module corresponding to the third component information are selected in the distributed simulation planning platform; and, based on the arrangement information, a photovoltaic module corresponding to the photovoltaic power generation system to be planned is selected, and the inverter module, transformer module, cable module and photovoltaic module are connected according to the connection method of each component reflected in the arrangement information to build a photovoltaic power generation simulation model.

[0066] The technical solution of the embodiment of the present invention is based on the pre-stored arrangement information of the photovoltaic components of the photovoltaic power generation system to be planned, determines at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned, and determines the first component information of the target inverter based on at least one inverter combination to be selected; and, based on the first component information, determines the transformer screening conditions of the transformer in the photovoltaic power generation system to be planned, and determines the second component information of the target transformer according to the transformer screening conditions, thereby determining the target transformer that meets the transformer screening conditions; finally, based on the second component information, determines the third component information of the target cable, and builds a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information. It can be seen that the technical solution of this embodiment only needs to determine the target inverter, the target transformer and the target cable after the pre-stored arrangement information, and does not need to be manually set for each component, which is conducive to improving the accuracy and efficiency of the simulation model.

[0067] Figure 2 is a flowchart of another method for building a photovoltaic power generation simulation model according to an embodiment of the present invention. Based on the above embodiment, this embodiment further includes: generating a planning report corresponding to the photovoltaic power generation system to be planned based on the photovoltaic power generation simulation model, and sending the planning report to the work terminal. The explanations of the terms that are the same or corresponding to the above embodiments are not repeated here. Figure 2 As shown, the method includes:

[0068] S210. Determine at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on pre-stored arrangement information of photovoltaic components of the photovoltaic power generation system to be planned, and determine first component information of the target inverter based on the at least one inverter combination to be selected.

[0069] S220. Determine a transformer screening condition of a transformer in the photovoltaic power generation system to be planned based on the first component information, and determine second component information of a target transformer according to the transformer screening condition.

[0070] S230. Based on the second component information, determine the third component information of the target cable, and build a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information.

[0071] S240: Generate a planning report corresponding to the photovoltaic power generation system to be planned based on the photovoltaic power generation simulation model, and send the planning report to the work terminal.

[0072] Among them, the planning report includes the power generation, input value attribute value and acquisition value attribute value corresponding to the photovoltaic power generation simulation model.

[0073] In a specific implementation, the power generation, input value attribute value and acquisition value attribute value of the photovoltaic power generation system to be planned can be predicted based on the photovoltaic power generation simulation model. A planning report is generated based on the power generation, input value attribute value and acquisition value attribute value. Specifically, the power generation of the photovoltaic power generation system to be planned can be determined based on the installed capacity, loss and local care of the photovoltaic power generation system to be planned. Power generation R P The formula for determining is as follows:

[0074]

[0075] Among them, H A is the total solar radiation on the horizontal surface, K is the total efficiency coefficient of the photovoltaic power generation system to be planned; E S is the irradiance under preset standard conditions, and P represents the installed capacity of the photovoltaic power generation system to be planned.

[0076] In a specific implementation, in response to a trigger operation on a cost calculation control, a cost input attribute box corresponding to each investment project is displayed; in response to an input trigger operation on the cost input attribute box, a single value attribute value corresponding to each investment project is obtained, and the investment value attribute value of the photovoltaic power generation system to be planned is determined based on the single value attribute value. Exemplarily, the investment projects include installation engineering projects and construction engineering projects. The single value attribute values ​​of the installation engineering projects include equipment fees and installation fees; the construction engineering projects include power plant projects, step-up substation projects, housing construction projects, and transportation projects. Furthermore, the investment projects may also include construction land investment, construction management, production preparation, and survey and design.

[0077] In the specific implementation, the acquisition value attribute value of the photovoltaic power generation system to be planned is determined based on the determined power generation and the preset electricity price. In order to enable users to clearly and conveniently understand the benefits of the photovoltaic power generation system to be planned after planning, the planning report can be sent to the work terminal for users to view. The planning report can also provide a value-added tax table, a profit and loss statement, a cash flow statement, an asset table, an economic added value calculation table and a financial indicator summary table, so that users can intuitively understand the benefits of the photovoltaic power generation system to be planned.

[0078] Figure 3 1 is a schematic diagram of the structure of a photovoltaic power generation simulation model construction device provided in accordance with an embodiment of the present invention, and the device is used to execute the photovoltaic power generation simulation model construction method provided in any of the above embodiments. The device and the photovoltaic power generation simulation model construction method of the above embodiments belong to the same inventive concept, and the details not fully described in the embodiments of the photovoltaic power generation simulation model construction device can refer to the embodiments of the photovoltaic power generation simulation model construction method. Figure 3 As shown, the device comprises:

[0079] A first component information determination module 10 is used to determine at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on pre-stored arrangement information of photovoltaic components of the photovoltaic power generation system to be planned, and determine first component information of the target inverter based on the at least one inverter combination to be selected;

[0080] The second component information determination module 11 is used to determine the transformer screening conditions of the transformers in the photovoltaic power generation system to be planned based on the first component information, and determine the second component information of the target transformer according to the transformer screening conditions;

[0081] The model building module 12 is used to determine the third component information of the target cable based on the second component information, and to build a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information.

[0082] Based on any optional technical solution in the embodiment of the present invention, optionally, the first component information determination module 10 includes:

[0083] An installed capacity determination unit, used to determine the installed capacity of the photovoltaic power generation system to be planned based on the arrangement information;

[0084] The inverter combination determination unit is used to determine at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on the installed capacity, the preset inverter parameters to be selected and the preset inverter screening conditions.

[0085] Based on any optional technical solution in the embodiment of the present invention, optionally, the arrangement information includes the arrangement quantity and series-parallel relationship of the photovoltaic modules;

[0086] The installed capacity determination unit includes:

[0087] The installed capacity determination subunit is used to determine the number of components in series and the number of string-parallel groups corresponding to the photovoltaic power generation system to be planned based on the number of components arranged and the series-parallel relationship; based on the number of components in series, the number of string-parallel groups and the pre-set peak power of the photovoltaic components, determine the installed capacity of the photovoltaic power generation system to be planned.

[0088] On the basis of any optional technical solution in the embodiments of the present invention, optionally, the preset inverter screening condition includes that the parallel power of the inverter is greater than the installed capacity;

[0089] The unit for determining the inverter combination to be selected includes:

[0090] A first inverter combination determination subunit, configured to determine at least one first inverter combination that meets a preset inverter screening condition based on parameters of the inverters to be selected;

[0091] A second inverter combination determination subunit, used to determine the site capacity matching ratio corresponding to each first inverter combination, and determine the first inverter combination whose site capacity matching ratio meets the preset capacity matching ratio condition as the second inverter combination;

[0092] The inverter combination to be selected subunit is used to determine at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on the second inverter combination.

[0093] Based on any optional technical solution in the embodiment of the present invention, optionally, the second component information determination module 11 includes:

[0094] A transformer recommended apparent power determination unit, used to determine the transformer recommended apparent power based on the maximum active output power of the target inverter, a preset transformer power factor and a preset margin coefficient;

[0095] The transformer screening condition determination unit is used to determine, when the absolute value of the power difference between the rated power of the transformer and the recommended apparent power of the transformer is less than a preset threshold, as a transformer screening condition.

[0096] Based on any optional technical solution in the embodiment of the present invention, optionally, the second component information includes a rated current of the target transformer; and the model building module 12 includes:

[0097] an allowable voltage drop calculation current determination unit, configured to determine, for each preset candidate cable, an allowable voltage drop calculation current of the candidate cable based on the cable attribute information of the candidate cable;

[0098] A loop working calculated current determination unit, used to determine the loop working calculated current of at least one loop in the photovoltaic power generation system to be planned based on the rated current of the target transformer;

[0099] The third component information determining unit is configured to determine, for each loop, cable attribute information of a candidate cable that allows a voltage drop calculated current to be smaller than a loop working calculated current of the loop as third component information.

[0100] Based on any optional technical solution in the embodiments of the present invention, optionally, the method further includes:

[0101] The planning includes a generation module, which is used to generate a planning report corresponding to the photovoltaic power generation system to be planned based on the photovoltaic power generation simulation model after building a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned, and send the planning report to the work terminal; wherein the planning report includes the power generation, input value attribute value and acquisition value attribute value corresponding to the photovoltaic power generation simulation model.

[0102] The technical solution of the embodiment of the present invention is based on the pre-stored arrangement information of the photovoltaic components of the photovoltaic power generation system to be planned, determines at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned, and determines the first component information of the target inverter based on at least one inverter combination to be selected; and, based on the first component information, determines the transformer screening conditions of the transformer in the photovoltaic power generation system to be planned, and determines the second component information of the target transformer according to the transformer screening conditions, thereby determining the target transformer that meets the transformer screening conditions; finally, based on the second component information, determines the third component information of the target cable, and builds a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information. It can be seen that the technical solution of this embodiment only needs to determine the target inverter, the target transformer and the target cable after the pre-stored arrangement information, and does not need to be manually set for each component, which is conducive to improving the accuracy and efficiency of the simulation model.

[0103] It is worth noting that in the embodiment of the above-mentioned photovoltaic power generation simulation model building device, the various units and modules included are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0104] Figure 4It is a schematic diagram of the structure of an electronic device for implementing the method for building a photovoltaic power generation simulation model of an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0105] like Figure 4 As shown, the electronic device 20 includes at least one processor 21, and a memory connected to the at least one processor 21, such as a read-only memory (ROM) 22, a random access memory (RAM) 23, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 21 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 22 or the computer program loaded from the storage unit 28 to the random access memory (RAM) 23. In RAM23, various programs and data required for the operation of the electronic device 20 can also be stored. The processor 21, ROM22 and RAM23 are connected to each other through a bus 24. An input / output (I / O) interface 25 is also connected to the bus 24.

[0106] A number of components in the electronic device 20 are connected to the I / O interface 25, including: an input unit 26, such as a keyboard, a mouse, etc.; an output unit 27, such as various types of displays, speakers, etc.; a storage unit 28, such as a disk, an optical disk, etc.; and a communication unit 29, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 29 allows the electronic device 20 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0107] The processor 21 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 21 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 21 executes the various methods and processes described above, such as the method for building a photovoltaic power generation simulation model.

[0108] In some embodiments, the method for building a photovoltaic power generation simulation model can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 28. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 20 via ROM22 and / or communication unit 29. When the computer program is loaded into RAM23 and executed by the processor 21, one or more steps of the method for building a photovoltaic power generation simulation model described above can be performed. Alternatively, in other embodiments, the processor 21 can be configured to execute the method for building a photovoltaic power generation simulation model in any other appropriate manner (for example, by means of firmware).

[0109] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0110] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0111] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, 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 foregoing.

[0112] To provide interaction with a user, the systems and techniques described herein may be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0113] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0114] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0115] This embodiment also provides a computer program product, including a computer program, which, when executed by a processor, implements a method for building a photovoltaic power generation simulation model as provided in any embodiment of the present application.

[0116] In the process of implementation, the computer program product can be written in one or more programming languages ​​or a combination thereof to perform the computer program code of the present invention, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate 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, using an Internet service provider to connect through the Internet).

[0117] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0118] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for building a photovoltaic power generation simulation model, characterized in that: include: Based on pre-stored arrangement information of photovoltaic components of the photovoltaic power generation system to be planned, determining at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned, and determining first component information of the target inverter based on the at least one inverter combination to be selected; Based on the first component information, determining a transformer screening condition of a transformer in the photovoltaic power generation system to be planned, and determining second component information of a target transformer according to the transformer screening condition; Based on the second component information, the third component information of the target cable is determined, and based on the first component information, the second component information, the third component information and the arrangement information, a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned is built.

2. The method according to claim 1, characterized in that The determining, based on the pre-stored arrangement information of the photovoltaic components of the photovoltaic power generation system to be planned, at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned comprises: Based on the arrangement information, determining the installed capacity of the photovoltaic power generation system to be planned; At least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned is determined based on the installed capacity, preset parameters of the inverter to be selected and preset inverter screening conditions.

3. The method according to claim 2, characterized in that The arrangement information includes the arrangement quantity and series-parallel relationship of the photovoltaic modules; The step of determining the installed capacity of the photovoltaic power generation system to be planned based on the arrangement information includes: Based on the number of component arrangements and the series-parallel relationship, determining the number of components in series and the number of groups in series-parallel corresponding to the photovoltaic power generation system to be planned; The installed capacity of the photovoltaic power generation system to be planned is determined based on the number of components connected in series, the number of strings connected in parallel and the preset peak power of the photovoltaic components.

4. The method according to claim 2, characterized in that: The preset inverter screening condition includes that the inverter parallel power is greater than the installed capacity; The step of determining at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on the installed capacity, the preset inverter parameters to be selected and the preset inverter screening conditions comprises: Based on the parameters of the inverters to be selected, determining at least one first inverter combination that meets the preset inverter screening condition; Determine the site capacity matching ratio corresponding to each of the first inverter combinations, and determine the first inverter combination whose site capacity matching ratio meets the preset capacity matching ratio condition as the second inverter combination; Based on the second inverter combination, at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned is determined.

5. The method according to claim 1, characterized in that The step of determining a transformer screening condition of a transformer in the photovoltaic power generation system to be planned based on the first component information includes: Determining a recommended apparent power of the transformer based on the maximum active output power of the target inverter, a preset transformer power factor and a preset margin coefficient; The absolute value of the power difference between the rated power of the transformer and the recommended apparent power of the transformer is less than a preset threshold value, which is determined as the transformer screening condition.

6. The method according to claim 1, characterized in that The second component information includes the rated current of the target transformer; and determining the third component information of the target cable based on the second component information includes: For each preset candidate cable, based on the cable attribute information of the candidate cable, determining the allowable voltage drop calculation current of the candidate cable; Determining a loop operating calculated current of at least one loop in the photovoltaic power generation system to be planned based on the rated current of the target transformer; For each loop, the cable attribute information of the candidate cable whose allowable voltage drop calculated current is smaller than the loop working calculated current of the loop is determined as the third component information.

7. The method according to claim 1, characterized in that After building the photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned, the method further includes: Based on the photovoltaic power generation simulation model, a planning report corresponding to the photovoltaic power generation system to be planned is generated, and the planning report is sent to a work terminal; wherein the planning report includes the power generation, input value attribute value and acquisition value attribute value corresponding to the photovoltaic power generation simulation model.

8. A device for building a photovoltaic power generation simulation model, characterized in that: include: A first component information determination module is used to determine at least one inverter combination to be selected corresponding to the photovoltaic power generation system to be planned based on pre-stored arrangement information of photovoltaic components of the photovoltaic power generation system to be planned, and determine first component information of the target inverter based on the at least one inverter combination to be selected; A second component information determination module, used to determine a transformer screening condition of a transformer in the photovoltaic power generation system to be planned based on the first component information, and determine second component information of a target transformer according to the transformer screening condition; A model building module is used to determine the third component information of the target cable based on the second component information, and to build a photovoltaic power generation simulation model corresponding to the photovoltaic power generation system to be planned based on the first component information, the second component information, the third component information and the arrangement information.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for building a photovoltaic power generation simulation model according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for building a photovoltaic power generation simulation model according to any one of claims 1 to 7 when executed.

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