A Construction Method, Recording Medium and System for the Cost Model of a Photovoltaic Power Generation Project

Abstract

The present invention belongs to the technical field of photovoltaic power generation, and particularly relates to a method for constructing a cost model of a photovoltaic power generation project. By stratifying the quotations and introducing meta-modules, the calculation amount of generating the cost is greatly reduced. By reserving project characteristics and design parameters as input items, the depth of engineering application is reached, and the credibility of the output data is improved. Combined with the real-time update of the unit price library information, the accuracy and timeliness of the generation of the cost result are improved, which is particularly applicable to engineering practices under the background of the continuous development and change of photovoltaic technologies. The present invention also provides a non-transitory readable recording medium storing the program of the method and a system including the medium. The program can be called by a processing circuit to execute the above method.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic power generation, and discloses a construction method, a recording medium and a system for a photovoltaic power generation project cost model. Background Art

[0002] Compared with traditional power projects such as hydropower and thermal power with large investment scales and long construction periods, individual new energy projects such as wind power and photovoltaic power have smaller investment scales and shorter construction periods, and similar projects have strong commonalities. The construction rhythm of new energy projects such as photovoltaic power has been greatly accelerated. As an important link in the construction of photovoltaic power generation projects, the determination of the cost of photovoltaic power generation projects has become a powerful guarantee for the high-quality implementation and cost control of projects. Efficiently and accurately obtaining the cost of photovoltaic power generation projects is of great significance for controlling the investment of photovoltaic power generation projects, evaluating investment returns, and promoting the standardized construction of photovoltaic power generation projects.

[0003] By analyzing the research and application of engineering cost models at home and abroad, it can be seen that: in the academic community, it tends to use data mining technology, linear regression or reasoning technology, and artificial intelligence technology to innovate theoretically and methodologically to improve the prediction accuracy of new project cost indicators; at the enterprise application level, foreign countries rely on the continuous improvement of databases and the timely update and sharing of cost information to improve the prediction accuracy of new project cost indicators, while domestic countries focus on combining the project practice of the previous year to guide the compilation of new project cost indicators by releasing typical project or sub-module cost indicators that can be freely combined.

[0004] The following problems exist in practical applications:

[0005] 1. The academic community can make relatively clear explanations theoretically for the selection of engineering characteristic parameters and data reasoning, but there are differences from design practice and it cannot reach the depth and credibility of engineering applications; there is no input port reserved for flexibility according to actual situations, and the flexibility of the model is insufficient.

[0006] 2. Using the latest reasoning and prediction technologies such as neural networks and artificial intelligence technologies, although the prediction accuracy of new project cost indicators has been improved compared with traditional methods, the prediction process is unknown and it is difficult to trace back after problems occur. When some entries need to be adjusted or verified manually, it cannot be achieved;

[0007] 3. In enterprise practice, the method of releasing typical project or sub-module cost indicators can give certain guidance to the initial investment stage of projects, but the timeliness and accuracy cannot meet the application requirements in stages such as specific project investment evaluation and bidding quotation. Summary of the Invention

[0008] In view of the above problems, the present invention provides a construction method for a photovoltaic power generation project cost model, and the specific scheme includes the following steps:

[0009] S1. According to the spatial distribution characteristics and design and construction procedures of the photovoltaic power generation project, the photovoltaic power generation project is gradually decomposed into three levels: sub-projects, modules, and meta-modules;

[0010] Each type of sub-project is divided into different equipment and installation engineering modules and building engineering modules. Each module is further decomposed into meta-modules. The meta-module is the smallest cost unit that cannot be further divided, including equipment models, construction and installation project items, and other cost items; determine the meta-modules that each module needs to include, as well as the modules and meta-modules that each sub-project needs to include;

[0011] S2. Determine the project characteristics and design parameters that affect equipment models and project quantity changes in each sub-project, module, and meta-module of the photovoltaic power generation project;

[0012] S3. Establish an accounting template for the project quantity or equipment selection of each item in the meta-module and a unit price library for the corresponding items according to historical data and market conditions;

[0013] S4. Use the project characteristics and design parameters as input items, substitute the prices corresponding to each item in the unit price library, and summarize the project quantity and cost of a single meta-module, module, and sub-project from bottom to top;

[0014] S5. Store the project quantity and cost of the sub-project and / or module as intermediate values, set up a total project cost summarization mechanism, and complete the construction of the cost model for the photovoltaic power generation project; the total project cost summarization mechanism is: when the input project characteristics and design parameters are exactly the same as the corresponding items at the sub-project or module level, directly call the intermediate value for summarization, otherwise summarize from the cost of the meta-module from bottom to top.

[0015] Preferably, the photovoltaic power generation project is decomposed into 5 sub-projects, namely photovoltaic power generation area, booster station / switching station, collector line project, transportation project, and others.

[0016] Preferably, the project characteristics include the type, location, area of the photovoltaic power generation area, degree of plot dispersion, installed capacity information of the photovoltaic power generation project; the design parameters include component model, bracket type, inverter model, cable material, foundation form, booster station voltage level.

[0017] Preferably, the equipment models, construction and installation project items, and other cost items need to be uniquely coded.

[0018] This avoids the situation where when artificial intelligence participates in the cost model, in unsupervised learning, two contents with similar names but different essences are mistakenly generalized into one.

[0019] Another aspect of the present invention is to provide a non-transitory readable recording medium for storing one or more programs including a plurality of instructions, which, when executed, will cause a processing circuit to execute the above-mentioned method for constructing a cost model of a photovoltaic power generation project.

[0020] Another aspect of the present invention is to provide a system for constructing a cost model of a photovoltaic power generation project, including a processing circuit and a memory electrically coupled thereto. The memory is configured to store at least one program, the program includes a plurality of instructions, and when the processing circuit runs the program, it can execute the above-mentioned method for constructing a cost model of a photovoltaic power generation project.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The method for constructing a cost model of a photovoltaic power generation project provided by the present invention reserves project characteristics and design parameters as input items in the model, which is consistent with design practice and reaches the depth of engineering applications. The output data has a high credibility; the hierarchical configuration enables only the different parts to be calculated when the projects have little difference, thereby improving the operation speed of the model and quickly obtaining the cost.

[0023] The method adopted by the present invention can adjust the characteristic parameters, calculation formulas and templates according to the difference between the generated result and the actual project, realize the optimization and upgrade of the system, and has the functions of traceability and dynamic adjustment.

[0024] The combination of characteristic parameters, calculation formulas and the engineering quantity accounting template can achieve a high degree of matching of different photovoltaic power generation projects. Combined with the real-time update of the unit price library information, it can timely reflect the price changes, and improve the accuracy and timeliness of the generation of the cost results of photovoltaic power generation projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the automatic generation process of the cost of a photovoltaic power generation project in an embodiment of the present invention;

[0026] Figure 2 It is a schematic diagram of the module division of a photovoltaic power generation project in an embodiment of the present invention;

[0027] Figure 3 It is a flowchart of the engineering quantity generation program in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention. The described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] An embodiment of the method for constructing a cost model of a photovoltaic power generation project provided by the present invention is as follows:

[0030] Step 1: Overall consider the engineering space distribution characteristics of the photovoltaic power generation project and engineering design and construction experience, and divide the model into sub-projects, modules, and meta-modules according to levels;

[0031] Step 2: Determine the main project characteristics and design parameters that affect the equipment model and project quantity change in the photovoltaic power generation project, each sub-project, and module;

[0032] Step 3: According to the project characteristics and design parameters, determine the equipment, construction and installation engineering projects to be included in the meta-module and the calculation formulas for their corresponding project quantities;

[0033] Step 4: Establish a typical project quantity template library corresponding to each meta-module;

[0034] Step 5: Establish a library of equipment models, construction and installation engineering projects, other expense items, and their price libraries (i.e., the unit price library in the invention content);

[0035] Step 6: According to the selection of project characteristics and design parameters, store the project quantity and cost of the sub-project and / or module as intermediate values, set a total project cost summary mechanism, and complete the construction of the cost model of the photovoltaic power generation project; the total project cost summary mechanism is: when the input project characteristics and design parameters are exactly the same as the corresponding projects at the sub-project or module level, directly call the intermediate value for summary, otherwise summarize from the cost of the meta-module from bottom to top.

[0036] In the above technical solution, in Step 1, first, according to the construction characteristics of the photovoltaic power generation project, considering the characteristics, spatial locations, and the practice habits of sub-projects, section bidding in the construction project, equipment procurement and installation, land acquisition and lease, construction management fees, and the photovoltaic power generation area, booster station, collector line project, and transportation project, etc., the photovoltaic power generation project can be divided into 5 sub-projects, namely, photovoltaic power generation area, booster station / switch station, collector line project, transportation project, and other projects; furthermore, according to the differences between equipment and installation engineering and construction engineering, each sub-project can be further divided into different equipment and installation engineering modules and construction engineering modules; finally, according to the relevance between equipment or construction projects, it can be further divided into the final meta-module, that is, a set of equipment and installation engineering or construction projects with close association.

[0037] For the photovoltaic project, the division results of its sub-projects, modules, and meta-modules are as Figure 2 shown.

[0038] In the above technical solution, in Step 2, the project characteristics and design parameters refer to the project characteristic information such as the name, location, field area, degree of plot dispersion, installed capacity, etc. of a specific photovoltaic power generation project, as well as the design parameters such as component model, bracket type, inverter model, cable material, foundation form, and booster station voltage level. According to the different impacts of these project characteristics and design parameters on the equipment model or engineering quantity in the whole project or a local sub-project, module or meta-module, extraction and determination are carried out respectively. The finally determined project characteristics and design parameters can achieve an accurate description of a specific photovoltaic power generation project.

[0039] Regarding the global characteristic parameters of the photovoltaic project, the following are examples of the set characteristic parameters:

[0040] Project Characteristic Parameter Number Type 1 DC Capacity of Project (MWp) a001 Input 2 Longitude and Latitude of Project a003 Input 3 Terrain of the Site Area a004 Select 4 Area of the Site Area (Mu) a005 Input 5 Degree of Array Dispersion a006 Select 6 Power of Components (W) a007 Input 7 Number of Components per String a008 Input

[0041] The characteristic parameters of the photovoltaic field sub-project are set as shown in the following table:

[0042] 1 Type of Box-Type Transformer a1201 Select 2 Inverter Type a1202 Select 3 Model of Integrated Box-Type Inverter a1203 Select 4 Model of Box-Type Transformer a1204 Select 5 Number of Arrays a1205 Input 6 Material of Cable Tray a1206 Select

[0043] The characteristic parameters of the booster station / switch station sub-project are set as shown in the following table:

[0044] 1 Voltage Level b0001 Select 2 Main Wiring Form b0002 Select 3 Form of High-Voltage Switchgear b0003 Select 4 Number of Main Transformers b0004 Input 5 Capacity of Main Transformer b0005 Select 6 Number of SVG Sets b0006 Input 7 Capacity of SVG b0007 Select 8 Main Wiring Form of 35kV Bus b0008 Select

[0045] In the above technical solution, in Step 3, the equipment, installation items, construction project items or other project items included in the meta-module are jointly determined by the module division, project characteristics and design parameters in Step 1, and the calculation formula is composed of a design formula containing variables such as project characteristics and design parameters.

[0046] For example, the equipment and installation items included in the meta-module "Confluence and Substation Equipment and Installation" in the module "Photovoltaic Power Generation Field Equipment and Installation Project" may be DC confluence boxes, integrated box inverters, or string inverters and box transformers, which are determined by the confluence and inversion scheme (centralized or string type) of the photovoltaic array. The specific equipment model and quantity are determined according to equipment selection and project capacity.

[0047] For example, the number of DC confluence boxes can be calculated by the following calculation formula:

[0048]

[0049] Among them, E 项目直流容量 The unit is watt (W).

[0050] The formulas included in the photovoltaic power generation equipment and installation module are shown in the following table:

[0051]

[0052]

[0053] In the above technical solution, in Step 4, the typical engineering quantity template library corresponding to the meta-module consists of various engineering items under different project characteristics or design parameters and their corresponding calculation formulas. For example, for the meta-module of "convergence and power transformation equipment and installation", it includes the templates of integrated box inverters, DC busbar boxes, string inverters, and box transformers. Each template can be set corresponding to different design schemes (centralized, string type) and different equipment model selections, and includes the engineering quantity calculation formulas under the corresponding equipment models. The set of these templates constitutes the template library of this meta-module.

[0054] Some template tables of the project template library are shown as follows:

[0055] Number Template Name Template-Associated Characteristic Parameter 1 P-Type Monocrystalline Single Chip with Power of 525 - 550Wp, Double-Sided Component Model: 6 2 P-Type Monocrystalline Single Chip with Power of 525 - 550Wp, Single-Sided Component Model: 2 3 String-Type Inverter - 196kW Inverter Type: 2, Inverter Model: 196 4 String-Type Inverter - 320kW Inverter Type: 2, Inverter Model: 320 5 String-Type Inverter - 175kW Inverter Type: 2, Inverter Model: 175 6 P-Type Monocrystalline Single Chip with Power of 580 - 610Wp, Single-Sided Component Model: 3

[0056] In the above technical solution, in Step 5, the equipment, construction and installation project items, and other expense item libraries are composed of all equipment and installation works, construction works, and other expenses involved in the photovoltaic power generation project works such as primary and secondary electrical equipment, installation works, building materials, building works, individual projects, and land use fees for construction, construction management fees, etc., and unique codes are assigned to these items; the price library consists of different prices such as quarterly prices and cost prices of all items.

[0057] Some price libraries (unit price libraries) of the project are shown in the following table:

[0058]

[0059]

[0060] In the above technical solution, in Step 6, for a photovoltaic power generation project, after inputting and selecting the project characteristics and design parameters, each meta-module matches the templates in its corresponding template library one by one according to the project characteristics and design parameters in sequence, generates the cost of the engineering quantity of each meta-module, and then forms the total engineering quantity and cost of this photovoltaic power generation project.

[0061] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0062] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in one flow Figure One one flow or multiple flows and / or blocks Figure One or multiple blocks.

[0063] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing devices to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implement the functions specified in one flow Figure One one flow or multiple flows and / or blocks Figure One or multiple blocks.

[0064] These computer program instructions can also be loaded onto a computer or other programmable data processing devices, such that a series of operation steps are executed on the computer or other programmable devices to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable devices provide steps for implementing the functions specified in one flow Figure One one flow or multiple flows and / or blocks Figure One or multiple blocks.

[0065] Compiling the above method steps into a program and then storing it in a hard disk or other non-transitory storage medium constitutes the technical solution of "a non-transitory readable recording medium" of the present invention; and electrically connecting the storage medium to a computer processor and completing the soft start of the compression working condition of the compressed air energy storage system through data processing constitutes the technical solution of "a system for constructing a cost model of a photovoltaic power generation project" of the present invention.

[0066] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for constructing a photovoltaic power generation project cost model, characterized in that The following steps are involved: S1. According to the spatial distribution characteristics and design and construction procedures of the photovoltaic power generation project, the photovoltaic power generation project is decomposed into three levels: sub-project, module and meta-module; Each type of sub-project is divided into different equipment and installation engineering modules and construction engineering modules. Each module is further decomposed into meta-modules. The meta-module is the smallest indivisible cost unit, including uniquely coded equipment models, construction engineering items and other cost items; determine the meta-modules that each module must include, as well as the modules and meta-modules that each sub-project must include; S2. Determine the project characteristics and design parameters that affect the equipment model and engineering quantity changes in each sub-project, module and meta-module of the photovoltaic power generation project; S3. Establish a calculation template for the engineering quantity or equipment selection of each item in the meta-module and a unit price library for the corresponding items based on historical data and market conditions; S4. Take the project characteristics and design parameters as input items, substitute the prices corresponding to each item in the unit price library, and generate the engineering quantity and cost of a single meta-module, module, and sub-project from bottom to top; S5. Store the engineering quantities and costs of the sub-projects and / or modules as intermediate values, set a total engineering cost summary mechanism, and complete the construction of the photovoltaic power generation project cost model; the total engineering cost summary mechanism is: when the input project characteristics and design parameters are completely consistent with the corresponding projects at the sub-project or module level, directly call the intermediate value summary, otherwise start from the cost of the meta-module and summarize from the bottom up.

2. The method for constructing a photovoltaic power generation project cost model according to claim 1, characterized in that: The photovoltaic power generation project is divided into five sub-projects, namely photovoltaic field, booster station / switch station, collection line project, transportation project and others.

3. The method for constructing a photovoltaic power generation project cost model according to claim 2, characterized in that: The project characteristics include the type, location, site area, plot dispersion and installed capacity information of the photovoltaic power generation project; the design parameters include component model, bracket type, inverter model, cable material, foundation form and substation voltage level.

4. A non-transitory readable recording medium for storing one or more programs including a plurality of instructions, characterized in that: When the instruction is executed, the processing circuit will be caused to execute a method for constructing a photovoltaic power generation project cost model according to any one of claims 1-3.

5. A system for constructing a photovoltaic power generation project cost model, comprising a processing circuit and a memory electrically coupled thereto, characterized in that: The memory configuration stores at least one program, the program includes a plurality of instructions, and the processing circuit runs the program to execute a method for constructing a photovoltaic power generation project cost model according to any one of claims 1-3.

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