A method for evaluating environmental benefits of wind farm retrofitting and related devices

Abstract

The present application belongs to the field of wind power generation technology, and relates to a method for evaluating environmental benefits of wind farm reconstruction and related devices. The method comprises: determining the whole process of wind farm reconstruction as the evaluation object; collecting material, energy and waste data of each stage in the whole process of reconstruction; using the life cycle environmental impact assessment method to classify the inventory data into at least one environmental impact category, and calculating the total environmental impact value of the whole process of reconstruction; calculating the incremental power generation according to the parameters before and after the reconstruction, and multiplying the environmental impact factor of the traditional power structure to obtain the environmental benefits; superimposing the total environmental impact value and the environmental benefits to obtain the net environmental benefits, and judging the environmental feasibility of the reconstruction scheme according to the positive and negative of the net environmental benefits. The present application quantifies the environmental cost of the whole process of reconstruction and the environmental benefits of the incremental power generation replacing the traditional power, and uses the positive and negative of the net environmental benefits as the criterion, thereby providing an intuitive and reproducible quantitative decision basis for the environmental feasibility of the wind farm reconstruction scheme.

Description

Technical Field

[0001] This invention belongs to the field of wind power generation technology and relates to a method and related apparatus for evaluating the environmental benefits of wind farm retrofitting. Background Technology

[0002] Wind farm retrofitting and upgrading primarily targets wind farms that are approaching or have exceeded their designed operating lifespan. This involves replacing some or all turbines and upgrading supporting facilities to increase capacity and optimize power generation efficiency. Currently, evaluations of wind farm retrofitting and upgrading both domestically and internationally focus primarily on economic indicators such as internal rate of return, payback period, and cost per kilowatt-hour, with less attention paid to their environmental and ecological impacts. In reality, the retrofitting process involves multiple stages, including the dismantling and disposal of the original turbines, the manufacturing and transportation of new turbines, grid and infrastructure upgrades, and long-term operation and maintenance. Each stage consumes significant amounts of materials and energy and releases greenhouse gases, toxic substances, and solid waste into the environment. Simultaneously, the increased power generation after retrofitting can replace traditional fossil fuel power, resulting in significant positive environmental benefits.

[0003] However, the existing technology lacks a systematic and quantifiable method to incorporate the aforementioned environmental costs and benefits into a unified framework for comprehensive evaluation, making it difficult for decision-makers to intuitively determine whether wind farm retrofitting is environmentally feasible. Summary of the Invention

[0004] To address the problems in the existing technology, this invention provides a method and related apparatus for evaluating the environmental benefits of wind farm retrofitting. By quantifying the environmental costs of the entire retrofitting process and the environmental benefits of replacing traditional electricity with increased power generation, and using the positive or negative net environmental benefits as the criterion, it provides an intuitive and reproducible quantitative decision-making basis for the environmental feasibility of wind farm retrofitting schemes.

[0005] To achieve the above objectives, the present invention employs the following technical solution: In a first aspect, the present invention provides a method for evaluating the environmental benefits of wind farm retrofitting, comprising the following steps: The evaluation object is defined as the entire process of wind farm renovation, which includes at least the dismantling and disposal of the original wind turbines, the manufacturing and installation of new wind turbines, the renovation of supporting power grid facilities, and the operation and maintenance of the renovated wind farm. Collect material consumption data, energy consumption data, waste emission data, and the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after the renovation process at each stage. The life cycle environmental impact assessment method is adopted to classify the material consumption data, energy consumption data and waste emission data into at least one environmental impact category, and calculate the total environmental impact value of the entire wind farm retrofit process under the environmental impact category. Based on the rated power, average annual equivalent full-load hours, and operating years of the original wind farm, and the rated power, average annual equivalent full-load hours, and operating years of the wind farm after the renovation, the increased power generation after the renovation is calculated, and the environmental benefits brought about by the renovation are calculated based on the increased power generation. The total environmental impact is added together with the environmental benefits to obtain the net environmental benefit. The environmental feasibility of wind farm renovation is judged based on the positive or negative value of the net environmental benefit.

[0006] Preferably, the material consumption data includes at least one of the following materials: steel, glass fiber, resin, copper, aluminum, concrete, plastic, oil, and rubber; the energy consumption data includes electricity consumption and fuel consumption; and the waste emission data includes the emissions of solid waste, waste gas, and wastewater.

[0007] Preferably, the environmental impact category includes at least one or more of the following: global warming potential, abiotic resource depletion, ozone layer depletion, human toxicity, freshwater ecotoxicity, marine ecotoxicity, terrestrial ecotoxicity, photochemical oxidation, acidification, and eutrophication.

[0008] Preferably, the life cycle environmental impact assessment method adopts any one of the following: CML Leiden 2000 method, ReCiPe method, IMPACT 2002+ method, or EDIP method.

[0009] Preferably, the formula for calculating the increased power generation after the modification is as follows:

[0010] In the formula, To increase power generation after the renovation; The rated power of the wind farm after the renovation; This refers to the average annual equivalent full-load operating hours of the wind farm after the renovation. The service life of the wind farm after the renovation; This is the original rated power of the wind farm; This represents the original wind farm's average annual equivalent full-load operating hours. This refers to the original operating years of the wind farm.

[0011] Preferably, the formula for calculating the environmental benefits brought about by the modification is as follows:

[0012] In the formula, The environmental benefits brought about by the transformation; This represents the unit environmental impact factor for traditional power structures.

[0013] Preferably, the formula for calculating the net environmental benefit is:

[0014] In the formula, Net environmental benefits; The total environmental impact value of the entire wind farm retrofit process under a specific environmental impact category; when When the value is less than 0, the wind farm retrofit is deemed environmentally feasible; when... If the value is greater than or equal to 0, the wind farm retrofit is deemed not to be environmentally feasible.

[0015] Secondly, the present invention provides an evaluation system for the environmental benefits of wind farm retrofitting, comprising: The module for defining the scope of evaluation is used to determine that the evaluation object is the entire process of wind farm renovation. The entire process of wind farm renovation includes at least the dismantling and handling of the original wind turbines, the manufacturing and installation of new wind turbines, the renovation of supporting power grid facilities, and the operation and maintenance of the renovated wind farm. Data collection module: Used to collect material consumption data, energy consumption data, waste emission data, and the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after the renovation process. Environmental Impact Accounting Module: This module is used to classify the material consumption data, energy consumption data, and waste emission data into at least one environmental impact category using the life cycle environmental impact assessment method, and to calculate the total environmental impact value of the entire wind farm retrofit process under the environmental impact category. Benefit Quantification Calculation Module: Based on the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after renovation, the module calculates the increased power generation after renovation and calculates the environmental benefits brought about by the renovation based on the increased power generation. Net benefit determination module: This module is used to add the total environmental impact value to the environmental benefits to obtain the net environmental benefit, and to determine the environmental feasibility of wind farm renovation based on the positive or negative value of the net environmental benefit.

[0016] Thirdly, the present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement steps of an evaluation method for the environmental benefits of wind farm retrofitting.

[0017] Fourthly, the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of a method for evaluating the environmental benefits of wind farm retrofitting.

[0018] Compared with the prior art, the present invention has the following beneficial effects: By clearly defining the evaluation object as the entire process of wind farm retrofitting, including the dismantling and disposal of the original units, the manufacturing and installation of new units, the upgrading of the supporting power grid, and the operation and maintenance after the retrofit, the completeness of the life cycle inventory collection and the systematic nature of the environmental impact accounting are ensured, avoiding the underestimation of the environmental costs of the retrofit due to boundary omissions. By simultaneously collecting inventory data of materials, energy, and waste, as well as operating parameters such as the power, equivalent full-load hours, and operating years of the units before and after the retrofit, both an input basis for the life cycle impact assessment and a reproducible engineering basis for calculating the increased power generation are provided. The adoption of standardized life cycle environmental impact assessment methods integrates scattered data... By categorizing single data into environmental impact categories such as global warming and resource consumption and calculating the total environmental impact value, the scientific nature of the evaluation process and the comparability of the results are ensured. By calculating the increased power generation through operating parameters and combining them with traditional power structure factors to quantify environmental benefits, an objective expression of the environmental load avoided by the retrofit is achieved. Finally, the net environmental benefit is obtained by algebraically superimposing the total environmental impact value and environmental benefits. The positive or negative value of a single indicator is used as a direct criterion for the environmental feasibility of wind farm retrofit. Thus, life cycle assessment theory is transformed into an operational engineering decision-making tool in an intuitive and unambiguous way, applicable to wind farm retrofit projects in different regions, with different turbine models and different grid structures. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0022] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0023] The first objective of this invention is to provide a method for evaluating the environmental benefits of wind farm retrofitting, such as... Figure 1 As shown, it includes the following steps: S1. The evaluation object is defined as the entire process of wind farm renovation. The entire process of wind farm renovation includes at least the dismantling and disposal of the original wind turbine units (including unit dismantling, component classification, transportation, and recycling, landfilling or incineration of materials such as steel, fiberglass, and oil), the manufacturing and installation of new wind turbine units (involving the complete chain from raw material acquisition, processing and production, transportation to on-site hoisting and fixing of components such as blades, towers, foundations, generators, and gearboxes), the renovation of supporting power grid facilities (such as the materials and construction required for the expansion or upgrading of medium-voltage lines, substations, step-up substations and transmission lines), and the operation and maintenance of the wind farm after renovation (including regular inspections, parts replacement, lubricating oil consumables and other daily operations).

[0024] S2. Collect material consumption data, energy consumption data, waste emission data, and the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after the renovation process.

[0025] The material consumption data includes at least steel, fiberglass, resin, copper, aluminum, concrete, plastics, oil, and rubber, the quantities of which can be reasonably determined based on the demolition plan design documents, the technical specifications for the new unit procurement, the power grid renovation construction drawings, and the engineering material list. The energy consumption data covers the fuel consumption (such as diesel and gasoline) of construction machinery and transport vehicles, as well as the electricity consumption required for on-site operations and office work, which can be estimated based on the shift usage in the construction organization design or experience from similar projects. The waste emission data includes solid waste such as waste blades, towers, and foundation concrete generated during demolition, as well as the proportion of recycling, landfilling, or incineration, the emissions of construction dust, vehicle exhaust, and other exhaust gases, and the wastewater emissions generated from equipment cleaning and concrete curing, which can be calculated with reference to the material balance principle or industry emission coefficients. Meanwhile, the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the renovated wind farm can be directly obtained from the project feasibility study report, power generation operation records, or equipment nameplates.

[0026] S3. Using the life cycle environmental impact assessment method, classify the material consumption data, energy consumption data, and waste emission data into at least one environmental impact category, and calculate the total environmental impact value of the entire wind farm retrofit process under the environmental impact category.

[0027] Specifically, firstly, based on the characteristic factors and classification rules specified by the selected method (such as CML Leiden 2000, ReCiPe, IMPACT 2002+, or EDIP), the collected material consumption data, energy consumption data, and waste emission data are mapped to the environmental impact categories of interest. For example, the consumption of materials such as steel, copper, aluminum, and fiberglass is classified as non-biological resource consumption; greenhouse gas emissions such as carbon dioxide and methane are classified as global warming potential; emissions such as nitrogen oxides, sulfur oxides, and ammonia nitrogen are classified as acidification and eutrophication; particulate matter, heavy metals, and volatile organic compounds are classified as human toxicity and various ecotoxicities; ozone-depleting substances such as halogenated hydrocarbons are classified as ozone-depleting substances; and photochemical precursors such as non-methane total hydrocarbons are classified as ozone-depleting substances. The substances are classified into photochemical oxidation. Then, for each environmental impact category, the amount of each listed substance or emission is multiplied by the corresponding characteristic factor and summed to calculate the total environmental impact value of the entire wind farm retrofit process under that category (usually expressed in a credible equivalent unit). The above-mentioned environmental impact categories include at least one or more of the following: global warming potential, abiotic resource depletion, ozone layer depletion, human toxicity, freshwater ecotoxicity, marine ecotoxicity, terrestrial ecotoxicity, photochemical oxidation, acidification, and eutrophication. In practice, all or some categories can be flexibly selected according to the environmental sensitivity of the project area or the decision-making needs.

[0028] S4. Based on the rated power, annual equivalent full-load hours, and operating years of the original wind farm, and the rated power, annual equivalent full-load hours, and operating years of the wind farm after the renovation, calculate the increased power generation after the renovation, and calculate the environmental benefits brought about by the renovation based on the increased power generation.

[0029] The formula for calculating the increased power generation after the modification is as follows:

[0030] In the formula, To increase power generation after the renovation; The rated power of the wind farm after the upgrade is expressed in MW. The average annual equivalent full-load operating hours of the wind farm after the renovation are expressed in hours per year. The term represents the operational lifespan of the upgraded wind farm, expressed in years. The rated power of the original wind farm is expressed in MW. This represents the original wind farm's average annual equivalent full-load operating hours, expressed in hours per year. The original wind farm's operating life is expressed in years.

[0031] Rated power reflects the instantaneous output capacity of the unit, the annual equivalent full-load hours comprehensively reflect wind resource conditions, unit availability and power generation efficiency, and the operating years define the time span for environmental benefit accounting. The product of the three is the total power generation in the corresponding period.

[0032] The formula for calculating the environmental benefits brought about by the renovation is as follows:

[0033] In the formula, The environmental benefits brought about by the transformation (meaning the reduction in environmental load by avoiding the same amount of traditional electricity production). The unit environmental impact factor for traditional power structures is determined based on the latest officially released data (such as power grid emission factors) of the country or region where the assessment object is located or a widely recognized life cycle assessment database (such as Ecoinvent, ELCD, etc.), and usually, corresponding factors are selected for different environmental impact categories.

[0034] S5. The total environmental impact is added together with the environmental benefits to obtain the net environmental benefit. The environmental feasibility of the wind farm renovation is judged based on the positive or negative value of the net environmental benefit.

[0035] The formula for calculating the net environmental benefit is as follows:

[0036] In the formula, Net environmental benefits; The total environmental impact of the entire wind farm retrofit process under a specific environmental impact category (representing the environmental load directly or indirectly generated by dismantling, manufacturing, construction, transportation, operation and maintenance, and waste disposal). when When the value is less than 0, it indicates that the environmental benefits of power generation brought about by the renovation outweigh the environmental costs incurred in the renovation process itself. Therefore, the wind farm renovation plan is deemed environmentally feasible under this environmental impact category. If the value is greater than or equal to 0, it is determined that it is not environmentally feasible (that is, the environmental benefits brought by the transformation are insufficient to offset the environmental load caused by it, or the two are just equal).

[0037] A second objective of this invention is to provide an evaluation system for the environmental benefits of wind farm retrofitting, comprising: The module for defining the scope of evaluation is used to determine that the evaluation object is the entire process of wind farm renovation. The entire process of wind farm renovation includes at least the dismantling and handling of the original wind turbines, the manufacturing and installation of new wind turbines, the renovation of supporting power grid facilities, and the operation and maintenance of the renovated wind farm. Data collection module: Used to collect material consumption data, energy consumption data, waste emission data, and the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after the renovation process. Environmental Impact Accounting Module: This module is used to classify the material consumption data, energy consumption data, and waste emission data into at least one environmental impact category using the life cycle environmental impact assessment method, and to calculate the total environmental impact value of the entire wind farm retrofit process under the environmental impact category. Benefit Quantification Calculation Module: Based on the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after renovation, the module calculates the increased power generation after renovation and calculates the environmental benefits brought about by the renovation based on the increased power generation. Net benefit determination module: This module is used to add the total environmental impact value to the environmental benefits to obtain the net environmental benefit, and to determine the environmental feasibility of wind farm renovation based on the positive or negative value of the net environmental benefit.

[0038] This system can not only fully cover the material, energy, and waste data of the entire wind farm retrofit process, as well as the unit operating parameters before and after the retrofit, but also flexibly call mainstream life cycle assessment methods such as CML and ReCiPe to automatically calculate the total environmental impact value and power generation substitution benefits of multiple categories, and finally directly output the positive or negative judgment result of net environmental benefits, thus realizing the full-chain automated processing from raw data collection to environmental feasibility conclusion.

[0039] Example This embodiment takes a wind farm renovation project as an example to provide a detailed explanation of the environmental benefit evaluation method for wind farm renovation proposed in this invention, in order to verify its operability and universality.

[0040] Basic project parameters: The original wind farm had 37 turbines with a single unit capacity of 660 kW, for a total installed capacity of 24.42 MW, and had been in operation for 7 years. The renovation plan is to remove all the original wind turbines and install 17 turbines with a single unit capacity of 2 MW, bringing the total installed capacity after the renovation to 34 MW, with a designed service life of 20 years.

[0041] S1. The evaluation object is defined as the entire process of wind farm retrofitting, specifically including: dismantling and harmless treatment of the original wind turbine units (including dismantling, sorting, transportation, and recycling / landfill / incineration of components such as blades, towers, foundations, generators, and gearboxes); manufacturing of new units (including raw material acquisition and component processing), transportation, and on-site installation; retrofitting of the supporting medium-voltage power grid and step-up substation (including expansion or upgrading of facilities such as cables, transformers, and switchgear); operation and maintenance of the retrofitted wind farm (including regular inspections, lubricant replacement, and replacement of vulnerable parts); and the environmental benefits brought about by the increased power generation replacing traditional grid electricity. This embodiment focuses on quantifying the environmental impact categories of Global Warming Potential (GWP).

[0042] S2. Based on the project demolition and construction plan, the technical specifications for the new generating unit, the power grid renovation design drawings, and the operation and maintenance manual, collect data on material consumption, energy consumption, and waste emissions at each stage. Taking the manufacturing stage of the new generating unit as an example, the main material list is as follows: rotor blades used 11.7 tons of resin and 7.8 tons of glass fiber; tower used 143 tons of steel; foundation used 700 tons of concrete; generator used 6.49 tons of copper, steel, silicon, etc.; gearbox used 16 tons of iron and steel. Waste generated during the demolition of the original generating unit includes: approximately 82 tons of waste blades (glass fiber composite material), approximately 510 tons of tower steel, approximately 1850 tons of foundation concrete, approximately 3.5 tons of waste oil, and various metal scraps. Among these, the tower steel was recycled at an 85% rate and sent to the steel plant for remelting; the concrete was crushed and used as roadbed filler; and the waste blades were temporarily disposed of using local waste incineration power generation methods due to difficulties in recycling. In terms of energy consumption, construction and transportation machinery consumed approximately 45 tons of diesel oil, and the demolition and installation work consumed approximately 120 MWh of electricity. The power grid upgrade will add 12 tons of copper cable, 8 tons of aluminum busbars, 9 tons of HDPE sheathing pipes, and 0.5 tons of rubber seals. During the operation and maintenance phase, calculated over 20 years, the annual consumption will be 0.8 tons of lubricating oil and approximately 2 tons of small spare parts (steel, plastic, etc.) will be replaced. Some coefficients in the above list (such as recovery rate and oil consumption) were determined with reference to the "Technical Guidelines for Environmental Impact Assessment of Wind Farm Decommissioning and Upgrading" and experience from similar projects.

[0043] S3. SimaPro 7.0 life cycle assessment software was used, and the CML Leiden 2000 method was selected. Materials, energy, and waste from each stage in S2 were input into the software, and the characteristic equivalents of each inventory substance under the Global Warming Potential (GWP) category were calculated. For example, the production processes of steel and concrete contribute significantly to CO2 emissions; the incineration of waste blades releases CO2 and trace amounts of halogenated gases; diesel combustion produces CO2 and CH4; and the production of materials such as copper and aluminum primarily contributes to resource consumption.

[0044] Calculations show that the total environmental impact of the entire wind farm retrofit process (including dismantling, new turbine manufacturing, transportation, grid upgrades, operation and maintenance, and waste disposal) is [value missing]. =2.52×10 7 kg CO2eq.

[0045] S4. According to the project feasibility study report and historical operation records, the original wind farm had an average annual equivalent full-load operating hours of 1850 hours / year before the upgrade, and the predicted average annual equivalent full-load operating hours after the upgrade are 2500 hours / year. The original wind farm has been in operation for 7 years, and the operation period after the upgrade is 20 years. This example uses the incremental power generation from the feasibility study report. Calculations are performed to ensure accuracy.

[0046] According to the latest data released by the power grid in the region where the evaluation object is located, the GWP factor of the traditional power structure is 531 gCO2eq / kWh, then the environmental benefits... 9.03×10 8 kg CO2eq.

[0047] S5. By superimposing the total environmental impact and environmental benefits of the renovation process, then... 2.52×10 7 kg CO2eq+ ( 9.03×10 8 kg CO2eq) = 8.78×10 8 kg CO2eq<0; The net environmental benefit under this environmental impact category is negative. According to the judgment rules of this invention, the wind farm renovation plan has significant environmental feasibility in the dimension of global warming potential, that is, the clean power generation substitution benefit brought by the renovation is far higher than the environmental cost of the renovation itself.

[0048] This embodiment only uses GWP as an example for detailed calculation. In practical applications, the same methodology (such as ReCiPe or IMPACT 2002+) can be used based on the inventory data in S2 to evaluate other environmental impact categories such as ozone layer depletion, human toxicity, ecotoxicity, photochemical oxidation, acidification, and eutrophication. Simply call the corresponding characteristic factors in S3 and select the corresponding EFgrid factors in S4 to obtain the net environmental benefits for each dimension. Therefore, the method of this invention has good versatility and scalability, and is suitable for quantitative evaluation of the environmental benefits of wind farm retrofit projects of different turbine models, capacities, and regions.

[0049] In one embodiment of the present invention, a computer device is provided, comprising a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions from the computer storage medium to achieve a corresponding method flow or corresponding function. The processor described in this embodiment of the present invention can be used for operating a method for evaluating the environmental benefits of wind farm retrofitting.

[0050] This invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the terminal's operating system. Furthermore, this storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps of the method for evaluating the environmental benefits of wind farm retrofitting in the above embodiments.

[0051] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0052] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0053] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0054] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for evaluating the environmental benefits of wind farm retrofitting, characterized in that, Includes the following steps: The evaluation object is defined as the entire process of wind farm renovation, which includes at least the dismantling and disposal of the original wind turbines, the manufacturing and installation of new wind turbines, the renovation of supporting power grid facilities, and the operation and maintenance of the renovated wind farm. Collect material consumption data, energy consumption data, waste emission data, and the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after the renovation process at each stage. The life cycle environmental impact assessment method is adopted to classify the material consumption data, energy consumption data and waste emission data into at least one environmental impact category, and calculate the total environmental impact value of the entire wind farm retrofit process under the environmental impact category. Based on the rated power, average annual equivalent full-load hours, and operating years of the original wind farm, and the rated power, average annual equivalent full-load hours, and operating years of the wind farm after the renovation, the increased power generation after the renovation is calculated, and the environmental benefits brought about by the renovation are calculated based on the increased power generation. The total environmental impact is added together with the environmental benefits to obtain the net environmental benefit. The environmental feasibility of wind farm retrofitting is judged based on the positive or negative value of the net environmental benefit.

2. The method for evaluating the environmental benefits of wind farm retrofitting according to claim 1, characterized in that, The material consumption data includes at least one of the following materials: steel, fiberglass, resin, copper, aluminum, concrete, plastic, oil, and rubber; the energy consumption data includes electricity consumption and fuel consumption; and the waste emission data includes the emissions of solid waste, waste gas, and wastewater.

3. The method for evaluating the environmental benefits of wind farm retrofitting according to claim 1, characterized in that, The environmental impact categories include at least one or more of the following: global warming potential, abiotic resource depletion, ozone layer depletion, human toxicity, freshwater ecotoxicity, marine ecotoxicity, terrestrial ecotoxicity, photochemical oxidation, acidification, and eutrophication.

4. The method for evaluating the environmental benefits of wind farm retrofitting according to claim 1, characterized in that, The life cycle environmental impact assessment method adopts any one of the following: CML Leiden 2000 method, ReCiPe method, IMPACT 2002+ method, or EDIP method.

5. The method for evaluating the environmental benefits of wind farm retrofitting according to claim 1, characterized in that, The formula for calculating the increased power generation after the modification is as follows: In the formula, To increase power generation after the renovation; The rated power of the wind farm after the renovation; This refers to the average annual equivalent full-load operating hours of the wind farm after the renovation. The service life of the wind farm after the renovation; This is the original rated power of the wind farm; This represents the original wind farm's average annual equivalent full-load operating hours. This refers to the original operating years of the wind farm.

6. The method for evaluating the environmental benefits of wind farm retrofitting according to claim 5, characterized in that, The formula for calculating the environmental benefits brought about by the renovation is as follows: In the formula, The environmental benefits brought about by the transformation; This represents the unit environmental impact factor for traditional power structures.

7. The method for evaluating the environmental benefits of wind farm retrofitting according to claim 6, characterized in that, The formula for calculating the net environmental benefit is as follows: In the formula, Net environmental benefits; The total environmental impact value of the entire wind farm retrofit process under a specific environmental impact category; when When the value is less than 0, the wind farm retrofit is deemed environmentally feasible; when... If the value is greater than or equal to 0, the wind farm retrofit is deemed not to be environmentally feasible.

8. An evaluation system for the environmental benefits of wind farm retrofitting, characterized in that, include: The module for defining the scope of evaluation is used to determine that the evaluation object is the entire process of wind farm renovation. The entire process of wind farm renovation includes at least the dismantling and handling of the original wind turbines, the manufacturing and installation of new wind turbines, the renovation of supporting power grid facilities, and the operation and maintenance of the renovated wind farm. Data collection module: Used to collect material consumption data, energy consumption data, waste emission data, and the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after the renovation process. Environmental Impact Accounting Module: This module is used to classify the material consumption data, energy consumption data, and waste emission data into at least one environmental impact category using the life cycle environmental impact assessment method, and to calculate the total environmental impact value of the entire wind farm retrofit process under the environmental impact category. Benefit Quantification Calculation Module: Based on the rated power, annual equivalent full-load hours, and operating years of the original wind farm and the rated power, annual equivalent full-load hours, and operating years of the wind farm after renovation, the module calculates the increased power generation after renovation and calculates the environmental benefits brought about by the renovation based on the increased power generation. Net benefit determination module: This module is used to add the total environmental impact value to the environmental benefits to obtain the net environmental benefit, and to determine the environmental feasibility of wind farm renovation based on the positive or negative value of the net environmental benefit.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method as described in any one of claims 1-7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method as described in any one of claims 1-7.

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