Evaluation method and device based on new energy power station

Abstract

The invention relates to the technical field of power generation management, in particular to an evaluation method and device based on a new energy power station. And five dimensions of resource environment, system design, equipment quality, construction quality and production operation are evaluated, so that the overall condition of the new energy power station is comprehensively and deeply known, and an important basis and an effective systematic support are provided for normal promotion of asset transaction of the new energy power station. The dynamic evaluation method is adopted and is different from static evaluation, and the dynamic evaluation is concentrated in the aspects of data collection and processing, prediction and modeling, subjective factor processing and the like, so that the accuracy and effectiveness of the overall evaluation are ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power generation management, and in particular to an evaluation method and device based on a new energy power station. Background Art

[0002] Against the backdrop of the global promotion of low-carbon transformation and energy revolution, investment and mergers and acquisitions in the new energy industry remain a highlight.

[0003] Among the existing technologies, most of them are used for static evaluation in the market, which cannot effectively evaluate the risks and value of the development, construction and operation and maintenance of new energy power stations. At the same time, the project parties are also faced with the dilemma of lack of independent third-party evaluation, and it is difficult to gain the trust and support of the funders. Summary of the invention

[0004] In response to the above problems, the present disclosure provides an evaluation method and device based on new energy power stations, which evaluates new energy power stations based on multiple dimensions and ultimately provides both qualitative and quantitative rating conclusions to facilitate asset decision-making.

[0005] In the first aspect, an evaluation method based on a new energy power station includes:

[0006] The new energy power stations to be evaluated are evaluated from the dimensions of resources and environment, system design, equipment quality, construction quality and production operation, and the resource and environment scores, equipment quality scores, system design scores, construction quality scores and production operation scores are obtained;

[0007] The overall asset evaluation score of the power plant is obtained by weighting and summing the resource and environment score, equipment quality score, system design score, construction quality score and production operation score;

[0008] The new energy power stations to be evaluated are rated based on the overall asset evaluation scores of the power stations.

[0009] Furthermore, the resource and environment score includes: land nature score and natural resource evaluation score;

[0010] The resource and environment assessment value is obtained by taking the weighted sum of the land nature score and the natural resource score.

[0011] Furthermore, the land nature score includes: giving a score based on the actual land use of the project, where the agricultural land score < the construction land score < the unused land score.

[0012] Furthermore, the natural resource evaluation score includes: calculating the utilization ratio of the project, setting the natural resource evaluation benchmark score, if the ratio is greater than or equal to 1, the score is equal to the benchmark score; if the ratio is less than 1, the score is equal to the ratio multiplied by the benchmark score;

[0013] The ratio calculation formula is: project utilization ratio = project utilization hours / utilization hours area hours;

[0014] The utilization hours and regional hours are calculated by weighted average of public data on wind and solar resources.

[0015] Furthermore, the system design score includes: feasibility study report score, and design score;

[0016] When a feasibility study report exists, the feasibility study report score will be assessed according to industry standards; when a feasibility study report does not exist, no score will be awarded;

[0017] Design scores are obtained by evaluating electrical, civil engineering, and access according to industry specifications;

[0018] The feasibility study report score, as well as the electrical, civil engineering, and access design scores are weighted and summed to obtain the system design score.

[0019] Furthermore, the equipment quality score includes:

[0020] Key equipment will be evaluated and points will be awarded if the brand of the main equipment is in the preset list, otherwise no points will be awarded; key equipment includes: components, inverters and transformers.

[0021] Further, the construction quality score includes:

[0022] Inspect and evaluate the construction quality of each individual item of power station projects during the construction and operation periods according to domestic and industry standards;

[0023] The individual items include: performance testing and debugging of component quality, inverters, and transformers, and multi-dimensional verification of bracket installation and lightning protection and grounding;

[0024] Set a total benchmark score for construction quality. If a single item fails the test, points will be deducted until the benchmark score is fully deducted.

[0025] Furthermore, the production operation score includes: power generation capacity score, equipment operation reliability score and fault elimination timeliness score;

[0026] The production operation score is obtained by weighted summing up the power generation capacity score, equipment operation reliability score and timely fault elimination score.

[0027] Further, the power generation capacity score includes: determining the power generation capacity score based on the deviation between the feasibility value of the estimated power generation and the actual value of the power generation, and the actual power generation is obtained through a collection device or cloud connection;

[0028] The calculation formula is:

[0029] A number of deviation rate intervals are set, and the power generation capacity score is determined according to the deviation rate interval in which the deviation rate falls.

[0030] Furthermore, the equipment operation reliability score includes: setting an equipment operation reliability benchmark score, equipment operation reliability score = equipment operation reliability benchmark score * photovoltaic power station availability.

[0031] Furthermore, the defect elimination timeliness score is calculated using the following formula:

[0032] Timely defect elimination rate = (actual number of defects eliminated / number of defects to be eliminated) * 100%

[0033] Set a benchmark score for the timely defect elimination rate. When the timely defect elimination rate is greater than or equal to the first threshold, the score for the timely defect elimination rate is equal to the benchmark score. When the timely defect elimination rate is greater than or equal to the second threshold and less than the first threshold, the score for the timely defect elimination rate is equal to the benchmark score for the timely defect elimination rate - (100% - timely defect elimination rate) * 2. When the timely defect elimination rate is less than the second threshold, no score will be awarded.

[0034] In a second aspect, an evaluation device based on a new energy power station includes: a sub-evaluation unit 201, a total evaluation unit 202 and a rating unit 203;

[0035] The sub-evaluation unit 201 is used to evaluate the new energy power station to be evaluated from the dimensions of resource environment, system design, equipment quality, construction quality and production operation, and obtain resource environment score, equipment quality score, system design score, construction quality score and production operation score;

[0036] The overall evaluation unit 202 is used to obtain the overall asset evaluation score of the power plant by weighted summing up the resource and environment score, the equipment quality score, the system design score, the construction quality score and the production and operation score;

[0037] The rating unit 203 is used to rate the new energy power station to be evaluated according to the overall asset evaluation score of the power station.

[0038] In a third aspect, an electronic device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0039] a memory storing a computer program;

[0040] The processor is used to implement the above-mentioned evaluation method based on new energy power stations when executing the computer program stored in the memory.

[0041] In a fourth aspect, a computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the evaluation method based on a new energy power station is implemented.

[0042] The present disclosure has at least the following beneficial effects:

[0043] The present disclosure adopts a dynamic evaluation method, which is different from static evaluation. Dynamic evaluation focuses on data collection and processing, prediction and modeling, and subjective factor processing to ensure the accuracy and effectiveness of the overall evaluation.

[0044] By establishing a set of scientific, fair and objective new energy power station evaluation standards and models, we can conduct a quantitative assessment of the comprehensive situation of new energy power stations and build industry credibility, providing an effective reference for investors to choose suitable new energy power stations, improving market efficiency, promoting the reasonable pricing and trading of new energy power station assets, and promoting the healthy development of the entire industry.

[0045] By evaluating the five dimensions of resources and environment, system design, equipment quality, construction quality, and production operation, we can gain a comprehensive and in-depth understanding of the overall status of new energy power stations, and provide an important basis and effective systematic support for the normal advancement of new energy power station asset transactions.

[0046] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 This is a flow chart of the evaluation method according to the embodiment of the present disclosure;

[0049] Figure 2 This is a schematic diagram of the structure of the evaluation device according to the embodiment of the present disclosure;

[0050] Figure 3 A schematic diagram of the electronic device structure. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0052] like Figure 1 As shown, an evaluation method based on a new energy power station includes:

[0053] S101, evaluate the new energy power station to be evaluated from the dimensions of resources and environment, system design, equipment quality, construction quality and production operation, and obtain the resource and environment score, equipment quality score, system design score, construction quality score and production operation score;

[0054] S102, weighted sum of resource and environment score, equipment quality score, system design score, construction quality score and production operation score to obtain the overall asset evaluation score of the power plant;

[0055] S103, rating the new energy power station to be evaluated based on the overall asset evaluation score of the power station.

[0056] The specific implementation is as follows:

[0057] The new energy power stations to be evaluated are evaluated from five dimensions: resource environment, system design, equipment quality, construction quality, and production operation. The dimensions are as follows:

[0058] Resource and environmental assessment: Resource and environmental assessment focuses on the natural resource conditions and environmental factors in the area where the new energy power station is located, and evaluates the risks that may arise from the development and utilization of new energy. Resource and environmental rating comprehensively considers factors such as wind and solar resources and land properties. For example, a photovoltaic power station:

[0059] Land nature: my country's land can be divided into three categories according to different uses: agricultural land, construction land, and unused land. Scores are given based on the actual land use of the project, with agricultural land receiving 0 points (cannot be used as a site), construction land receiving 6 points (partially available, with restrictions, to be determined based on actual conditions), and unused land receiving 10 points (available).

[0060] Natural resources: Access wind and solar resource data from NASA and Meteonorm (including irradiation, optimal inclination angle and power generation for provinces, cities, districts and counties across the country), and compare them with the direct irradiance, oblique irradiance and power generation of the power station to be evaluated.

[0061] Indicator calculation formula: Project utilization hours = Project utilization hours / Utilization hours area hours. Scoring method, give a benchmark score, if >= 1, the score is equal to the benchmark score, <1, calculated value * benchmark score.

[0062] Utilization hours and regional hours are calculated by weighted average of NASA and Meteonorm related data.

[0063] Resource and environment score = land nature score * land nature weight + natural resource score * natural resource weight, where land nature weight + natural resource weight = 1.

[0064] System design evaluation: mainly focuses on the rationality and reliability of the overall design of the new energy power station.

[0065] Feasibility study report: Whether there is a feasibility study report for the power station to be evaluated. If there is a feasibility study report, the credibility of the report will be evaluated according to relevant specifications ("Method for Compilation of Feasibility Study Reports for Photovoltaic Power Generation Projects" (QSPI9705-2016)). If the credibility is high, points will be awarded (benchmark points); otherwise, no points will be awarded for this item.

[0066] Electrical, civil engineering, access and other designs: Evaluate whether the design complies with the "Specifications for Design of Photovoltaic Power Stations" (GB50797-2012). If it complies with the specifications, points will be awarded; otherwise, no points will be awarded for this item.

[0067] Equipment quality assessment: key equipment (including components, inverters, transformers, etc.) is assessed, and the scoring method is that if the main equipment brand is on the group list or first-tier brands, it will be scored, otherwise no score will be given. Taking photovoltaic power stations as an example, the calculation method is:

[0068] Equipment quality score = component brand score * component brand weight + inverter brand score * inverter brand weight;

[0069] Among them, component brand weight + inverter brand weight = 1.

[0070] Construction quality: In accordance with common domestic and industry standards, such as GB 50794-2012 "Specifications for Construction of Photovoltaic Power Stations", GB 50797-2012 "Specifications for Design of Photovoltaic Power Stations", GB / T 50796-2012 "Specifications for Acceptance of Photovoltaic Power Station Projects", etc., the construction quality of power station projects during the construction and operation periods is inspected and evaluated. Usually, the sampling method is used to perform performance tests and commissioning on component quality, inverters, and transformers, and to verify multiple dimensions such as bracket installation and lightning protection and grounding. Scoring method: According to the number of categories tested, the total benchmark score is set. If a single item fails the test, points will be deducted until the benchmark points are deducted and the overall construction quality module score is 0.

[0071] Production operation: Production operation evaluation is to evaluate the performance and risks of the actual operation of the new energy power station in order to identify potential problems and optimize operation strategies.

[0072] Power generation capacity: Compare the deviation between the power generation estimated in the feasibility study and the actual power generation. The actual power generation is obtained through data collection devices or cloud connection.

[0073] Calculation formula:

[0074] Scoring method: If the deviation rate is 3%, it is equal to the benchmark score; if it is 3% to 5%, it is equal to 8 points; if it is 5% to 8%, it is equal to 6 points; if it is 8% to 10%, it is equal to 4 points; if it is >10%, no points will be awarded for this item.

[0075] Equipment operation reliability, taking photovoltaic as an example:

[0076] Calculation formula: PV power station availability rate = PV power station availability factor AFs;

[0077] Scoring method: calculated value*baseline score

[0078] Timely rate of defect elimination:

[0079] Calculation formula: Timely defect elimination rate = (actual number of defects eliminated / number of defects to be eliminated) * 100%

[0080] Scoring method: If the timely defect elimination rate is >=95%, it is equal to the benchmark score; if it is >=85% and <95%, it is equal to the benchmark score - (100% - calculated value) * 2; if it is <85%, no score will be awarded, that is, 0.

[0081] In summary, the overall asset evaluation score of the power station = resource and environment score * resource and environment weight + equipment quality score * equipment quality weight + system design score * system design weight + construction quality score * construction quality weight + production and operation score * production and operation weight. Among them, resource and environment weight + equipment quality weight + system design weight + construction quality weight + production and operation weight = 1.

[0082] Power plant asset evaluation and classification:

[0083] Rating Rating Criteria Rating Conclusion A+ ≥95 high quality A [85-95) excellent B [70-80) good C [60-70) generally D <60 Difference

[0084] like Figure 2 As shown, an evaluation device based on a new energy power station includes: a sub-evaluation unit 201, a total evaluation unit 202 and a rating unit 203;

[0085] The sub-evaluation unit 201 is used to evaluate the new energy power station to be evaluated from the dimensions of resource environment, system design, equipment quality, construction quality and production operation, and obtain resource environment score, equipment quality score, system design score, construction quality score and production operation score;

[0086] The overall evaluation unit 202 is used to obtain the overall asset evaluation score of the power plant by weighted summing up the resource and environment score, the equipment quality score, the system design score, the construction quality score and the production and operation score;

[0087] The rating unit 203 is used to rate the new energy power station to be evaluated according to the overall asset evaluation score of the power station.

[0088] like Figure 3 As shown, the present disclosure provides an electronic device, including a processor 301, a communication interface 302, a memory 303 and a communication bus 304, wherein the processor 301, the communication interface 302 and the memory 303 communicate with each other through the communication bus 304;

[0089] Memory 303, storing computer programs;

[0090] The processor 301 is configured to implement the above method when executing the computer program stored in the memory 303 .

[0091] The present disclosure provides a computer-readable storage medium storing a computer program, wherein the computer program implements the above method when executed by a processor.

[0092] The computer-readable storage medium may be included in the device / apparatus described in the above embodiment; or it may exist independently without being assembled into the device / apparatus. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present disclosure is implemented.

[0093] According to an embodiment of the present disclosure, a computer-readable storage medium may be a non-volatile computer-readable storage medium, for example, may include but is not limited to: 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), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present disclosure, a computer-readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0094] Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An evaluation method based on a new energy power station, characterized in that: include: The new energy power stations to be evaluated are evaluated from the dimensions of resources and environment, system design, equipment quality, construction quality and production operation, and the resource and environment scores, equipment quality scores, system design scores, construction quality scores and production operation scores are obtained; The overall asset evaluation score of the power plant is obtained by weighting and summing the resource and environment score, equipment quality score, system design score, construction quality score and production operation score; The new energy power stations to be evaluated are rated based on the overall asset evaluation scores of the power stations.

2. The evaluation method based on a new energy power station according to claim 1 is characterized in that: Resource and environment score, including land nature score and natural resource score; The weighted sum of the land nature score and the natural resource score is used to obtain the resource and environmental assessment value; Land nature score, including: score given according to the actual land use of the project, where agricultural land score < construction land score < unused land score; The natural resource evaluation score includes: calculating the utilization ratio of the project and setting the natural resource evaluation benchmark score. If the ratio is greater than or equal to 1, the score is equal to the benchmark score; if the ratio is less than 1, the score is equal to the ratio multiplied by the benchmark score; The ratio calculation formula is: project utilization ratio = project utilization hours / utilization hours area hours; The utilization hours and regional hours are calculated by weighted average of public data on wind and solar resources.

3. The evaluation method based on a new energy power station according to claim 1 is characterized in that: System design score, including: feasibility study report score and design score; When a feasibility study report exists, the feasibility study report score will be assessed according to industry standards; when a feasibility study report does not exist, no score will be awarded; Design scores are obtained by evaluating electrical, civil engineering, and access according to industry specifications; The feasibility study report score, as well as the electrical, civil engineering, and access design scores are weighted and summed to obtain the system design score; Equipment quality score, including: Key equipment is evaluated. If the main equipment brand is in the preset list, it will score points. Otherwise, no points will be awarded. Key equipment includes: components, inverters and transformers. Construction quality score, including: Inspect and evaluate the construction quality of each individual item of power station projects during the construction and operation periods according to domestic and industry standards; The individual items include: performance testing and debugging of component quality, inverters, and transformers, and multi-dimensional verification of bracket installation and lightning protection and grounding; Set a total benchmark score for construction quality. If a single item fails the test, points will be deducted until the benchmark score is fully deducted.

4. The evaluation method based on a new energy power station according to claim 1 is characterized in that: Production operation score, including: power generation capacity score, equipment operation reliability score and fault elimination timeliness score; The production operation score is obtained by weighted summing up the power generation capacity score, equipment operation reliability score and timely fault elimination score.

5. The evaluation method based on a new energy power station according to claim 4 is characterized in that: Power generation capacity score, including: power generation capacity score is determined by comparing the deviation between the estimated power generation feasibility value and the actual power generation value. The actual power generation is obtained through a collection device or cloud connection; The calculation formula is: A number of deviation rate intervals are set, and the power generation capacity score is determined according to the deviation rate interval in which the deviation rate falls.

6. The evaluation method based on a new energy power station according to claim 4 is characterized in that: Equipment operation reliability score, including: setting equipment operation reliability benchmark score, equipment operation reliability score = equipment operation reliability benchmark score * photovoltaic power station availability.

7. The evaluation method based on a new energy power station according to claim 4 is characterized in that: The score of timely defect elimination rate is as follows: Timely defect elimination rate = (actual number of defects eliminated / number of defects to be eliminated) * 100% Set a benchmark score for the timely defect elimination rate. When the timely defect elimination rate is greater than or equal to the first threshold, the score for the timely defect elimination rate is equal to the benchmark score. When the timely defect elimination rate is greater than or equal to the second threshold and less than the first threshold, the timely defect elimination rate score is equal to the timely defect elimination rate benchmark score - (100% - timely defect elimination rate) * 2; when the timely defect elimination rate is less than the second threshold, no score will be awarded.

8. An evaluation device based on a new energy power station, characterized in that: include: sub-assessment units, total assessment units and rating units; The sub-assessment unit is used to evaluate the new energy power station to be evaluated from the dimensions of resources and environment, system design, equipment quality, construction quality and production operation, and obtain the resource and environment score, equipment quality score, system design score, construction quality score and production operation score; The total evaluation unit is used to obtain the overall asset evaluation score of the power plant by weighted summing up the resource and environment score, equipment quality score, system design score, construction quality score and production operation score; The rating unit is used to rate the new energy power station to be evaluated based on the overall asset evaluation score of the power station.

9. An electronic device, characterized in that: It includes a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other via the communication bus; a memory storing a computer program; The processor is used to implement an evaluation method based on a new energy power station as described in any one of claims 1 to 7 when executing a computer program stored in a memory.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, an evaluation method based on a new energy power station as described in any one of claims 1 to 7 is implemented.

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