Energy efficiency evaluation analysis and method of wind-solar hybrid integrated power station

Abstract

The present invention discloses an energy efficiency evaluation and analysis method for a wind-solar-complementary integrated power station, which relates to the technical field of power station energy efficiency evaluation and analysis, including technical feasibility evaluation, economic rationality evaluation, environmental benefit evaluation and social benefit evaluation; the technical feasibility evaluation is the selection and configuration of equipment: evaluating whether the selection of key equipment such as wind turbines and solar photovoltaic panels is reasonable, and whether they are adapted to local natural conditions such as wind speed, wind direction, and solar radiation. The energy efficiency evaluation and analysis method for a wind-solar-complementary integrated power station described in the present invention, through the evaluation and analysis of technical feasibility, economic rationality, environmental benefits and social benefits, plays a role in ensuring the stable operation of the system, improving the system integration capability for efficient power generation and the society's recognition and acceptance of green energy, reducing investment risks, enhancing the market competition of power stations and the recognition and support of wind-solar-complementary power generation projects by all sectors of society.

Description

Technical Field

[0001] The present invention relates to the technical field of power station energy efficiency evaluation and analysis, and in particular to an energy efficiency evaluation and analysis method for a wind-solar complementary integrated power station. Background Art

[0002] Both wind power generation and photovoltaic power generation have strong randomness, volatility and intermittency. Large-scale wind power and photovoltaic grid connection poses a severe test to the safe and stable operation of the power system. By utilizing the complementary characteristics of wind power and photovoltaics and aggregating the output of wind power and photovoltaics, the randomness of wind power and photovoltaic output can be effectively reduced. The wind-solar complementary power generation system combines wind energy and solar energy, improves operating efficiency through intelligent technology, and has the advantages of environmental protection, renewable, and wide distribution. Due to the complementarity of wind energy and solar energy, the system can complement each other at different times and seasons to improve power generation efficiency and stability.

[0003] For example, the Chinese patent with publication number CN115713252A discloses a method for optimizing the comprehensive benefit evaluation scheme of a water-wind-solar-storage multi-energy complementary system, constructs a comprehensive benefit evaluation index matrix of a water-wind-solar-storage multi-energy complementary system, and obtains the subjective and objective comprehensive weight coefficients of each type of evaluation index through tomographic analysis and entropy weight method; constructs a target benefit evaluation scheme optimization model based on the subjective and objective comprehensive weight coefficients; solves the target benefit evaluation scheme optimization model to obtain the target comprehensive benefit evaluation scheme of a water-wind-solar-storage multi-energy complementary system. It takes into account the subjective preferences of expert experience and respects the objective characteristics of the data itself; by solving the target benefit evaluation scheme optimization model, the best scheme for the comprehensive benefit evaluation of a water-wind-solar-storage multi-energy complementary system can be quickly identified, providing intelligent and rapid decision-making technical support for the comparison of various installed capacity scale installation schemes and analysis of different control and operation schemes of a water-wind-solar-storage multi-energy complementary system.

[0004] The existing technology has the following problems:

[0005] It is relatively simple and convenient to evaluate the complementary characteristics of the energy efficiency evaluation and analysis of the wind-solar complementary integrated power station by the amount of abandoned electricity from wind and solar power. However, it only considers the results of bundling wind and solar power output and ignores the intermediate impact process. It is not close enough to the essence of the problem and has weak guiding significance for the development and utilization of wind-solar integrated power station. The difference in volatility between the energy efficiency evaluation and analysis output of various wind-solar complementary integrated power stations and the output of single energy is studied. The evaluation indicators proposed are too single, and the analysis of the complementary characteristics of the energy efficiency evaluation and analysis output of various wind-solar complementary integrated power stations is too one-sided, which reduces the role of the evaluation system efficiency level. How to accurately and comprehensively evaluate the complementary characteristics of the energy efficiency evaluation and analysis output of wind-solar complementary integrated power stations still needs further research to ensure the accuracy and rationality of the evaluation and analysis results. Summary of the invention

[0006] The present invention provides an energy efficiency evaluation analysis and method for a wind-solar hybrid integrated power station to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] An energy efficiency evaluation analysis and method for wind-solar hybrid integrated power station, including technical feasibility evaluation, economic rationality evaluation, environmental benefit evaluation and social benefit evaluation;

[0009] The technical feasibility assessment is to evaluate the selection and configuration of equipment: whether the selection of key equipment such as wind turbines and solar photovoltaic panels is reasonable and whether they are suitable for local natural conditions such as wind speed, wind direction, and solar radiation;

[0010] System integration capability: examines the integration technology level of the wind-solar hybrid system, including the design of the energy management system, the effectiveness of data collection and transmission technology, etc.;

[0011] Technology maturity: Assess the maturity of wind power generation technology and solar photovoltaic technology, as well as the development level of energy storage technology and energy management technology.

[0012] Preferably, the economic rationality assessment is the initial investment cost: including equipment purchase, installation, land lease or purchase, infrastructure construction and other costs;

[0013] Operating costs: covering equipment maintenance, repair, replacement costs, employee salaries, insurance, taxes, etc.

[0014] Power generation and revenue: Based on local wind and solar energy resources, the annual power generation is predicted, and economic indicators such as return on investment and net present value are calculated.

[0015] Preferably, the environmental benefit assessment, energy conservation and emission reduction effect assessment, and the effect of wind-solar hybrid integrated power station in reducing fossil energy consumption and greenhouse gas emissions compared with traditional power generation methods;

[0016] Ecological impact analysis: the impact of project construction and operation on the surrounding natural ecological environment, including land occupation, vegetation destruction, water resource impact, air pollution and noise pollution.

[0017] Preferably, the social benefit assessment and energy structure optimization: examine the contribution of the wind-solar hybrid integrated power station to the optimization of the local energy structure; economic development assessment, the role of the project construction in promoting local economic development, such as creating employment opportunities and promoting the development of related industries;

[0018] Social impact analysis: the impact of the project on local communities, cultural heritage, ecosystems and other social aspects.

[0019] An energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station, including data collection, performance evaluation indicators, simulation and prediction;

[0020] The light intensity and wind speed data are collected through meteorological stations, solar radiation measuring stations and other equipment, and real-time data are obtained using remote sensing technology or ground monitoring equipment. In terms of system operation data, the operation data of the wind-solar complementary integrated power station is collected, including power generation, equipment failure rate, and maintenance records.

[0021] Preferably, the performance evaluation indicator output and load data include data on converting solar energy from photovoltaic panels into electrical energy. Data on wind turbines converting wind energy into electricity Overall supply load data for complementary utilization of wind and solar energy

[0022] Data on how much energy a battery or energy storage system stores and releases Make the system stable and output capacity under various weather conditions; calculate volatility index I s , expressed as,

[0023]

[0024] Climbing index I c , expressed as,

[0025]

[0026] Load tracking index I F , expressed as,

[0027]

[0028] Peak load index Among them, N t Indicates the total number of moments, It represents the average value of wind, solar and water integrated power stations; represents the change of energy efficiency output of wind-solar hybrid integrated power station at time t, f t Indicates the consistency between the energy efficiency output of the wind-solar hybrid integrated power station and the load change; They represent the maximum and minimum output differences of the energy efficiency output, wind power output and photovoltaic output of the wind-solar hybrid integrated power station respectively;

[0029] Preprocessing includes standardization of evaluation analysis, expressed as, Where n is the number of solutions; I max is the maximum value of the indicators of each scheme; I min is the minimum value of the indicators of each scheme; and the average value of the evaluation indicators of the energy efficiency and output complementary characteristics of the wind-solar hybrid integrated power station

[0030] The column vector of force complementary characteristic evaluation value is calculated according to the weight column vector and the complementary characteristic evaluation analysis index, which is expressed as: V = [V1, V2, ..., V n ] T Where V i , i=1, 2, ...n represents the complementary characteristic evaluation and analysis value of the ith scheme, and performs scheme comparative evaluation, including calculating the complementary characteristic evaluation and analysis index results and complementary characteristic evaluation values ​​of each scheme. The larger the evaluation value, the better the scheme; the smaller the evaluation index value, the better the complementary characteristics of the scheme in this aspect.

[0031] Preferably, the technical value is evaluated in simulation and prediction to achieve trend analysis, and the trend of wind and solar energy resources changes in the future period is estimated based on historical data and trend prediction models;

[0032] By using system simulation, the simulation software can simulate the operation of the wind-solar hybrid integrated power station and evaluate the energy efficiency performance under different operation strategies.

[0033] Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art:

[0034] 1. The present invention provides an energy efficiency evaluation analysis and method for a wind-solar complementary integrated power station. By combining a large number of data collection and trend prediction models, it can predict the trend of wind and solar energy resources changes in the future and improve the efficiency level of the evaluation system.

[0035] 2. The present invention provides an energy efficiency evaluation and analysis method for a wind-solar complementary integrated power station. The complementary characteristics of each scheme are evaluated and analyzed through the complementary characteristics evaluation and analysis indicators of each scheme and the obtained complementary characteristics evaluation and analysis values ​​to ensure the accuracy and rationality of the evaluation and analysis results.

[0036] 3. The present invention provides an energy efficiency evaluation and analysis method for a wind-solar complementary integrated power station. Through evaluation and analysis of technical feasibility, economic rationality, environmental benefits and social benefits, it can ensure the stable operation of the system, improve the system integration capability for efficient power generation and the society's awareness and acceptance of green energy, reduce investment risks, enhance power station market competition and the recognition and support of wind-solar complementary power generation projects from all walks of life. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the energy efficiency evaluation and analysis structure of the wind-solar complementary integrated power station of the present invention;

[0038] Figure 2 It is a structural schematic diagram of the energy efficiency evaluation and analysis method of the wind-solar complementary integrated power station of the present invention. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] like Figure 1 As shown, an energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station includes technical feasibility evaluation, economic rationality evaluation, environmental benefit evaluation and social benefit evaluation;

[0041] The technical feasibility assessment is to evaluate the selection and configuration of equipment: whether the selection of key equipment such as wind turbines and solar photovoltaic panels is reasonable and whether they are suitable for local natural conditions such as wind speed, wind direction, and solar radiation;

[0042] System integration capability: examines the integration technology level of the wind-solar hybrid system, including the design of the energy management system, the effectiveness of data collection and transmission technology, etc.;

[0043] Technology maturity: Assess the maturity of wind power generation technology and solar photovoltaic technology, as well as the development level of energy storage technology and energy management technology.

[0044] The wind-solar hybrid power generation system combines wind power and solar energy, improves operating efficiency through intelligent and Internet of Things technologies, and improves load forecasting and maximum power tracking technologies. For example, the transformation method containing parametric linear functions is used to optimize the GM (1, 1) model, which can accurately predict the load and ensure the safety and stability of the system.

[0045] like Figure 1 As shown, the economic rationality assessment is the initial investment cost: including equipment purchase, installation, land lease or purchase, infrastructure construction and other costs;

[0046] Operating costs: covering equipment maintenance, repair, replacement costs, employee salaries, insurance, taxes, etc.

[0047] Power generation and revenue: Based on local wind and solar energy resources, the annual power generation is predicted, and economic indicators such as return on investment and net present value are calculated.

[0048] The system can maintain efficient power generation in different weather conditions, balance the power generation capacity of wind and solar energy, reduce energy waste, and reduce dependence on traditional energy, thereby reducing power generation costs and improving economic benefits.

[0049] like Figure 1 As shown, the environmental benefit assessment, energy conservation and emission reduction effect assessment, and the effect of wind-solar hybrid integrated power station in reducing fossil energy consumption and greenhouse gas emissions compared with traditional power generation methods;

[0050] Ecological impact analysis: the impact of project construction and operation on the surrounding natural ecological environment, including land occupation, vegetation destruction, water resource impact, air pollution and noise pollution;

[0051] Using renewable energy to produce electricity does not produce harmful gases, reduces pollution, protects the ecological environment, and complies with the principles of sustainable development.

[0052] like Figure 1 As shown, the social benefit assessment and energy structure optimization: examine the contribution of the wind-solar hybrid integrated power station to the optimization of the local energy structure; economic development assessment, the role of the project construction in promoting local economic development, such as creating employment opportunities and promoting the development of related industries;

[0053] Social impact analysis: the impact of the project on local communities, cultural heritage, ecosystems and other social aspects.

[0054] Promoting sustainable development locally and globally to have a long-term positive impact on the local economy, society and environment

[0055] like Figure 2 As shown, an energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station includes data collection, performance evaluation indicators, simulation and prediction;

[0056] The light intensity and wind speed data are collected through meteorological stations, solar radiation measuring stations and other equipment, and real-time data are obtained using remote sensing technology or ground monitoring equipment. In terms of system operation data, the operation data of the wind-solar complementary integrated power station is collected, including power generation, equipment failure rate, and maintenance records.

[0057] like Figure 2 As shown, the performance evaluation index output and load data include data on converting solar energy of the photovoltaic panel into electrical energy. Data on wind turbines converting wind energy into electricity Overall supply load data for complementary utilization of wind and solar energy

[0058] Data on how much energy a battery or energy storage system stores and releases Make the system stable and output capacity under various weather conditions; calculate volatility index I s , expressed as,

[0059]

[0060] Climbing index I c , expressed as,

[0061]

[0062] Load tracking index I F, expressed as,

[0063]

[0064] Peak load index Among them, N t Indicates the total number of moments, It represents the average value of wind, solar and water integrated power stations; represents the change of energy efficiency output of wind-solar hybrid integrated power station at time t, f t Indicates the consistency between the energy efficiency output of the wind-solar hybrid integrated power station and the load change; They represent the maximum and minimum output differences of the energy efficiency output, wind power output and photovoltaic output of the wind-solar hybrid integrated power station respectively;

[0065] Preprocessing includes standardization of evaluation analysis, expressed as, Where n is the number of solutions; I max is the maximum value of the indicators of each scheme; I min is the minimum value of the indicators of each scheme; and the average value of the evaluation indicators of the energy efficiency and output complementary characteristics of the wind-solar hybrid integrated power station

[0066]

[0067] The column vector of force complementary characteristic evaluation value is calculated according to the weight column vector and complementary characteristic evaluation analysis index, which is expressed as: V = [V1, V2, ..., V n ] T Where V i , i=1, 2, ...n represents the complementary characteristic evaluation and analysis value of the ith scheme, and performs scheme comparative evaluation, including calculating the complementary characteristic evaluation and analysis index results and complementary characteristic evaluation values ​​of each scheme. The larger the evaluation value, the better the scheme; the smaller the evaluation index value, the better the complementary characteristics of the scheme in this aspect.

[0068] like Figure 2 As shown, by evaluating the technical value in the forecast, trend analysis is achieved, and the changing trend of wind and solar energy resources in the future is estimated based on historical data and trend forecasting models;

[0069] By using system simulation, the simulation software can simulate the operation of the wind-solar hybrid integrated power station and evaluate the energy efficiency performance under different operation strategies.

[0070] The working principle of the present invention is as follows: through the light intensity and wind speed data, data are collected through meteorological stations, solar radiation measurement stations and other equipment, and real-time data is obtained by remote sensing technology or ground monitoring equipment; when the system is running, the operating data of the wind-solar complementary integrated power station is collected, including power generation, equipment failure rate, and maintenance records; through the performance evaluation index, it is used to calculate the evaluation index of the wind-solar complementary integrated power station, and the index is pre-processed to establish a complementary characteristic evaluation index, and then used to calculate the output complementary characteristic evaluation value column vector according to the weight column vector and the complementary characteristic evaluation analysis index, and perform scheme comparison evaluation, simulation and prediction, which can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, a read-only memory (ReadOnly, Memory, ROM), a random access memory (RandomAccessMemory, RAM), a flash memory (FLASH), a hard disk or an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute each method of the present invention.

[0071] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station, characterized by: Including technical feasibility assessment, economic rationality assessment, environmental benefit assessment and social benefit assessment; The technical feasibility assessment is to evaluate the selection and configuration of equipment: whether the selection of key equipment such as wind turbines and solar photovoltaic panels is reasonable and whether they are suitable for local natural conditions such as wind speed, wind direction, and solar radiation; System integration capability: examines the integration technology level of the wind-solar hybrid system, including the design of the energy management system and the effectiveness of data collection and transmission technology; Technology maturity: Assess the maturity of wind power generation technology and solar photovoltaic technology, as well as the development level of energy storage technology and energy management technology.

2. The energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station according to claim 1 is characterized by: The economic rationality assessment is the initial investment cost: including equipment purchase, installation, land lease or purchase, infrastructure construction and other costs; Operating costs: covering equipment maintenance, repair, replacement costs, employee salaries, insurance, taxes, etc. Power generation and revenue: Based on local wind and solar energy resources, the annual power generation is predicted, and economic indicators such as return on investment and net present value are calculated.

3. The energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station according to claim 1 is characterized by: The environmental benefit assessment, energy conservation and emission reduction effect assessment, and the effect of wind-solar hybrid integrated power stations in reducing fossil energy consumption and greenhouse gas emissions compared to traditional power generation methods; Ecological impact analysis: the impact of project construction and operation on the surrounding natural ecological environment, including land occupation, vegetation destruction, water resource impact, air pollution and noise pollution.

4. The energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station according to claim 1 is characterized by: The social benefit assessment and energy structure optimization mentioned above: examine the contribution of wind-solar hybrid integrated power station to the optimization of local energy structure; Economic development assessment: the role of project construction in promoting local economic development, such as creating employment opportunities and promoting the development of related industries; Social impact analysis: the impact of the project on local communities, cultural heritage, ecosystems and other social aspects.

5. A method for energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station, based on an energy efficiency evaluation and analysis of a wind-solar hybrid integrated power station according to any one of claims 1 to 4, characterized in that: Includes data collection, performance evaluation metrics, and simulation and prediction; The light intensity and wind speed data are collected through meteorological stations, solar radiation measuring stations and other equipment, and real-time data are obtained using remote sensing technology or ground monitoring equipment. In terms of system operation data, the operation data of the wind-solar complementary integrated power station is collected, including power generation, equipment failure rate, and maintenance records.

6. The method for evaluating and analyzing the energy efficiency of a wind-solar hybrid integrated power station according to claim 5 is characterized in that: The performance evaluation index, output and load data include data on the conversion of solar energy from photovoltaic panels into electrical energy. Data on wind turbines converting wind energy into electricity Overall supply load data for complementary utilization of wind and solar energy Data on how much energy a battery or energy storage system stores and releases Make the system stable and output capacity under various weather conditions; calculate volatility index I s , expressed as, Climbing index I c , expressed as, Load tracking index I F , expressed as, Peak load index Among them, N t Indicates the total number of moments, It represents the average value of wind, solar and water integrated power stations; represents the change of energy efficiency output of wind-solar hybrid integrated power station at time t, f t Indicates the consistency between the energy efficiency output of the wind-solar hybrid integrated power station and the load change; They represent the maximum and minimum output differences of the energy efficiency output, wind power output and photovoltaic output of the wind-solar hybrid integrated power station respectively; Preprocessing includes standardization of evaluation analysis, expressed as, Where n is the number of solutions; I max is the maximum value of the indicators of each scheme; I min is the minimum value of the indicators of each scheme; and the average value of the evaluation indicators of the energy efficiency and output complementary characteristics of the wind-solar hybrid integrated power station The column vector of force complementary characteristic evaluation value is calculated according to the weight column vector and the complementary characteristic evaluation analysis index, which is expressed as: V = [V1, V2, ..., V n ] T Where V i , i=1, 2, ...n represents the complementary characteristic evaluation and analysis value of the ith scheme, and performs scheme comparative evaluation, including calculating the complementary characteristic evaluation and analysis index results and complementary characteristic evaluation values ​​of each scheme. The larger the evaluation value, the better the scheme; the smaller the evaluation index value, the better the complementary characteristics of the scheme in this aspect.

7. The method for evaluating and analyzing the energy efficiency of a wind-solar hybrid integrated power station according to claim 6 is characterized in that: Through simulation and prediction of technical values, trend analysis is achieved, and the changing trend of wind and solar energy resources in the future is estimated based on historical data and trend prediction models; By using system simulation, the simulation software can simulate the operation of the wind-solar hybrid integrated power station and evaluate the energy efficiency performance under different operation strategies.

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