A negative pressure energy storage method and system based on photovoltaic and wind power

Abstract

The present invention discloses a negative pressure energy storage method and system based on photovoltaic and wind power, which relates to the field of electric energy storage technology. The method and system include obtaining operation logs of photovoltaic and wind farms, analyzing the operation logs of photovoltaic and wind farms to obtain past operation data of photovoltaic side areas, wind power side areas, and energy storage side areas; constructing an efficiency module based on past operation data of photovoltaic side areas, wind power side areas, and energy storage side areas; coupling the efficiency module in the power allocation dimension to construct an efficiency-power mapping matrix to obtain a negative pressure energy storage model; obtaining current operation data of photovoltaic side areas and wind power side areas, inputting the current operation data of photovoltaic side areas and wind power side areas into the negative pressure energy storage model for evaluation to obtain an evaluation result; and monitoring negative pressure energy storage based on photovoltaic and wind power according to the evaluation result. The present invention realizes the monitoring of the negative pressure energy storage of photovoltaic and wind power, and improves the absorption capacity of photovoltaic and wind power and the efficiency of power plants.

Description

Technical Field

[0001] The present invention relates to the field of electric energy storage technology, and in particular to a negative pressure energy storage method and system based on photovoltaic and wind power. Background Art

[0002] Hybrid power plants based on photovoltaic and wind power combine solar photovoltaic and wind power generation technologies, comprehensively utilizing the two renewable energy sources of solar energy and wind energy to achieve more stable and efficient power output, and reduce the volatility of a single energy source through complementarity, thereby improving the stability of the overall energy supply.

[0003] Negative pressure energy storage is a new energy storage technology that utilizes negative pressure to store energy. For example, through compressed air or vacuum, this energy is stored as potential energy and then released as electricity when needed. This method offers several unique advantages over traditional energy storage technologies, including higher energy conversion efficiency, a longer service life, and environmental friendliness.

[0004] Therefore, there is an urgent need for a negative pressure energy storage method and system based on photovoltaic and wind power to monitor the negative pressure energy storage of photovoltaic and wind power, and to improve the absorption capacity of photovoltaic and wind power and the efficiency of power plants. Summary of the Invention

[0005] In order to monitor the negative pressure energy storage of photovoltaic and wind power and improve the absorption capacity and power plant efficiency of photovoltaic and wind power, this application proposes a negative pressure energy storage method and system based on photovoltaic and wind power.

[0006] A negative pressure energy storage method based on photovoltaic and wind power, comprising the following steps:

[0007] S1. Obtain the operation logs of the photovoltaic and wind farms, and analyze them to obtain past operation data of the photovoltaic, wind power, and energy storage areas.

[0008] S2. Constructing an efficiency module based on past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area; the efficiency module includes: a photovoltaic efficiency sub-module, a wind power efficiency sub-module, and a vacuum pump efficiency sub-module;

[0009] S3. Couple the efficiency module with the power distribution dimension, construct an efficiency-power mapping matrix, and obtain a negative pressure energy storage model.

[0010] S4. Obtaining current operating data of the photovoltaic side area and the wind power side area, inputting the current operating data of the photovoltaic side area and the wind power side area into the negative pressure energy storage model for evaluation, and obtaining an evaluation result;

[0011] S5. Monitor the negative pressure energy storage based on photovoltaic and wind power according to the evaluation results.

[0012] Preferably, in S1, the specific contents of the past operation data of the photovoltaic side area, the wind power side area and the energy storage side area obtained by analyzing the operation logs of the photovoltaic and wind farms are as follows:

[0013] Analyze the operation logs of photovoltaic and wind farms to obtain the initial and past operation data of the photovoltaic side area, wind power side area, and energy storage side area;

[0014] Initial past operational data from the photovoltaic side, wind power side, and energy storage side are characterized and differentiated to obtain meteorological data and equipment operational data; the meteorological data includes: irradiance, wind speed, and air density; the equipment operational data includes: total photovoltaic array area, photovoltaic DC output power, wind rotor swept area, wind power AC output power, pumping rate, pressure difference, and vacuum pump input power;

[0015] Perform data cleaning and data integration on meteorological data and equipment operation data in turn to obtain past operation data of the photovoltaic side area, past operation data of the wind power side area, and past operation data of the energy storage side area;

[0016] The past operating data of the photovoltaic side area, the past operating data of the wind power side area, and the past operating data of the energy storage side area are the past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area.

[0017] Preferably, in S2, based on the past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area, the specific content of constructing the efficiency module is as follows:

[0018] Calculate the photovoltaic conversion efficiency and fit the photovoltaic efficiency curve based on the irradiance, total photovoltaic array area and photovoltaic DC output power;

[0019] The photovoltaic efficiency curve is corrected using the least squares method to obtain the photovoltaic efficiency submodule;

[0020] Based on the Betz limit algorithm, the wind power conversion efficiency is calculated according to the air density, wind speed, rotor swept area and wind power AC output power, and the wind power efficiency curve is fitted;

[0021] Regularization is performed on the wind power efficiency curve to obtain a wind power efficiency submodule;

[0022] The vacuum pump efficiency is calculated based on the pumping rate, pressure difference and vacuum pump input power, and the vacuum pump efficiency curve is fitted by piecewise polynomial to obtain the vacuum pump sub-module;

[0023] The photovoltaic efficiency sub-module, the wind power efficiency sub-module and the vacuum pump sub-module are combined to obtain an efficiency module.

[0024] Preferably, in S3, the efficiency model is coupled with the power allocation dimension to construct an efficiency-power mapping matrix, and the specific content of the wind-solar power allocation module is obtained as follows:

[0025] Divide the power gradient into high and low to obtain several power gradient ranges;

[0026] The photovoltaic efficiency submodule and the wind power efficiency submodule are divided into intervals according to the power gradient range to obtain the photovoltaic power discrete interval and the wind power discrete interval;

[0027] The photovoltaic power discrete interval and the wind power discrete interval are numerically extracted respectively to obtain the photovoltaic power value and the wind power value;

[0028] According to the photovoltaic conversion efficiency and the wind power conversion efficiency, the weighted average conversion efficiency is calculated, and the weighted average conversion efficiency and the vacuum pump conversion efficiency are numerically extracted respectively to obtain the weighted average conversion efficiency value and the vacuum pump conversion efficiency value;

[0029] According to the vacuum pump conversion efficiency value, weighted average conversion efficiency value, photovoltaic power value and wind power value, an efficiency-power mapping matrix is ​​constructed to obtain the negative pressure energy storage model.

[0030] Preferably, the current operating data of the photovoltaic side area and the wind power side area in S4 include: current meteorological data, current photovoltaic DC output power and current wind power AC output power.

[0031] Preferably, in S4, the current operating data of the photovoltaic side area and the wind power side area are input into the negative pressure energy storage model for evaluation, and the specific content of the evaluation result is:

[0032] Determine the photovoltaic power value range and wind power power value range based on the efficiency-power mapping matrix;

[0033] Determine the vacuum pump state according to whether the current photovoltaic DC output power and the current wind power AC output power are respectively within the photovoltaic power value range and the wind power power value range; the vacuum pump state includes: the vacuum pump is running and the vacuum pump is stopped;

[0034] If the vacuum pump is running, a comprehensive evaluation of the conversion effect of the current vacuum pump is performed;

[0035] Define comprehensive evaluation criteria for vacuum pump conversion effects;

[0036] Obtain the current vacuum pump temperature value, configure the temperature emphasis conversion coefficient for the vacuum pump temperature value according to the temperature emphasis requirement in the vacuum pump conversion effect synthesis, and obtain the temperature evaluation result;

[0037] Obtain the current vacuum pump pressure value, configure the pressure emphasis conversion coefficient for the vacuum pump pressure value according to the pressure emphasis requirement in the vacuum pump conversion effect synthesis, and obtain the pressure evaluation result;

[0038] Obtain the current vibration amplitude value of the vacuum pump, configure the vibration amplitude emphasis conversion coefficient for the vibration amplitude value of the vacuum pump according to the vibration amplitude emphasis requirement in the comprehensive conversion effect of the vacuum pump, and obtain the vibration amplitude evaluation result;

[0039] Obtain the current vacuum pump efficiency value, and configure the efficiency emphasis conversion coefficient for the vacuum pump efficiency value according to the efficiency emphasis requirement in the comprehensive vacuum pump conversion effect to obtain the efficiency evaluation result;

[0040] Assign weight coefficients to the temperature evaluation results, pressure evaluation results, vibration amplitude evaluation results, and efficiency evaluation results respectively to obtain a comprehensive evaluation value;

[0041] If the comprehensive evaluation value meets the comprehensive evaluation standard of the vacuum pump conversion effect, the vacuum pump performs negative pressure energy storage.

[0042] Preferably, the specific content of determining the vacuum pump state is as follows, based on whether the current photovoltaic DC output power and the current wind power AC output power are respectively within the photovoltaic power value range and the wind power value range:

[0043] Determine the weighted average conversion efficiency value range according to the efficiency-power mapping matrix;

[0044] The current weighted average conversion efficiency value is calculated based on the current photovoltaic DC output power and the current wind power AC output power;

[0045] If the current photovoltaic DC output power and the current wind power AC output power are respectively within the photovoltaic power value range and the wind power value range, the vacuum pump is running;

[0046] If at least one of the current photovoltaic DC output power and the current wind power AC output power is within the photovoltaic power value range and the wind power value range, determining whether the current weighted average conversion efficiency value is within the weighted average conversion efficiency value range;

[0047] If the current weighted average conversion efficiency value is within the weighted average conversion efficiency value range, the vacuum pump is operated;

[0048] If the current weighted average conversion efficiency value is not within the weighted average conversion efficiency value range, the vacuum pump stops running;

[0049] If the current photovoltaic DC output power and the current wind power AC output power are both outside the photovoltaic power value range and the wind power value range, the vacuum pump stops running.

[0050] Preferably, the expression of the comprehensive evaluation value is:

[0051] ;

[0052] in, H is the comprehensive evaluation value, α is the pressure weight coefficient, is the pressure-focused conversion coefficient, P is the vacuum pump pressure value, β is the efficiency weight coefficient, b Focusing on conversion coefficient for efficiency, η is the vacuum pump efficiency value, γ is the temperature weight coefficient, c is the temperature-focused conversion coefficient, T is the vacuum pump temperature, is the vibration amplitude weight coefficient, d The focus is on the conversion coefficient for the vibration amplitude, A is the vibration amplitude of the vacuum pump.

[0053] A negative pressure energy storage system based on photovoltaic and wind power, comprising:

[0054] The data acquisition module is used to obtain the operation logs of photovoltaic and wind farms, and analyze the operation logs of photovoltaic and wind farms to obtain the past operation data of photovoltaic side area, wind power side area and energy storage side area;

[0055] A module construction module is used to construct an efficiency module based on past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area; the efficiency module includes: a photovoltaic efficiency sub-module, a wind power efficiency sub-module, and a vacuum pump efficiency sub-module;

[0056] The model building module is used to couple the efficiency module with the power distribution dimension, construct the efficiency-power mapping matrix, and obtain the negative pressure energy storage model;

[0057] An evaluation module is used to obtain the current operating data of the photovoltaic side area and the wind power side area, input the current operating data of the photovoltaic side area and the wind power side area into the negative pressure energy storage model for evaluation, and obtain an evaluation result;

[0058] The control module is used to monitor the negative pressure energy storage based on photovoltaic and wind power according to the evaluation results.

[0059] An electronic device includes a memory and a processor, wherein the memory stores a computer program, and when the processor calls the computer program in the memory, the content of the negative pressure energy storage method based on photovoltaic and wind power is implemented.

[0060] To sum up, compared with traditional technologies, the negative pressure energy storage method and system based on photovoltaic and wind power of the present invention constructs a negative pressure energy storage model, and then inputs the operating data of the current photovoltaic side area and the wind power side area into the negative pressure energy storage model for evaluation. According to the evaluation results, the negative pressure energy storage conditions of photovoltaic and wind power are monitored, which not only realizes the monitoring of the negative pressure energy storage conditions of photovoltaic and wind power, but also improves the absorption capacity of photovoltaic and wind power and the efficiency of power plants.

[0061] The technical method of the present invention is further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 This is a step diagram of a negative pressure energy storage method based on photovoltaic and wind power according to the present invention;

[0063] Figure 2 This is a module diagram of a negative pressure energy storage system based on photovoltaic and wind power in the present invention. DETAILED DESCRIPTION

[0064] The technical method of the present invention is further described below through the accompanying drawings and embodiments. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and values ​​described in these embodiments do not limit the scope of this application.

[0065] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0066] Technologies, systems, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0067] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0068] Unless otherwise defined, technical or scientific terms used in the present invention shall have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

[0069] A negative pressure energy storage method based on photovoltaic and wind power, such as Figure 1 As shown, the following steps are included:

[0070] S1. Obtain the operation logs of the photovoltaic and wind farms, and analyze the operation logs of the photovoltaic and wind farms to obtain past operation data of the photovoltaic side area, the wind power side area, and the energy storage side area.

[0071] Furthermore, the specific contents of S1 include:

[0072] The operation logs of photovoltaic and wind farms are analyzed to obtain the initial past operation data of the photovoltaic side area, wind power side area and energy storage side area.

[0073] Initial operational data from the photovoltaic, wind, and energy storage areas was characterized and distinguished to generate meteorological data and equipment operational data. Meteorological data included irradiance, wind speed, and air density; equipment operational data included total photovoltaic array area, photovoltaic DC output power, rotor swept area, wind power AC output power, pumping rate, pressure difference, and vacuum pump input power.

[0074] The meteorological data and equipment operation data are sequentially cleaned and integrated to obtain the past operation data of the photovoltaic side area, the past operation data of the wind power side area, and the past operation data of the energy storage side area.

[0075] The past operating data of the photovoltaic side area, the past operating data of the wind power side area, and the past operating data of the energy storage side area are the past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area.

[0076] S2. Based on the past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area, an efficiency module is constructed. The efficiency module includes: a photovoltaic efficiency sub-module, a wind power efficiency sub-module, and a vacuum pump efficiency sub-module.

[0077] Furthermore, the specific content of S2 is as follows:

[0078] The photovoltaic conversion efficiency is calculated based on the irradiance, the total area of ​​the photovoltaic array, and the photovoltaic DC output power, and the photovoltaic efficiency curve is fitted. The calculation formula for photovoltaic efficiency is:

[0079] ;

[0080] in, is the photovoltaic conversion efficiency, is the photovoltaic DC output power, is the irradiance, is the total area of ​​the photovoltaic array.

[0081] The photovoltaic efficiency curve is corrected using the least squares method to obtain the photovoltaic efficiency sub-module.

[0082] Based on the Betz limit algorithm, the wind power conversion efficiency is calculated according to the air density, wind speed, rotor swept area and wind power AC output power, and the wind power efficiency curve is fitted. The calculation formula of wind power conversion efficiency is:

[0083] ;

[0084] in, is the wind power conversion efficiency, is the wind power AC output power, is the air density, is the swept area of ​​the wind wheel, is the wind speed.

[0085] Regularization is performed on the wind power efficiency curve to obtain the wind power efficiency sub-module.

[0086] The vacuum pump efficiency is calculated based on the pumping rate, pressure difference and vacuum pump input power. The vacuum pump efficiency curve is fitted by piecewise polynomial to obtain the vacuum pump sub-module. The calculation formula of the vacuum pump efficiency is:

[0087] ;

[0088] in, is the vacuum pump efficiency, is the pumping rate, is the pressure difference, Enter power for the vacuum pump.

[0089] The photovoltaic efficiency sub-module, the wind power efficiency sub-module and the vacuum pump sub-module are combined to obtain an efficiency module.

[0090] S3. Couple the efficiency module in the power distribution dimension, construct the efficiency-power mapping matrix, and obtain the negative pressure energy storage model.

[0091] Furthermore, the specific content of S3 is:

[0092] The power gradients are divided into high and low to obtain several power gradient ranges.

[0093] The photovoltaic efficiency submodule and the wind power efficiency submodule are divided into intervals according to the power gradient range to obtain the photovoltaic power discrete interval and the wind power discrete interval.

[0094] The photovoltaic power discrete interval and the wind power discrete interval are numerically extracted respectively to obtain the photovoltaic power value and the wind power value.

[0095] According to the photovoltaic conversion efficiency and wind power conversion efficiency, the weighted average conversion efficiency is calculated, and the weighted average conversion efficiency and vacuum pump conversion efficiency are numerically extracted to obtain the weighted average conversion efficiency value and vacuum pump conversion efficiency value. The calculation formula of the weighted average conversion efficiency is:

[0096] ;

[0097] in, is the weighted average conversion efficiency value, is the weight coefficient corresponding to the photovoltaic conversion efficiency, is the weight coefficient corresponding to the wind power conversion efficiency.

[0098] According to the vacuum pump conversion efficiency value, weighted average conversion efficiency value, photovoltaic power value and wind power value, an efficiency-power mapping matrix is ​​constructed to obtain the negative pressure energy storage model.

[0099] S4. Obtaining current operating data for the photovoltaic and wind power areas, and inputting the current operating data for the photovoltaic and wind power areas into the negative pressure energy storage model for evaluation to obtain an evaluation result. The current operating data for the photovoltaic and wind power areas includes: current meteorological data, current photovoltaic DC output power, and current wind power AC output power.

[0100] Furthermore, in S4, the current operating data of the photovoltaic side area and the wind power side area are input into the negative pressure energy storage model for evaluation, and the specific content of the evaluation results is as follows:

[0101] According to the efficiency-power mapping matrix, the photovoltaic power value range and the wind power power value range are determined.

[0102] The vacuum pump status is determined based on whether the current photovoltaic DC output power and the current wind power AC output power are within the photovoltaic power value range and the wind power value range, respectively, as follows:

[0103] According to the efficiency-power mapping matrix, the weighted average conversion efficiency value range is determined.

[0104] The current weighted average conversion efficiency value is calculated based on the current photovoltaic DC output power and the current wind power AC output power.

[0105] If the current photovoltaic DC output power and the current wind power AC output power are respectively within the photovoltaic power value range and the wind power value range, the vacuum pump is operated.

[0106] If at least one of the current photovoltaic DC output power and the current wind power AC output power is within the photovoltaic power value range and the wind power value range, it is determined whether the current weighted average conversion efficiency value is within the weighted average conversion efficiency value range.

[0107] If the current weighted average conversion efficiency value is within the weighted average conversion efficiency value range, the vacuum pump operates.

[0108] If the current weighted average conversion efficiency value is not within the weighted average conversion efficiency value range, the vacuum pump stops running.

[0109] If the current photovoltaic DC output power and the current wind power AC output power are both outside the photovoltaic power value range and the wind power value range, the vacuum pump stops running.

[0110] If the vacuum pump is running, a comprehensive evaluation of the conversion effect of the current vacuum pump is performed.

[0111] Define the comprehensive evaluation criteria for vacuum pump conversion effects.

[0112] Obtain the current vacuum pump temperature value, configure the temperature emphasis conversion coefficient for the vacuum pump temperature value according to the temperature emphasis requirements in the vacuum pump conversion effect synthesis, and obtain the temperature evaluation result.

[0113] Obtain the current vacuum pump pressure value, configure the pressure emphasis conversion coefficient for the vacuum pump pressure value according to the pressure emphasis requirement in the vacuum pump conversion effect synthesis, and obtain the pressure evaluation result.

[0114] The current vibration amplitude value of the vacuum pump is obtained. According to the vibration amplitude emphasis requirement in the comprehensive conversion effect of the vacuum pump, a vibration amplitude emphasis conversion coefficient is configured for the vibration amplitude value of the vacuum pump to obtain a vibration amplitude evaluation result.

[0115] The current vacuum pump efficiency value is obtained. According to the efficiency emphasis requirement in the comprehensive vacuum pump conversion effect, the efficiency emphasis conversion coefficient is configured for the vacuum pump efficiency value to obtain the efficiency evaluation result.

[0116] The weight coefficients are configured for the temperature evaluation results, pressure evaluation results, vibration amplitude evaluation results and efficiency evaluation results respectively to obtain the comprehensive evaluation value. The expression of the comprehensive evaluation value is:

[0117] ;

[0118] in, H is the comprehensive evaluation value, α is the pressure weight coefficient, is the pressure-focused conversion coefficient, P is the vacuum pump pressure value, β is the efficiency weight coefficient, b Focusing on conversion coefficient for efficiency, η is the vacuum pump efficiency value, γ is the temperature weight coefficient, c is the temperature-focused conversion coefficient, T is the vacuum pump temperature, is the vibration amplitude weight coefficient, d The focus is on the conversion coefficient for the vibration amplitude, A is the vibration amplitude of the vacuum pump.

[0119] If the comprehensive evaluation value meets the comprehensive evaluation standard of the vacuum pump conversion effect, the vacuum pump performs negative pressure energy storage.

[0120] S5. Monitor the negative pressure energy storage based on photovoltaic and wind power according to the evaluation results.

[0121] A negative pressure energy storage system based on photovoltaic and wind power, such as Figure 2 Shown, including:

[0122] The data acquisition module is used to obtain the operation logs of photovoltaic and wind farms, and analyze the operation logs of photovoltaic and wind farms to obtain the past operation data of photovoltaic side area, wind power side area and energy storage side area.

[0123] The module construction module is used to build an efficiency module based on past operating data from the photovoltaic, wind power, and energy storage areas. The efficiency module includes: a photovoltaic efficiency sub-module, a wind power efficiency sub-module, and a vacuum pump efficiency sub-module.

[0124] The model building module is used to couple the efficiency module in the power distribution dimension, construct the efficiency-power mapping matrix, and obtain the negative pressure energy storage model.

[0125] The evaluation module is used to obtain the current operating data of the photovoltaic side area and the wind power side area, input the current operating data of the photovoltaic side area and the wind power side area into the negative pressure energy storage model for evaluation, and obtain the evaluation results.

[0126] The control module is used to monitor the negative pressure energy storage based on photovoltaic and wind power according to the evaluation results.

[0127] An electronic device includes a memory and a processor. The memory stores a computer program. When the processor calls the computer program in the memory, the content of the negative pressure energy storage method based on photovoltaic and wind power is implemented.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical method of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical method to deviate from the spirit and scope of the technical method of the present invention.

Claims

1. A negative pressure energy storage method based on photovoltaic and wind power, characterized in that: The following steps are involved: S1. Obtain the operation logs of the photovoltaic and wind farms, and analyze them to obtain past operation data of the photovoltaic, wind power, and energy storage areas. S2. Constructing an efficiency module based on past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area; the efficiency module includes: a photovoltaic efficiency sub-module, a wind power efficiency sub-module, and a vacuum pump efficiency sub-module; S3. Couple the efficiency module with the power distribution dimension, construct an efficiency-power mapping matrix, and obtain a negative pressure energy storage model. S4. Obtaining current operating data of the photovoltaic side area and the wind power side area, inputting the current operating data of the photovoltaic side area and the wind power side area into the negative pressure energy storage model for evaluation, and obtaining an evaluation result; S5. Monitor the negative pressure energy storage based on photovoltaic and wind power according to the evaluation results; In S2, based on the past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area, the specific contents of the efficiency module are as follows: Calculate the photovoltaic conversion efficiency and fit the photovoltaic efficiency curve based on the irradiance, total photovoltaic array area and photovoltaic DC output power; The photovoltaic efficiency curve is corrected using the least squares method to obtain the photovoltaic efficiency submodule; Based on the Betz limit algorithm, the wind power conversion efficiency is calculated according to the air density, wind speed, rotor swept area and wind power AC output power, and the wind power efficiency curve is fitted; Regularization is performed on the wind power efficiency curve to obtain a wind power efficiency submodule; The vacuum pump efficiency is calculated based on the pumping rate, pressure difference and vacuum pump input power, and the vacuum pump efficiency curve is fitted by piecewise polynomial to obtain the vacuum pump sub-module; Combining the photovoltaic efficiency sub-module, the wind power efficiency sub-module and the vacuum pump sub-module to obtain an efficiency module; In S3, the efficiency model is coupled with the power distribution dimension to construct an efficiency-power mapping matrix. The specific content of the wind-solar power distribution module is obtained as follows: Divide the power gradient into high and low to obtain several power gradient ranges; The photovoltaic efficiency submodule and the wind power efficiency submodule are divided into intervals according to the power gradient range to obtain the photovoltaic power discrete interval and the wind power discrete interval; The photovoltaic power discrete interval and the wind power discrete interval are numerically extracted respectively to obtain the photovoltaic power value and the wind power value; According to the photovoltaic conversion efficiency and the wind power conversion efficiency, the weighted average conversion efficiency is calculated, and the weighted average conversion efficiency and the vacuum pump conversion efficiency are numerically extracted respectively to obtain the weighted average conversion efficiency value and the vacuum pump conversion efficiency value; According to the vacuum pump conversion efficiency value, weighted average conversion efficiency value, photovoltaic power value and wind power value, an efficiency-power mapping matrix is ​​constructed to obtain the negative pressure energy storage model.

2. A negative pressure energy storage method based on photovoltaic and wind power according to claim 1, characterized in that: In S1, the operation logs of the photovoltaic and wind farms are analyzed to obtain the following operating data for the photovoltaic, wind power, and energy storage areas: Analyze the operation logs of photovoltaic and wind farms to obtain the initial and past operation data of the photovoltaic side area, wind power side area, and energy storage side area; Initial past operational data from the photovoltaic side, wind power side, and energy storage side are characterized and differentiated to obtain meteorological data and equipment operational data; the meteorological data includes: irradiance, wind speed, and air density; the equipment operational data includes: total photovoltaic array area, photovoltaic DC output power, wind rotor swept area, wind power AC output power, pumping rate, pressure difference, and vacuum pump input power; Perform data cleaning and data integration on meteorological data and equipment operation data in turn to obtain past operation data of the photovoltaic side area, past operation data of the wind power side area, and past operation data of the energy storage side area; The past operating data of the photovoltaic side area, the past operating data of the wind power side area, and the past operating data of the energy storage side area are the past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area.

3. The negative pressure energy storage method based on photovoltaic and wind power according to claim 1, characterized in that: The current operating data of the photovoltaic side area and the wind power side area in S4 include: current meteorological data, current photovoltaic DC output power and current wind power AC output power.

4. The negative pressure energy storage method based on photovoltaic and wind power according to claim 1, characterized in that: In S4, the current operating data of the photovoltaic side area and the wind power side area are input into the negative pressure energy storage model for evaluation. The specific content of the evaluation results is as follows: Determine the photovoltaic power value range and wind power power value range based on the efficiency-power mapping matrix; Determine the vacuum pump state according to whether the current photovoltaic DC output power and the current wind power AC output power are respectively within the photovoltaic power value range and the wind power power value range; the vacuum pump state includes: the vacuum pump is running and the vacuum pump is stopped; If the vacuum pump is running, a comprehensive evaluation of the conversion effect of the current vacuum pump is performed; Define comprehensive evaluation criteria for vacuum pump conversion effects; Obtain the current vacuum pump temperature value, configure the temperature emphasis conversion coefficient for the vacuum pump temperature value according to the temperature emphasis requirement in the vacuum pump conversion effect synthesis, and obtain the temperature evaluation result; Obtain the current vacuum pump pressure value, configure the pressure emphasis conversion coefficient for the vacuum pump pressure value according to the pressure emphasis requirement in the vacuum pump conversion effect synthesis, and obtain the pressure evaluation result; Obtain the current vibration amplitude value of the vacuum pump, configure the vibration amplitude emphasis conversion coefficient for the vibration amplitude value of the vacuum pump according to the vibration amplitude emphasis requirement in the comprehensive conversion effect of the vacuum pump, and obtain the vibration amplitude evaluation result; Obtain the current vacuum pump efficiency value, and configure the efficiency emphasis conversion coefficient for the vacuum pump efficiency value according to the efficiency emphasis requirement in the comprehensive vacuum pump conversion effect to obtain the efficiency evaluation result; Assign weight coefficients to the temperature evaluation results, pressure evaluation results, vibration amplitude evaluation results, and efficiency evaluation results respectively to obtain a comprehensive evaluation value; If the comprehensive evaluation value meets the comprehensive evaluation standard of the vacuum pump conversion effect, the vacuum pump performs negative pressure energy storage.

5. A negative pressure energy storage method based on photovoltaic and wind power according to claim 4, characterized in that: The specific contents of determining the vacuum pump status are as follows: Determine the weighted average conversion efficiency value range according to the efficiency-power mapping matrix; The current weighted average conversion efficiency value is calculated based on the current photovoltaic DC output power and the current wind power AC output power; If the current photovoltaic DC output power and the current wind power AC output power are respectively within the photovoltaic power value range and the wind power value range, the vacuum pump is running; If at least one of the current photovoltaic DC output power and the current wind power AC output power is within the photovoltaic power value range and the wind power value range, determining whether the current weighted average conversion efficiency value is within the weighted average conversion efficiency value range; If the current weighted average conversion efficiency value is within the weighted average conversion efficiency value range, the vacuum pump is operated; If the current weighted average conversion efficiency value is not within the weighted average conversion efficiency value range, the vacuum pump stops running; If the current photovoltaic DC output power and the current wind power AC output power are both outside the photovoltaic power value range and the wind power value range, the vacuum pump stops running.

6. A negative pressure energy storage method based on photovoltaic and wind power according to claim 5, characterized in that: The expression of the comprehensive evaluation value is: ； in, is the comprehensive evaluation value, is the pressure weight coefficient, is the pressure-focused conversion coefficient, is the vacuum pump pressure value, is the efficiency weight coefficient, Focusing on conversion coefficient for efficiency, is the vacuum pump efficiency value, is the temperature weight coefficient, is the temperature-focused conversion coefficient, is the vacuum pump temperature, is the vibration amplitude weight coefficient, The focus is on the conversion coefficient for the vibration amplitude, is the vibration amplitude of the vacuum pump.

7. A negative pressure energy storage system based on photovoltaic and wind power, characterized in that: include: The data acquisition module is used to obtain the operation logs of photovoltaic and wind farms, and analyze the operation logs of photovoltaic and wind farms to obtain the past operation data of photovoltaic side area, wind power side area and energy storage side area; A module construction module is used to construct an efficiency module based on past operating data of the photovoltaic side area, the wind power side area, and the energy storage side area; the efficiency module includes: a photovoltaic efficiency sub-module, a wind power efficiency sub-module, and a vacuum pump efficiency sub-module; Based on past operational data from the photovoltaic, wind power, and energy storage areas, the specific contents of building the efficiency module are as follows: Calculate the photovoltaic conversion efficiency and fit the photovoltaic efficiency curve based on the irradiance, total photovoltaic array area and photovoltaic DC output power; The photovoltaic efficiency curve is corrected using the least squares method to obtain the photovoltaic efficiency submodule; Based on the Betz limit algorithm, the wind power conversion efficiency is calculated according to the air density, wind speed, rotor swept area and wind power AC output power, and the wind power efficiency curve is fitted; Regularization is performed on the wind power efficiency curve to obtain a wind power efficiency submodule; The vacuum pump efficiency is calculated based on the pumping rate, pressure difference and vacuum pump input power, and the vacuum pump efficiency curve is fitted by piecewise polynomial to obtain the vacuum pump sub-module; Combining the photovoltaic efficiency sub-module, the wind power efficiency sub-module and the vacuum pump sub-module to obtain an efficiency module; The model building module is used to couple the efficiency module with the power distribution dimension, construct the efficiency-power mapping matrix, and obtain the negative pressure energy storage model; The efficiency model is coupled with the power distribution dimension to construct the efficiency-power mapping matrix. The specific content of the wind-solar power distribution module is obtained as follows: Divide the power gradient into high and low to obtain several power gradient ranges; The photovoltaic efficiency submodule and the wind power efficiency submodule are divided into intervals according to the power gradient range to obtain the photovoltaic power discrete interval and the wind power discrete interval; The photovoltaic power discrete interval and the wind power discrete interval are numerically extracted respectively to obtain the photovoltaic power value and the wind power value; According to the photovoltaic conversion efficiency and the wind power conversion efficiency, the weighted average conversion efficiency is calculated, and the weighted average conversion efficiency and the vacuum pump conversion efficiency are numerically extracted respectively to obtain the weighted average conversion efficiency value and the vacuum pump conversion efficiency value; According to the vacuum pump conversion efficiency value, weighted average conversion efficiency value, photovoltaic power value and wind power value, an efficiency-power mapping matrix is ​​constructed to obtain a negative pressure energy storage model. An evaluation module is used to obtain the current operating data of the photovoltaic side area and the wind power side area, input the current operating data of the photovoltaic side area and the wind power side area into the negative pressure energy storage model for evaluation, and obtain an evaluation result; The control module is used to monitor the negative pressure energy storage based on photovoltaic and wind power according to the evaluation results.

8. An electronic device, characterized in that: It includes a memory and a processor, wherein the memory stores a computer program, and when the processor calls the computer program in the memory, it implements the content of the negative pressure energy storage method based on photovoltaic power and wind power as claimed in any one of claims 1 to 6.

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