CN106295134A - Energy storage technology and the coupling analytical method of energy storage standard - Google Patents

Abstract

The invention provides a coupling analysis method of energy storage technology and energy storage standards, including: determining the evaluation index and weight of energy storage technology to form an evaluation index system of energy storage technology; determining the evaluation index and weight of energy storage standards to form an energy storage standard Evaluation index system; establish a coupling model of energy storage technology and energy storage standards; standardize the original data and substitute it into the coupling function for calculation; compare and analyze the calculation results with reference to the corresponding standards. The coupling analysis method in the present invention establishes a coupling model between energy storage technology and energy storage standards, greatly reduces the computational complexity of energy storage technology and energy storage standard coupling analysis, and greatly improves calculation efficiency. Being able to quickly and accurately find out the problems that affect the development of my country's energy storage industry and put forward suggestions for the development direction of the energy storage industry will help my country's energy storage technology and energy storage standards to coordinate and quickly reach the world's leading level.

Description

Coupling Analysis Method of Energy Storage Technology and Energy Storage Standards

technical field

The invention relates to a coupling analysis method, in particular to a coupling analysis method of an energy storage technology and an energy storage standard.

Background technique

my country's research on energy storage technology started relatively late compared with Europe, the United States and Japan. In recent years, the country has paid more and more attention to this field. However, due to my country's unsound energy storage technology standards, my country's energy storage device production and application links Both lack support and cannot meet application requirements. With the deepening of research, new technologies and new application scenarios will continue to emerge, and the coupling relationship between the development of energy storage technology and standards will also show dynamic changes. In view of the fact that neither the energy storage technology itself nor the formulation of energy storage standards is mature enough, there is a large room for development. In order to improve the pertinence of energy storage standards and consolidate the technological advancement of energy storage standards, it is necessary to improve Analyze coupling relationships. By analyzing the coupling relationship between the development of energy storage technology and energy storage standards, it will be beneficial to the establishment of my country's energy storage standard system and the formulation of energy storage standards. The establishment of energy storage standards will ensure the healthy development of the energy storage industry and further promote the progress and innovation of energy storage technology. The benign dynamic development process of the two will be the result expected by the industry.

The coupling analysis of energy storage technology and energy storage standards involves the establishment of evaluation systems and evaluation models, but domestic research on this aspect is still blank. For the coupling analysis of the two, the technical problem that needs to be solved urgently is to determine the evaluation index in the evaluation system and the evaluation function in the evaluation model after deeply understanding the current energy storage technology, energy storage standard development status, development trend and development demand .

Contents of the invention

In view of the defects in the prior art, the purpose of the present invention is to provide a coupling analysis method of energy storage technology and energy storage standards.

According to the coupling analysis method of energy storage technology and energy storage standard provided by the present invention, it includes the following steps:

Step 1: Establish the evaluation index system of energy storage technology. According to the principle of scientific and standardized construction of the index system, combined with the development status of energy storage technology, the evaluation index system of energy storage technology is divided into technical index system, economic index system and environmental protection index system. There are three categories of influential index systems;

Step 2: Establish an evaluation index system for energy storage standards, the evaluation system includes: technical level subsystem, coordination supporting subsystem, structure and content subsystem, and application degree subsystem;

Step 3: standardize the raw data;

Step 4: Substitute the processed data into the coupling function for calculation, obtain the values of coupling degree and coupling coordination degree, and analyze the coupling relationship between energy storage technology and energy storage standards.

Preferably, the step 3 includes: scaling the data according to a set ratio, so that the data falls into a smaller specific interval, here the 0-1 interval is used, that is, the values of all data are between 0-1, and It is a dimensionless pure value; the formula for specific processing is as follows:

Standardization of positive indicators:

Normalization of negative indicators:

In the formula, x _i ' represents the standard value of the i-th original index, x _i represents the original data of the i-th index, and x _max and x _min represent the maximum and minimum values of the original index, respectively.

Preferably, the calculation process using the coupling function in the step 4 is as follows:

${\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; =</span>\underset{\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; m</span>}}{<span\; class="notranslate">\; \&Sigma;</span>}}{\mathrm{<span\; class="notranslate">\; w</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}$

Where: i=1,2

$\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; =</span>{<span\; class="notranslate">\; \&lsqb;</span>\frac{{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{{<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; \&rsqb;</span>}^{\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; ;</span>$

T=αu ₁ +βu ₂ ;

$\mathrm{<span\; class="notranslate">\; D.</span>}<span\; class="notranslate">\; =</span>\sqrt{\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; \&times;</span>\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; ;</span>$

In the formula: u ₁ , u ₂ represent the evaluation levels of energy storage technology and energy storage standards respectively, u _1j , u _2j represent the value of the jth index in the energy storage technology evaluation system and energy storage standard evaluation system respectively, w _1j , w _2j respectively represent the weight of the jth index in the energy storage technology evaluation system and the energy storage standard evaluation system, C represents the coupling degree of u ₁ and u ₂ , C∈[0,1]; the larger the value of C, the greater the energy storage The better the coupling between the technology and the energy storage standard, when C=0, it means that the two are in an unrelated state; when C=1, it means that the two are in the best coupling state; T represents the energy storage technology and energy storage standard. Comprehensive evaluation index, α and β are undetermined coefficients, which can be determined according to the importance of technology and standards; D represents the degree of coupling coordination, D∈[0,1], the larger the value of D, the greater the energy storage technology and energy storage standard The higher the level of overall coupling development.

Preferably, α=0.6 and β=0.4 are set according to the importance of technology and standards.

Preferably, the technical index system in step 1 includes: four sub-indices of capacity, density, service life, and efficiency; the economical index system includes: three sub-indices of initial investment, fixed operation and maintenance cost, and variable operation and maintenance cost; The impact index system on the environment includes: two sub-indices of safety and environmental protection;

Among them: safety is used to evaluate the safety and stability of energy storage technology operation, and environmental protection is used to evaluate whether an energy storage technology is green and environmentally friendly, whether it will pollute the environment or affect the ecological environment.

Preferably, step 5 is also included: formulate corresponding energy storage standards according to the coupling relationship between energy storage technology and energy storage standards obtained in step 4.

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

The coupling analysis method in the present invention establishes an evaluation system and an evaluation model for the coupling analysis of energy storage technology and energy storage standards, fills the technical gap in this area in our country, and provides a reference for others to conduct subsequent related research; the coupling analysis method It greatly simplifies the coupling analysis process between the two, reduces the computational complexity, and helps to intuitively discover the problems existing in the development of my country's energy storage industry, facilitates subsequent targeted research, and is conducive to promoting energy storage technology and energy storage. Standards are moving in the direction of collaborative coupling relationships.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is a schematic flow chart of the coupling analysis method of energy technology and energy storage standard provided by the present invention;

Figure 2 is a schematic diagram of the energy storage technology evaluation index system;

Figure 3 is a schematic diagram of the weight setting of energy storage technical indicators;

Figure 4 is a schematic diagram of the energy storage standard evaluation index system;

Figure 5 is a schematic diagram of the weight setting of energy storage standard indicators.

detailed description

The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

According to the coupling analysis method of energy storage technology and energy storage standard provided by the present invention, it includes the following steps:

Step 1: Establish the evaluation index system of energy storage technology. According to the principle of scientific and standardized construction of the index system, combined with the development status of energy storage technology, the evaluation index system of energy storage technology is divided into technical A, economical B and impact on the environment C three categories.

Among them, the technical indicators include four sub-indices of capacity A1, density A2, life A3, and efficiency A4, which evaluate some basic technical characteristics of energy storage technology; economic indicators include initial investment B1, fixed operation and maintenance costs B2 and variable The three sub-indices of operation and maintenance cost B3 are for economical evaluation of energy storage technology; the impact on the environment includes two sub-indices of safety C1 and environmental protection C2. Safety is mainly to evaluate the safety and stability of energy storage technology operation, and environmental protection is mainly Evaluate whether an energy storage technology is green and environmentally friendly, whether it pollutes the environment or affects the ecological environment. The evaluation index system of energy storage technology is shown in Figure 2. In practical application, the weight setting of each index can be obtained after comprehensive research and determination of the relative importance of each influencing factor through various channels such as expert seminars, manufacturer questionnaire surveys, and user feedback. The weight setting of each index is temporarily set as shown in Figure 3 shown.

Step 2: Establish an energy storage standard evaluation index system, which is determined by combining the analytic hierarchy process and expert consultation method. The evaluation system is divided into four subsystems: technical level A, coordination and matching B, structure and content C, and application level D.

Among them, the category of technical level includes adaptability A1 compared with the production level in my country, which examines whether the technical level stipulated in the standard is suitable for comparison with the current mainstream research level, design level, process level, production level, etc. in the field of energy storage in my country; Advancedness A2 compared with the international standard level, which examines whether the overall technical level of my country's energy storage standards is advanced compared with the international standard level; structure and content include structural rationality C1, this indicator only examines the standard from the perspective of whether it needs to be integrated Institutional rationality; content rationality C2 focuses on the problems existing in the technical content of energy storage standards. The application degree D indicator mainly examines how many users the standard is currently using. The energy storage standard evaluation system is shown in Figure 4. The weight setting of each indicator is still determined by the expert consultation method, and the weight setting of each indicator is shown in Figure 5.

Step 3: Standardize the original data. The evaluation index system of energy storage technology and energy storage standards is composed of several indexes. Due to the different nature of each evaluation index, these indexes have different dimensions and orders of magnitude. When the levels of various indicators differ greatly, if the original indicator values are directly used for analysis, the role of indicators with higher numerical levels in the comprehensive analysis will be highlighted, and the role of indicators with lower numerical levels will be relatively weakened. Therefore, in order to ensure the reliability of the results, the data should first be standardized before being brought into the coupled model calculation.

The data standardization processing in step 3 is to scale the data according to a certain ratio so that it falls into a small specific interval. A commonly used method is to fall into the 0-1 interval, which is also called the normalization of data. Its formula is as follows:

Standardization of positive indicators:

Normalization of negative indicators:

Among them, x _i ' represents the standard value of the original index, x _i represents the original data of the index, x _max and x _min represent the maximum value and minimum value of the original index, respectively. It can be seen from the formula that after the normalization of the data, the values of all indicators are between 0 and 1, and they are dimensionless pure values, which is convenient for weighted calculation of the data in the subsequent case analysis.

Step 4: Coupling calculation analysis. Substitute the processed data into the coupling function for calculation, and analyze the results.

The analysis of the coupling function in the step 4 is as follows:

Let u ₁ and u ₂ represent the evaluation levels of energy storage technology and energy storage standards respectively, and let u _1j and u _2j represent the value of the jth index of the energy storage technology evaluation system and energy storage standard evaluation system respectively. The index standardization formula is calculated, let w _1j and w _2j denote the weight of the jth index in the energy storage technology evaluation system and the energy storage standard evaluation system respectively. Then, the linear weighting method can be used to calculate the energy storage technology and energy storage standard level:

${\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; =</span>{<span\; class="notranslate">\; \&Sigma;</span>}_{\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}^{\mathrm{<span\; class="notranslate">\; m</span>}}{\mathrm{<span\; class="notranslate">\; w</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; ,</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; )</span>$

The comprehensive development levels u ₁ and u ₂ of energy storage technology and energy storage standards can be obtained respectively, based on which the coupling function calculation between the two can be performed.

Referring to the coupling degree function in physics, and on the basis of related research, the coupling degree formula between energy storage technology and energy storage standards is given as:

$\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; =</span>{<span\; class="notranslate">\; \&lsqb;</span>\frac{{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{{<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; \&rsqb;</span>}^{\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 4</span>}<span\; class="notranslate">\; )</span>$

T=αu ₁ +βu ₂ (5)

$\mathrm{<span\; class="notranslate">\; D.</span>}<span\; class="notranslate">\; =</span>\sqrt{\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; \&times;</span>\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; -</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; 6</span>}<span\; class="notranslate">\; )</span>$

Among them, C represents the degree of coupling between the two, C∈[0,1], and the larger the degree of coupling between the energy storage technology and the energy storage standard, the better the coupling degree between the energy storage technology and the energy storage standard. When C=0, it means that the two are in an unrelated state; when When C=1, it shows that the two are in the best coupling state. T is the comprehensive evaluation index of energy storage technology and energy storage standards, which reflects the overall development level of the energy storage industry. α and β are undetermined coefficients. According to the importance of technology and standards, α=0.6 and β=0.4 are tentatively determined. This value reflects that in the development process of the energy storage industry, the importance of energy storage technology is slightly greater than the energy storage standard, and it can be adjusted according to the actual judgment standard. D is the coupling coordination degree. Since the coupling degree can only indicate the strength of the interaction between the two systems, it cannot reflect the level of coordinated development of the entire system. Therefore, the coupling coordination theory is introduced to evaluate the coupling coordination degree of the two systems. It reflects the overall coordinated development level of the interaction coupling between energy storage technology and energy storage standards in my country. D∈[0,1], the larger the value of D, the higher the overall coupling development degree of energy storage technology and energy storage level, which effectively avoids the difficulty of obtaining a high coupling value with low energy storage technology level and low energy storage standard level. Reflect the disadvantages of energy storage technology and the overall level of standards.

Example

According to the energy storage technology evaluation system, energy storage standard evaluation system and coupling model established above, the coupling degree between energy storage technology and energy storage standards is calculated by using the collected relevant data.

Due to the short development time of energy storage technology and the lack of relevant data at home and abroad, but the project research is more focused on the proposal of the model and the idea of solving the problem, so the following will temporarily use the currently collected data as an example to demonstrate the method, in order to be able to It provides a reference for future energy storage promotion and application and relevant research under the condition of continuous enrichment of data.

(1) First, evaluate the energy storage technology. Here, we choose to evaluate the six current mainstream energy storage technologies of pumped water storage, battery energy storage, flywheel energy storage, superconducting magnetic energy storage, supercapacitor energy storage, and compressed air energy storage, and then take the average value as the energy storage technology The final evaluation result of the system. The collected raw data are shown in Table 1.

Table 1 Raw data of energy storage technology

After standardizing the original data and processing the processed data according to the weight of each indicator, the results are shown in Table 2:

Table 2 Evaluation indicators of energy storage technology after standardized treatment

Capacity (MW) Energy density (Wh/kg) Lifespan (years) efficiency(%) Variable O&M cost ($/kw.h) Fixed O&M cost ($/kw.yr) Investment cost ($/kw) Security (1-5) Environmental protection Evaluation results pumped storage 1 0.0001 0.4 0.4 1 1 1 0 0.5 0.686202 compressed air 0.001 0 1 0 0.9385 0.9798 0 1 0.25 0.318038 storage battery 0 1 0 0.4 0.9744 0 1 0.5 0 0.342891 flywheel 0 0.7894 0.2 0.8 0.8205 0.9949 0.9929 1 1 0.533304 superconducting 0 0.0259 0 0.92 0 0.9596 1 1 1 0.390622 Super capacitor 0 0.0259 0 1 0.7692 0.999 1 1 1 0.417839 Weights 0.2907 0.1156 0.1722 0.0359 0.0281 0.0693 0.1709 0.0293 0.0879

Taking the average value of the evaluation results of the six energy storage technologies, the comprehensive evaluation result of the energy storage technologies is u ₁ =0.4481.

(2) Then, evaluate the energy storage standard. Temporarily select the representative "Technical Regulations for Energy Storage System Connected to Distribution Network", "Test Specifications for Energy Storage System Connected to Distribution Network" and "Energy Storage System Connected to Power Distribution Network" that have been formulated in my country in the field of energy storage. The three standards of the Grid Operation Control Specification are used as objects, and the evaluation is carried out separately, and then the average value of the evaluation results is taken as the comprehensive evaluation result of the energy storage standard system. Using the expert scoring method and referring to the evaluation requirements of the relevant technical standard system, the evaluation value of each index of the energy storage standard is determined, and the results are shown in Table 3 after standardizing the data.

Table 3 Standardized evaluation indicators of energy storage standards

adaptability Advancement Coordination Structural rationality content rationality application level Evaluation results technical regulations 0.7 0.6 0.8 0.8 0.6 0.8 0.715 Test Specification 0.8 0.6 0.8 0.8 0.7 0.7 0.73 run control rules Fan 0.7 0.5 0.8 0.8 0.6 0.8 0.7 Weights 0.15 0.15 0.15 0.15 0.2 0.2

The evaluation results of the above three standards are averaged, and the comprehensive evaluation result of the energy storage standard is u ₂ =0.715. After obtaining the evaluation values of the energy storage technology system and the energy storage standard system, according to the coupling model, the coupling degree C=0.9733, the comprehensive evaluation index T=0.5549, and the coupling coordination degree D=0.7349 can be obtained.

The result of the evaluation index u ₁ =0.4481 of the energy storage technology system directly reflects the current situation that China’s energy storage technology is not yet mature enough. The calculation results in Table 2 show that only the pumped energy storage technology is relatively mature and can reach degree of commercialization.

As for the result of the energy storage standard system evaluation index u ₂ =0.715, it should be analyzed more objectively. The value of this index does not mean that China is already very advanced in the field of energy storage standards. It is not difficult to see from the specific values of each index that These standards are highly evaluated in terms of application degree, coordination and matching, and structural rationality, but low in evaluation of content rationality, and relatively low in advanced evaluation compared with international standards.

At present, only from the calculation results of the coupling degree, the coupling between the energy storage technology system and the energy storage standard system is still relatively high, but in terms of the comprehensive evaluation index, my country's energy storage industry is still at a relatively low level of development. Level. The absolute grade evaluation criteria of the coupling coordination degree between the energy storage technology system and the energy storage standard system are shown in Table 4.

Table 4 Absolute grade evaluation table of coupling coordination degree

Coupling coordination degree (D) coordination level 0≤D﹤0.1 extremely disordered 0.1≤D﹤0.2 severe disorder 0.2≤D﹤0.3 moderate disorder 0.3≤D﹤0.4 mild disorder 0.4≤D﹤0.5 On the verge of disorder 0.5≤D﹤0.6 Barely coordinated 0.6≤D﹤0.7 Junior Coordinator 0.7≤D﹤0.8 Intermediate Coordinator 0.8≤D﹤0.9 well coordinated 0.9≤D﹤1 High quality coordination

Compared with the calculated coupling coordination degree of energy storage technology and energy storage standard D=0.7349, it can be seen from the absolute grade evaluation standard table of coupling coordination degree that the two are currently at an intermediate level of coordination

Judging from the results of the analysis of the coupling degree of the entire energy storage technology and energy storage standards, my country's energy storage technology and energy storage standards are currently well coupled, and there is still room for improvement. The synergistic coupling relationship between the two can be further strengthened to promote benign coupling .

In the example calculation, the evaluation results of the energy storage technology system and the standard system are relatively low. The main reason for the low evaluation results of energy storage technology system is that my country's current technology in the field of energy storage is still very backward. Compared with the leading countries in the field of energy storage, such as the United States and Japan, domestic research on emerging energy storage technology started relatively late and is not strong enough, so attention should be paid to prevent technical barriers in this field from being formed by other countries in the future. Regarding the status quo of the low evaluation results of the energy storage standard system, it can be seen from the evaluation results that the standard advanced index evaluation is very low. The reality is that my country's current energy storage standards often need to refer to standards that have been formulated long ago in foreign countries. As a result, it may be difficult for the formulated standards to keep pace with the latest technology, and it is difficult to keep pace with the times in terms of content. It also makes it difficult for our country to have the right to speak in the field of energy storage, and it is likely to lose a large market in the future. Therefore, it is also necessary to strengthen the enthusiasm and initiative of our country to formulate energy storage standards.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims (6)

1. A coupling analysis method for energy storage technology and energy storage standards, characterized in that it comprises the following steps: Step 1: Establish the evaluation index system of energy storage technology. According to the principle of scientific and standardized construction of the index system, combined with the development status of energy storage technology, the evaluation index system of energy storage technology is divided into technical index system, economic index system and environmental protection index system. There are three categories of influential index systems; Step 2: Establish an evaluation index system for energy storage standards, the evaluation system includes: technical level subsystem, coordination supporting subsystem, structure and content subsystem, and application degree subsystem; Step 3: standardize the raw data; Step 4: Substitute the processed data into the coupling function for calculation, obtain the values of coupling degree and coupling coordination degree, and analyze the coupling relationship between energy storage technology and energy storage standards. 2. The coupling analysis method of energy storage technology and energy storage standards according to claim 1, characterized in that the step 3 includes: scaling the data according to a set ratio, so that the data falls into a smaller specific interval , the 0-1 interval is used here, that is, the value of all data is between 0-1, and it is a dimensionless pure value; the specific processing formula is as follows: Standardization of positive indicators: Normalization of negative indicators: In the formula, x _i ' represents the standard value of the i-th original index, x _i represents the original data of the i-th index, and x _max and x _min represent the maximum and minimum values of the original index, respectively. 3. The coupling analysis method of energy storage technology and energy storage standards according to claim 1, characterized in that, the calculation process using the coupling function in the step 4 is as follows: ${\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; =</span>\underset{\mathrm{<span\; class="notranslate">\; j</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; 1</span>}}{\overset{\mathrm{<span\; class="notranslate">\; m</span>}}{\mathrm{<span\; class="notranslate">\; \&Sigma;</span>}}}{\mathrm{<span\; class="notranslate">\; w</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}\mathrm{<span\; class="notranslate">\; j</span>}}$ Where: i=1,2 $\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; =</span>{<span\; class="notranslate">\; \&lsqb;</span>\frac{{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{{<span\; class="notranslate">\; (</span>\frac{{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; +</span>{\mathrm{<span\; class="notranslate">\; u</span>}}_{\mathrm{<span\; class="notranslate">\; 2</span>}}}{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; \&rsqb;</span>}^{\frac{\mathrm{<span\; class="notranslate">\; 1</span>}}{\mathrm{<span\; class="notranslate">\; 2</span>}}}<span\; class="notranslate">\; ;</span>$ T=αu ₁ +βu ₂ ; $\mathrm{<span\; class="notranslate">\; D.</span>}<span\; class="notranslate">\; =</span>\sqrt{\mathrm{<span\; class="notranslate">\; C</span>}<span\; class="notranslate">\; \&times;</span>\mathrm{<span\; class="notranslate">\; T</span>}}<span\; class="notranslate">\; ;</span>$ In the formula: u ₁ , u ₂ represent the evaluation levels of energy storage technology and energy storage standards respectively, u _1j , u _2j represent the value of the jth index in the energy storage technology evaluation system and energy storage standard evaluation system respectively, w _1j , w _2j respectively represent the weight of the jth index in the energy storage technology evaluation system and the energy storage standard evaluation system, C represents the coupling degree of u ₁ and u ₂ , C∈[0,1]; the larger the value of C, the greater the energy storage The better the coupling between the technology and the energy storage standard, when C=0, it means that the two are in an unrelated state; when C=1, it means that the two are in the best coupling state; T represents the energy storage technology and energy storage standard. Comprehensive evaluation index, α and β are undetermined coefficients, which can be determined according to the importance of technology and standards; D represents the degree of coupling coordination, D∈[0,1], the larger the value of D, the greater the energy storage technology and energy storage standard The higher the level of overall coupling development. 4. The coupling analysis method of energy storage technology and energy storage standards according to claim 3, characterized in that α=0.6 and β=0.4 are set according to the importance of technology and standards. 5. The coupling analysis method of energy storage technology and energy storage standards according to claim 1, characterized in that the technical index system in step 1 includes four sub-indices: capacity, density, life, and efficiency; the economic The performance index system includes three sub-indicators: initial investment, fixed operation and maintenance cost and variable operation and maintenance cost; the impact index system on the environment includes two sub-indices: safety and environmental protection; Among them: safety is used to evaluate the safety and stability of energy storage technology operation, and environmental protection is used to evaluate whether an energy storage technology is green and environmentally friendly, whether it will pollute the environment or affect the ecological environment. 6. The coupling analysis method of energy storage technology and energy storage standards according to claim 1, further comprising step 5: formulating corresponding storage technology based on the coupling relationship between energy storage technology and energy storage standards obtained in step 4. can standard.