Index system aiming at electricity-hydrogen cooperation degree, evaluation method, device and medium

Abstract

The invention provides an index system for an electricity-hydrogen cooperation degree, an evaluation method, an evaluation device, equipment and a medium. The method comprises the following steps of: representing a positioning synergistic effect of two secondary energy sources of electricity and hydrogen on green low-carbon transformation and energy source safe supply by taking the proportion of the electric energy and the hydrogen energy in terminal energy consumption and the external dependency of the energy sources as indexes; a flexible resource scale and a new energy consumption space are taken as indexes to represent the promotion effect of a hydrogen energy system on an electric power system, and green power cost reduction, contribution of income acquisition by participation of a green hydrogen project in an auxiliary service market to green hydrogen cost reduction and safety supply protection capability provided by a large power grid for the green hydrogen project are taken as indexes to represent the promotion effect of the hydrogen energy system on the electric power system. Representing the promotion effect of the power system on the hydrogen energy system; the main body diversity level and the value co-creation ability are used as indexes to represent the inter-chain multi-main-body collaborative symbiosis level, the inter-chain resource sharing level and the value increment level of the electricity and hydrogen double industrial chains, so that the problem that the electricity and hydrogen collaborative degree needs to be clearly and quantitatively measured and calculated in the electricity and hydrogen collaborative development target at different stages is solved.

Description

Technical Field

[0001] The present invention relates to the field of electricity-hydrogen synergy new energy technology, and in particular to an indicator system and evaluation method, device, equipment and medium for the degree of electricity-hydrogen synergy. Background Art

[0002] The coordinated development of electricity and hydrogen is expected to solve the problems of flexible regulation of power systems, new energy consumption, and energy security after the large-scale development of new energy. The two will exist in a stronger coordinated coupling relationship.

[0003] At present, there is no indicator system and evaluation method for the degree of synergy between electricity and hydrogen in the industry. The evaluation of the degree of synergy between electricity and hydrogen abroad is mainly aimed at the project-level synergy between electricity and hydrogen, with the focus on evaluating the "time and space matching" of green hydrogen projects. Time matching refers to the real-time coupling of wind and solar power output and the operating power of the electrolyzer, and space matching refers to the fact that self-built photovoltaic and wind power stations, electrochemical energy storage, electric hydrogen production, and hydrogen storage equipment must be geographically distributed in the same electricity market area, but this evaluation method for the degree of synergy between electricity and hydrogen cannot be targeted at the entire energy system or power system. Overall, the evaluation of the degree of synergy between electricity and hydrogen for large systems lacks standardization and universality, dynamics and timeliness, and the indicator system is not comprehensive enough, and only considers the synergy between electricity and hydrogen for some green hydrogen projects.

[0004] Therefore, it is urgently necessary to propose an indicator system and evaluation method, device, equipment and medium for the degree of electricity-hydrogen synergy, so as to solve the technical problems of the indicator system and evaluation that need to be clearly defined to quantitatively measure the degree of electricity-hydrogen synergy in the future electricity-hydrogen synergy development path planning and the electricity-hydrogen synergy development goals at different stages. Summary of the invention

[0005] In order to overcome the problems existing in the related art, the present disclosure provides an index system and evaluation method, device, equipment and medium for the degree of electricity-hydrogen synergy, so as to solve the technical problems in the related art that require a clear index system and evaluation for quantitatively measuring the degree of electricity-hydrogen synergy.

[0006] One or more embodiments of this specification provide an index system and evaluation method for the degree of electricity-hydrogen synergy, including the following steps:

[0007] The proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy are used as indicators to respectively characterize the positioning and synergy of the two secondary energy sources of electricity and hydrogen on green and low-carbon transformation and energy security supply;

[0008] The scale of flexible resources and the space for absorbing new energy are used as indicators to characterize the role of the hydrogen energy system in promoting the power system. The contribution of green electricity cost reduction and the income obtained by green hydrogen projects from participating in the ancillary service market to the cost reduction of green hydrogen, as well as the ability of large power grids to provide safe supply to green hydrogen projects are used as indicators to characterize the role of the power system in promoting the hydrogen energy system.

[0009] Taking the level of subject diversity and value co-creation capability as indicators, the levels of multi-subject collaborative symbiosis "between chains" and resource sharing and value-added "between chains" of the electricity and hydrogen dual industrial chains are represented respectively.

[0010] Preferably, the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy are used as indicators to respectively characterize the positioning synergy of the two secondary energy sources of electricity and hydrogen on green and low-carbon transformation and energy security supply, which specifically includes the following steps:

[0011] Predict the evolution trend of terminal energy consumption structure, and calculate the proportion of hydrogen energy and electricity in terminal energy consumption. The proportion of hydrogen energy in terminal energy consumption is expressed as follows:

[0012]

[0013] in, represents the total hydrogen demand in terminal energy consumption, W terminal It represents the total final energy consumption;

[0014] The proportion of electricity in final energy consumption is expressed as follows:

[0015]

[0016] Among them, W ele It represents the total amount of electricity demand in final energy consumption;

[0017] The specific formula for calculating my country's overall external energy dependence is as follows:

[0018]

[0019] Among them, W petroleum represents the total amount of oil consumption in terminal energy consumption, D petroleum represents the external dependence of oil, W gas represents the total amount of natural gas consumption in terminal energy consumption, D gas Indicates the degree of external dependence on natural gas.

[0020] Preferably, the flexible resource scale and new energy consumption space are used as indicators to characterize the promotion effect of the hydrogen energy system on the power system, and the contribution of green electricity cost reduction and green hydrogen project participation in the auxiliary service market to the green hydrogen cost reduction, and the large power grid's ability to provide safe supply for green hydrogen projects are used as indicators to characterize the promotion effect of the power system on the hydrogen energy system, which specifically includes the following steps:

[0021] Based on the system planning of the synergistic interaction between electricity and hydrogen, the flexibility resource capacity provided by the key element of hydrogen energy to the power system is calculated. The calculation formula is as follows:

[0022] V flex =V ehpf ·R ehpf +V htu ·R htu ;

[0023] Among them, V ehpf Represents the installed capacity of the hydrogen production facility, V htu represents the installed capacity of the hydrogen-fired unit, R ehpf Indicates the flexible adjustment range of the operating power of the hydrogen production facility, R htu Indicates the flexible adjustment range of the output of the hydrogen-fired unit;

[0024] Based on the development scale of hydrogen and the evolution trend of supply structure, the space for hydrogen production from electricity to help new energy consumption is calculated. The calculation formula is as follows:

[0025]

[0026] in, Indicates the unit power consumption for preparing hydrogen, represents the total amount of hydrogen produced, T green Indicates the proportion of green hydrogen in hydrogen;

[0027] Calculate the role of green electricity cost reduction in promoting green hydrogen cost reduction, and calculate the contribution rate of green electricity cost reduction to green hydrogen cost reduction based on the green electricity cost reduction. The calculation formula is as follows:

[0028]

[0029] Among them, P ele1 Represents the green electricity cost before reducing by 10%, P ele2 represents the cost of green electricity after a 10% reduction, P H1 Green hydrogen costs before green electricity costs are reduced by 10%, P H2 The cost of green hydrogen after reducing the cost of green electricity by 10%;

[0030] Among them, P ele1 , P ele2 , P H1 , P H2The relationship between them is shown as follows:

[0031]

[0032] Among them, I nv represents the investment and construction cost of hydrogen production equipment and supporting facilities, M H2 Represents the total hydrogen production during the entire life cycle of the equipment, C opex Represents the operation and maintenance costs of hydrogen production equipment per unit of hydrogen;

[0033] The contribution of the revenue obtained by hydrogen production equipment from participating in the auxiliary service market to the cost reduction of green hydrogen is calculated as follows:

[0034]

[0035] Among them, R1 represents the total adjustment benefit of the equipment in the whole life cycle before the increase of 10%, R2 represents the total adjustment benefit of the equipment in the whole life cycle after the increase of 10%, P H3 To adjust the cost of green hydrogen before the revenue increase by 10%, P H4 represents the cost of green hydrogen after adjusting for a 10% increase in revenue;

[0036] Among them, R1, R2, P H3 , P H4 The relationship between them is shown as follows:

[0037]

[0038] Preferably, the subject diversity level and value co-creation capability are used as indicators to respectively characterize the level of multi-subject collaborative symbiosis between the electricity and hydrogen dual industrial chains and the level of resource sharing and value-added between the chains, specifically including the following steps:

[0039] Based on the number of upstream green hydrogen production manufacturers, the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, and the number of manufacturers in the entire hydrogen energy industry chain, the diversity level of the electricity-hydrogen synergy industry chain is calculated. The calculation formula is as follows:

[0040]

[0041] Among them, N up Represents the number of upstream green hydrogen production manufacturers, N down Represents the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, N all Represents the number of manufacturers in the entire hydrogen energy industry chain;

[0042] Based on the upstream green hydrogen production and the total output value of new energy and related supporting industries driven by it, the downstream hydrogen energy storage, comprehensive utilization of hydrogen and the total output value of related industries driven by it, as well as the total output value of the entire hydrogen energy industry, the electricity-hydrogen synergistic value co-creation capability is calculated. The calculation formula is as follows:

[0043]

[0044] Among them, C up Represents the total output value of upstream green hydrogen production and the new energy and related supporting industries it drives, C down Represents the total output value of downstream hydrogen energy storage, comprehensive utilization of hydrogen and related industries, C all Represents the total output value of the entire hydrogen energy industry.

[0045] One or more embodiments of this specification provide an index system and evaluation device for the degree of electricity-hydrogen synergy, including a positioning synergy module, a system synergy module and an industrial chain synergy module;

[0046] The positioning coordination module is used to characterize the positioning coordination effect of the two secondary energies of electricity and hydrogen on green and low-carbon transformation and energy security supply by taking the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy as indicators;

[0047] The system coordination module is used to characterize the promotion effect of the hydrogen energy system on the power system based on the scale of flexible resources and the space for accommodating new energy sources, and to characterize the promotion effect of the power system on the hydrogen energy system based on the contribution of green electricity cost reduction and the benefits obtained by green hydrogen projects participating in the auxiliary service market to green hydrogen cost reduction, and the safety and supply guarantee capability provided by the large power grid to green hydrogen projects;

[0048] The industrial chain collaboration module is used to characterize the level of multi-subject collaborative symbiosis between "chains" and the level of resource sharing and value-added between "chains" in the electricity and hydrogen dual industrial chains, based on the level of subject diversity and value co-creation capability.

[0049] Preferably, the positioning collaboration module is specifically configured as follows:

[0050] Predict the evolution trend of terminal energy consumption structure, and calculate the proportion of hydrogen energy and electricity in terminal energy consumption. The proportion of hydrogen energy in terminal energy consumption is expressed as follows:

[0051]

[0052] in, represents the total hydrogen demand in terminal energy consumption, W terminal It represents the total final energy consumption;

[0053] The proportion of electricity in final energy consumption is expressed as follows:

[0054]

[0055] Among them, W ele It represents the total amount of electricity demand in final energy consumption;

[0056] The specific formula for calculating my country's overall external energy dependence is as follows:

[0057]

[0058] Among them, W petroleum represents the total amount of oil consumption in terminal energy consumption, D petroleum represents the external dependence of oil, W gas represents the total amount of natural gas consumption in terminal energy consumption, D gas Indicates the degree of external dependence on natural gas.

[0059] Preferably, the system collaboration module is specifically configured as follows:

[0060] Based on the system planning of the synergistic interaction between electricity and hydrogen, the flexibility resource capacity provided by the key element of hydrogen energy to the power system is calculated. The calculation formula is as follows:

[0061] V flex =V ehpf ·R ehpf +V htu ·R htu ;

[0062] Among them, V ehpf Represents the installed capacity of the electric hydrogen production facility, V htu Represents the installed capacity of the hydrogen-fired unit, R ehpf Indicates the flexible adjustment range of the operating power of the hydrogen production facility, R htu Indicates the flexible adjustment range of the output of the hydrogen-fired unit;

[0063] Based on the development scale of hydrogen and the evolution trend of supply structure, the space for hydrogen production from electricity to help new energy consumption is calculated. The calculation formula is as follows:

[0064]

[0065] in, Indicates the unit power consumption for preparing hydrogen, represents the total amount of hydrogen produced, T green Indicates the proportion of green hydrogen in hydrogen;

[0066] Calculate the role of green electricity cost reduction in promoting green hydrogen cost reduction, and calculate the contribution rate of green electricity cost reduction to green hydrogen cost reduction based on the green electricity cost reduction. The calculation formula is as follows:

[0067]

[0068] Among them, P ele1 Represents the green electricity cost before reducing by 10%, P ele2 represents the cost of green electricity after a 10% reduction, P H1 Green hydrogen costs before green electricity costs are reduced by 10%, P H2 The cost of green hydrogen after reducing the cost of green electricity by 10%;

[0069] Among them, P ele1 , P ele2 , P H1 , P H2 The relationship between them is shown as follows:

[0070]

[0071] Among them, I nv represents the investment and construction cost of hydrogen production equipment and supporting facilities, M H2 Represents the total hydrogen production during the entire life cycle of the equipment, C opex Represents the operation and maintenance costs of hydrogen production equipment per unit of hydrogen;

[0072] The contribution of the revenue obtained by hydrogen production equipment from participating in the auxiliary service market to the cost reduction of green hydrogen is calculated as follows:

[0073]

[0074] Among them, R1 represents the total adjustment benefit of the equipment in the whole life cycle before the increase of 10%, R2 represents the total adjustment benefit of the equipment in the whole life cycle after the increase of 10%, P H3 To adjust the cost of green hydrogen before the revenue increase by 10%, P H4 represents the cost of green hydrogen after adjusting for a 10% increase in revenue;

[0075] Among them, R1, R2, P H3 , P H4 The relationship between them is shown as follows:

[0076]

[0077] Preferably, the industrial chain collaboration module is specifically configured as follows:

[0078] Based on the number of upstream green hydrogen production manufacturers, the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, and the number of manufacturers in the entire hydrogen energy industry chain, the diversity level of the electricity-hydrogen synergy industry chain is calculated. The calculation formula is as follows:

[0079]

[0080] Among them, N up Represents the number of upstream green hydrogen production manufacturers, N down Represents the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, N all Represents the number of manufacturers in the entire hydrogen energy industry chain;

[0081] Based on the upstream green hydrogen production and the total output value of new energy and related supporting industries driven by it, the downstream hydrogen energy storage, comprehensive utilization of hydrogen and the total output value of related industries driven by it, as well as the total output value of the entire hydrogen energy industry, the electricity-hydrogen synergistic value co-creation capability is calculated. The calculation formula is as follows:

[0082]

[0083] Among them, C up Represents the total output value of upstream green hydrogen production and the new energy and related supporting industries it drives, C down Represents the total output value of downstream hydrogen energy storage, comprehensive utilization of hydrogen and related industries, C all Represents the total output value of the entire hydrogen energy industry.

[0084] One or more embodiments of the present specification provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned index system and evaluation method for the degree of electricity-hydrogen synergy when executing the computer program.

[0085] One or more embodiments of the present specification provide a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the above-mentioned index system and evaluation method for the degree of electricity-hydrogen synergy.

[0086] The present disclosure provides an index system and evaluation method, device, equipment and medium for the degree of electricity-hydrogen synergy, which has the advantages of using the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy as indicators to respectively characterize the positioning synergy of the two secondary energy sources of electricity and hydrogen on green and low-carbon transformation and energy security and supply, so as to comprehensively evaluate the degree of electricity-hydrogen synergy, objectively reflect all aspects of electricity-hydrogen synergy, and help formulate more targeted development goals, policies and strategies; using the scale of flexible resources and the space for new energy consumption as indicators to characterize the role of the hydrogen energy system in promoting the power system, and using the cost reduction of green electricity and the participation of green hydrogen projects in auxiliary services as indicators to characterize the role of the hydrogen energy system in promoting the power system. The contribution of revenue from the service market to the cost reduction of green hydrogen and the ability of large power grids to ensure safe supply of green hydrogen projects are used as indicators to characterize the role of the power system in promoting the hydrogen energy system. Through quantitative evaluation of these indicators, the degree of electricity-hydrogen synergy can be evaluated more accurately, avoiding the deviation caused by subjective evaluation. The level of subject diversity and value co-creation capability are used as indicators to characterize the level of multi-subject collaborative symbiosis "between chains" of the electricity and hydrogen dual industrial chains and the level of "inter-chain" resource sharing and value-added. By analyzing and evaluating the mutual influence and interaction between systems, we can better understand the nature and mechanism of electricity-hydrogen synergy, providing a scientific basis for deepening collaborative cooperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0087] In order to more clearly illustrate one or more embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0088] Figure 1 A flow chart of an index system and evaluation method for the degree of electricity-hydrogen synergy provided for one or more embodiments of this specification;

[0089] Figure 2 A schematic diagram of the index system structure for evaluating the degree of electricity-hydrogen synergy provided for one or more embodiments of this specification;

[0090] Figure 3 A schematic diagram of the structure of an index system and an evaluation device for the degree of electricity-hydrogen synergy provided for one or more embodiments of this specification;

[0091] Figure 4 A schematic diagram of the structure of a computer device provided for one or more embodiments of this specification. DETAILED DESCRIPTION

[0092] In order to enable those skilled in the art to better understand the technical solutions in one or more embodiments of this specification, the technical solutions in one or more embodiments of this specification will be clearly and completely described below in conjunction with the drawings in one or more embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on one or more embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the protection scope of the present invention.

[0093] The present invention is described in detail below in conjunction with specific implementation methods and the accompanying drawings.

[0094] Method Embodiment

[0095] Starting from the three dimensions of positioning coordination as energy types, system coordination based on physical coupling, and industrial chain coordination based on industrial layout, an index system is constructed to characterize the degree and development level of "electricity-hydrogen coordination". In terms of positioning coordination as energy types, the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy are used as indicators to characterize the synergistic effect of the two secondary energy sources of electricity and hydrogen on green and low-carbon transformation and energy security supply. In terms of system coordination based on physical coupling, the scale of flexible resources and the space for new energy consumption are used as indicators to characterize the role of the hydrogen energy system in promoting the power system; the contribution of green electricity cost reduction and green hydrogen projects to the cost reduction of green hydrogen by participating in the auxiliary service market to the income, and the ability of large power grids to provide safe supply for green hydrogen projects are used as indicators to characterize the role of the power system in promoting the hydrogen energy system. In terms of industrial chain coordination based on industrial layout, the level of subject diversity and value co-creation ability are used as indicators to characterize the level of multi-subject synergy and symbiosis "between chains" of the electricity and hydrogen dual industrial chains and the level of resource sharing and value-added "between chains". See the attached diagram of the index system and evaluation method for the degree of electricity-hydrogen synergy development. Figure 1 .

[0096] According to an embodiment of the present invention, an index system and evaluation method for the degree of electricity-hydrogen synergy are provided, such as Figure 2 As shown, it is a flow chart of the index system and evaluation method for the degree of electricity-hydrogen synergy provided in this embodiment. According to the index system and evaluation method for the degree of electricity-hydrogen synergy of the embodiment of the present invention, it includes:

[0097] S210. The proportion of electricity and hydrogen energy in terminal energy consumption and the degree of external energy dependence are used as indicators to characterize the synergistic role of electricity and hydrogen as two secondary energy sources in the green and low-carbon transformation and energy security.

[0098] S220. The scale of flexible resources and the space for absorbing new energy are used as indicators to characterize the role of the hydrogen energy system in promoting the power system. The contribution of green electricity cost reduction and the income obtained by green hydrogen projects from participating in the auxiliary service market to the cost reduction of green hydrogen, and the ability of large power grids to ensure safe supply of green hydrogen projects are used as indicators to characterize the role of the power system in promoting the hydrogen energy system.

[0099] S230. Using the subject diversity level and value co-creation capability as indicators, the levels of multi-subject collaborative symbiosis between the electricity and hydrogen dual industrial chains and the levels of resource sharing and value-added between the chains are represented respectively.

[0100] The method provided in this embodiment uses the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy as indicators to characterize the positioning synergy of the two secondary energy sources of electricity and hydrogen on green and low-carbon transformation and energy security supply, which can comprehensively evaluate the degree of electricity-hydrogen synergy, objectively reflect all aspects of electricity-hydrogen synergy, and help to formulate more targeted development goals, policies and strategies; uses the scale of flexible resources and the space for new energy consumption as indicators to characterize the role of the hydrogen energy system in promoting the power system; uses the contribution of green electricity cost reduction and green hydrogen project participation in the auxiliary service market to the green hydrogen cost reduction, and the large power grid's ability to provide safe supply for green hydrogen projects as indicators to characterize the role of the power system in promoting the hydrogen energy system. Through the quantitative evaluation of these indicators, the degree of electricity-hydrogen synergy can be more accurately evaluated, avoiding the deviation caused by subjective evaluation; uses the subject diversity level and value co-creation ability as indicators to characterize the "inter-chain" multi-subject synergy and the "inter-chain" resource sharing and value-added level of the electricity and hydrogen dual industrial chains. By analyzing and evaluating the mutual influence and role between systems, the nature and mechanism of electricity-hydrogen synergy can be better understood, providing a scientific basis for deepening collaborative cooperation.

[0101] In one embodiment, the degree of coordination between the positioning of electricity and hydrogen as energy types is calculated, and based on the Long-range Energy Alternatives Planning System (LEAP) model, the consumption of energy such as oil, natural gas, electricity, and hydrogen energy in future key horizontal years is predicted, and the data on the demand for oil, natural gas, electricity, and hydrogen energy are collated year by year during the planning period.

[0102] S210. Based on the collated data, the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy are used as indicators to respectively characterize the positioning and synergistic effect of the two secondary energies of electricity and hydrogen on the green and low-carbon transformation and energy security supply, which specifically includes the following steps:

[0103] S2101. Predict the evolution trend of terminal energy consumption structure and calculate the proportion of hydrogen energy and electric energy in terminal energy consumption. The proportion of hydrogen energy in terminal energy consumption is expressed as follows:

[0104]

[0105] in, represents the total hydrogen demand in terminal energy consumption, W terminal Represents the total final energy consumption.

[0106] The proportion of electricity in final energy consumption is expressed as follows:

[0107]

[0108] Among them, W ele It represents the total amount of electricity demand in final energy consumption;

[0109] S2102. Calculate the overall external dependence of my country's energy. The specific formula is as follows:

[0110]

[0111] Among them, W petroleum represents the total amount of oil consumption in terminal energy consumption, D petroleum represents the external dependence of oil, W gas represents the total amount of natural gas consumption in terminal energy consumption, D gas Indicates the degree of external dependence on natural gas.

[0112] The method provided in this embodiment selects specific quantitative indicators, such as the proportion of electricity and hydrogen in terminal energy consumption, external energy dependence, and flexibility resource utilization, and through quantitative evaluation of these indicators, it can more accurately evaluate the degree of electricity-hydrogen synergy and avoid the deviation caused by subjective evaluation.

[0113] In one embodiment, the overall external dependence of my country's energy is measured, and the scale of electricity and hydrogen in terminal energy consumption is gradually expanding, replacing imported oil and natural gas in some scenarios, reducing my country's overall external dependence on energy. Considering that my country's coal energy has basically achieved self-sufficiency, only the situation of imported oil and natural gas is considered.

[0114] S220, the above-mentioned characterization of the promotion effect of the hydrogen energy system on the power system by using the scale of flexible resources and the space for accommodating new energy as indicators, the characterization of the promotion effect of the power system on the hydrogen energy system by using the contribution of green electricity cost reduction and the income obtained by green hydrogen projects participating in the auxiliary service market to the green hydrogen cost reduction, and the safety supply guarantee capability provided by the large power grid to the green hydrogen projects as indicators, specifically includes the following steps:

[0115] S2201. Based on the system planning of the synergistic interaction between electricity and hydrogen, the flexibility resource capacity provided by the key element of hydrogen energy to the power system is calculated. The calculation formula is as follows:

[0116] V flex =V ehpf ·R ehpf +V htu ·R htu ;

[0117] Among them, V ehpf Represents the installed capacity of the electric hydrogen production facility, V htu Represents the installed capacity of the hydrogen-fired unit, R ehpf Indicates the flexible adjustment range of the operating power of the hydrogen production facility, R htu Indicates the flexible adjustment range of the output of the hydrogen-fired unit.

[0118] Calculate the new energy consumption space provided by hydrogen production for the power system. Through the close coupling of hydrogen production operating power and new energy output fluctuations, the fluctuating output of new energy can be tracked in real time to expand the new energy consumption space. Based on the development scale of hydrogen and the evolution trend of supply structure, it is possible to further calculate the space V for hydrogen production to help new energy consumption. con .

[0119] S2202. Based on the development scale of hydrogen and the evolution trend of supply structure, calculate the space for hydrogen production from electricity to help new energy consumption. The calculation formula is as follows:

[0120]

[0121] in, Indicates the unit power consumption for preparing hydrogen, represents the total amount of hydrogen produced, T green Indicates the proportion of green hydrogen in hydrogen.

[0122] S2203. Calculate the role of green electricity cost reduction in promoting green hydrogen cost reduction. Calculate the contribution rate of green electricity cost reduction to green hydrogen cost reduction. The reduction of green electricity cost will directly help green hydrogen cost reduction. When the green electricity cost is reduced by 10%, its contribution rate Tr1 to the reduction of green hydrogen cost can be obtained by the formula. The calculation formula is as follows:

[0123]

[0124] Among them, P ele1 Represents the green electricity cost before reducing by 10%, P ele2 represents the cost of green electricity after a 10% reduction, P H1 Green hydrogen costs before green electricity costs are reduced by 10%, P H2 The cost of green hydrogen after the cost of green electricity is reduced by 10%.

[0125] Among them, P ele1 , P ele2 , P H1, P H2 The relationship between them is shown as follows:

[0126]

[0127] Among them, I nv represents the investment and construction cost of hydrogen production equipment and supporting facilities, M H2 Represents the total hydrogen production during the entire life cycle of the equipment, C opex Represents the operation and maintenance costs of hydrogen production equipment per unit of hydrogen produced.

[0128] S2204. Calculate the role of the benefits of hydrogen production equipment participating in the auxiliary service market in promoting the cost reduction of green hydrogen. The contribution rate of the adjustment benefits obtained by the green hydrogen project participating in the power auxiliary service market to the reduction of green hydrogen costs is calculated as follows:

[0129]

[0130] Among them, R1 represents the total adjustment benefit of the equipment in the whole life cycle before the increase of 10%, R2 represents the total adjustment benefit of the equipment in the whole life cycle after the increase of 10%, P H3 To adjust the cost of green hydrogen before the revenue increase by 10%, P H4 represents the cost of green hydrogen after adjusting for a 10% increase in revenue;

[0131] Among them, R1, R2, P H3 , P H4 The relationship between them is shown as follows:

[0132]

[0133] The method provided in this embodiment focuses on the physical coupling relationship between the hydrogen energy system and the power system, as well as the synergy in the industrial chain. By analyzing and evaluating the mutual influence and interaction between the systems, we can better understand the nature and mechanism of electricity-hydrogen synergy and provide a scientific basis for deepening collaborative cooperation.

[0134] In one embodiment, based on the industrial chain coordination of the industrial layout and the diversity level of the entities, the hydrogen energy industry chain will be gradually improved, and the number and types of market entities will continue to increase, driving the common development of related upstream and downstream enterprises in the hydrogen energy industry chain.

[0135] S230, the subject diversity level and value co-creation capability are used as indicators to characterize the level of multi-subject symbiosis between the electricity and hydrogen dual industrial chains and the level of resource sharing and value-added between the chains, and specifically include the following steps:

[0136] S2301. Based on the number of upstream green hydrogen production manufacturers, the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, and the number of manufacturers in the entire hydrogen energy industry chain, calculate the diversity level of the electricity-hydrogen synergy industry chain. The calculation formula is as follows:

[0137]

[0138] Among them, N up Represents the number of upstream green hydrogen production manufacturers, N down Represents the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, N all Represents the number of manufacturers in the entire hydrogen energy industry chain.

[0139] Through the coupling and extension of the electricity and hydrogen multi-industry chain, it will further promote related supporting investments across industries and upstream and downstream of the industrial chain, and drive the layout of industries such as new energy, hydrogen production, comprehensive utilization of hydrogen, hydrogen pipelines, and hydrogen energy storage construction.

[0140] S2302. Based on the upstream green hydrogen production and the total output value of new energy and related supporting industries driven by it, the downstream hydrogen energy storage, hydrogen comprehensive utilization and the total output value of related industries driven by it, and the total output value of the entire hydrogen energy industry, calculate the electricity-hydrogen synergistic value co-creation capability. The calculation formula is as follows:

[0141]

[0142] Among them, C up Represents the total output value of upstream green hydrogen production and the new energy and related supporting industries it drives, C down Represents the total output value of downstream hydrogen energy storage, comprehensive utilization of hydrogen and related industries, C all Represents the total output value of the entire hydrogen energy industry.

[0143] The method provided in this embodiment comprehensively evaluates the degree and development stage of electricity-hydrogen synergy through industrial chain synergy based on industrial layout, realizes synergistic symbiosis and value-added, provides scientific decision-making basis for relevant departments, further optimizes resource allocation, and promotes the coordinated development of the electricity-hydrogen synergy industrial chain.

[0144] Device Embodiment

[0145] According to an embodiment of the present invention, an index system and an evaluation device for the degree of electricity-hydrogen synergy are provided, such as Figure 3 As shown, it is a structural schematic diagram of the indicator system and evaluation device for the degree of electricity-hydrogen synergy provided in this embodiment. The indicator system and evaluation device for the degree of electricity-hydrogen synergy according to the embodiment of the present invention include a positioning coordination module 310, a system coordination module 320 and an industrial chain coordination module 330.

[0146] The positioning coordination module 310 is used to characterize the positioning coordination effect of the two secondary energies of electricity and hydrogen on the green and low-carbon transformation and energy security supply by taking the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy as indicators.

[0147] The system coordination module 320 is used to characterize the promoting effect of the hydrogen energy system on the power system based on the scale of flexible resources and the space for accommodating new energy sources, and to characterize the promoting effect of the power system on the hydrogen energy system based on the contribution of green electricity cost reduction and the income obtained by green hydrogen projects from participating in the auxiliary service market to the cost reduction of green hydrogen, and the safe supply capability of the large power grid for green hydrogen projects.

[0148] The industrial chain collaboration module 330 is used to characterize the level of multi-subject collaborative symbiosis between "chains" and the level of resource sharing and value-added between "chains" in the electricity and hydrogen dual industrial chains, respectively, using the level of subject diversity and value co-creation capability as indicators.

[0149] The device provided in this embodiment, the positioning coordination module 310 uses the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy as indicators to respectively characterize the positioning coordination effect of the two secondary energy sources of electricity and hydrogen on green and low-carbon transformation and energy security supply, which can comprehensively evaluate the degree of electricity-hydrogen coordination, objectively reflect all aspects of electricity-hydrogen coordination, and help to formulate more targeted development goals, policies and strategies; the system coordination module 320 uses the scale of flexible resources and the space for new energy consumption as indicators to characterize the role of the hydrogen energy system in promoting the power system, and uses the green electricity cost reduction and the green hydrogen project participating in the auxiliary service market to obtain income to reduce the cost of green hydrogen The contribution of the power grid to green hydrogen projects and the ability of large power grids to ensure safe supply are used as indicators to characterize the role of the power system in promoting the hydrogen energy system. Through the quantitative evaluation of these indicators, the degree of electricity-hydrogen synergy can be evaluated more accurately, avoiding the deviation caused by subjective evaluation. The industrial chain collaboration module 330 uses the subject diversity level and value co-creation capability as indicators to characterize the "inter-chain" multi-subject collaborative symbiosis level and the "inter-chain" resource sharing and value-added level of the electricity and hydrogen dual industrial chains. By analyzing and evaluating the mutual influence and interaction between systems, we can better understand the nature and mechanism of electricity-hydrogen synergy and provide a scientific basis for deepening collaborative cooperation.

[0150] In one embodiment, the positioning coordination module 310 is specifically configured as follows:

[0151] Predict the evolution trend of terminal energy consumption structure, and calculate the proportion of hydrogen energy and electricity in terminal energy consumption. The proportion of hydrogen energy in terminal energy consumption is expressed as follows:

[0152]

[0153] in, represents the total hydrogen demand in terminal energy consumption, Wterminal Represents the total final energy consumption.

[0154] The proportion of electricity in final energy consumption is expressed as follows:

[0155]

[0156] Among them, W ele Represents the total amount of electricity demand in final energy consumption.

[0157] The specific formula for calculating my country's overall external energy dependence is as follows:

[0158]

[0159] Among them, W petroleum represents the total amount of oil consumption in terminal energy consumption, D petroleum represents the external dependence of oil, W gas represents the total amount of natural gas consumption in terminal energy consumption, D gas Indicates the degree of external dependence on natural gas.

[0160] The device provided in this embodiment selects specific quantitative indicators, such as the proportion of electricity and hydrogen in terminal energy consumption, external energy dependence, and flexibility resource utilization, and through quantitative evaluation of these indicators, it can more accurately evaluate the degree of electricity-hydrogen synergy and avoid the deviation caused by subjective evaluation.

[0161] In one embodiment, the system coordination module 320 is specifically configured as follows:

[0162] Based on the system planning of the synergistic interaction between electricity and hydrogen, the flexibility resource capacity provided by the key element of hydrogen energy to the power system is calculated. The calculation formula is as follows:

[0163] V flex =V ehpf ·R ehpf +V htu ·R htu ;

[0164] Among them, V ehpf Represents the installed capacity of the electric hydrogen production facility, V htu Represents the installed capacity of the hydrogen-fired unit, R ehpf Indicates the flexible adjustment range of the operating power of the hydrogen production facility, R htu Indicates the flexible adjustment range of the output of the hydrogen-fired unit.

[0165] Based on the development scale of hydrogen and the evolution trend of supply structure, the space for hydrogen production from electricity to help new energy consumption is calculated. The calculation formula is as follows:

[0166]

[0167] in, Indicates the unit power consumption for preparing hydrogen, represents the total amount of hydrogen produced, T green Indicates the proportion of green hydrogen in hydrogen.

[0168] Calculate the role of green electricity cost reduction in promoting green hydrogen cost reduction, and calculate the contribution rate of green electricity cost reduction to green hydrogen cost reduction based on the green electricity cost reduction. The calculation formula is as follows:

[0169]

[0170] Among them, P ele1 Represents the green electricity cost before reducing by 10%, P ele2 represents the cost of green electricity after a 10% reduction, P H1 Green hydrogen costs before green electricity costs are reduced by 10%, P H2 The cost of green hydrogen after the cost of green electricity is reduced by 10%.

[0171] Among them, P ele1 , P ele2 , P H1 , P H2 The relationship between them is shown as follows:

[0172]

[0173] Among them, I nv represents the investment and construction cost of hydrogen production equipment and supporting facilities, M H2 Represents the total hydrogen production during the entire life cycle of the equipment, C opex Represents the operation and maintenance costs of hydrogen production equipment per unit of hydrogen produced.

[0174] The contribution of the revenue obtained by hydrogen production equipment from participating in the auxiliary service market to the cost reduction of green hydrogen is calculated as follows:

[0175]

[0176] Among them, R1 represents the total adjustment benefit of the equipment in the whole life cycle before the increase of 10%, R2 represents the total adjustment benefit of the equipment in the whole life cycle after the increase of 10%, P H3 To adjust the cost of green hydrogen before the revenue increase by 10%, P H4 Represents the cost of green hydrogen after adjusting for a 10% increase in revenue.

[0177] Among them, R1, R2, P H3 , P H4 The relationship between them is shown as follows:

[0178]

[0179] The device provided in this embodiment focuses on the physical coupling relationship between the hydrogen energy system and the power system, as well as the synergy in the industrial chain. By analyzing and evaluating the mutual influence and interaction between the systems, we can better understand the nature and mechanism of electricity-hydrogen synergy and provide a scientific basis for deepening collaborative cooperation.

[0180] In one embodiment, the industrial chain collaboration module 330 is specifically configured as follows:

[0181] Based on the number of upstream green hydrogen production manufacturers, the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, and the number of manufacturers in the entire hydrogen energy industry chain, the diversity level of the electricity-hydrogen synergy industry chain is calculated. The calculation formula is as follows:

[0182]

[0183] Among them, N up Represents the number of upstream green hydrogen production manufacturers, N down Represents the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, N all Represents the number of manufacturers in the entire hydrogen energy industry chain.

[0184] Based on the upstream green hydrogen production and the total output value of new energy and related supporting industries driven by it, the downstream hydrogen energy storage, comprehensive utilization of hydrogen and the total output value of related industries driven by it, as well as the total output value of the entire hydrogen energy industry, the electricity-hydrogen synergistic value co-creation capability is calculated. The calculation formula is as follows:

[0185]

[0186] Among them, C up Represents the total output value of upstream green hydrogen production and the new energy and related supporting industries it drives, C down Represents the total output value of downstream hydrogen energy storage, comprehensive utilization of hydrogen and related industries, C all Represents the total output value of the entire hydrogen energy industry.

[0187] The device provided in this embodiment comprehensively evaluates the degree and development stage of electricity-hydrogen synergy through industrial chain synergy based on industrial layout, realizes synergistic symbiosis and value-added, provides scientific decision-making basis for relevant departments, further optimizes resource allocation, and promotes the coordinated development of the electricity-hydrogen synergy industrial chain.

[0188] The embodiment of the present invention is an apparatus embodiment corresponding to the above-mentioned method embodiment. The specific operations of the processing steps of each module can be understood by referring to the description of the method embodiment, which will not be repeated here.

[0189] like Figure 4As shown, the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the indicator system and evaluation method in the above-mentioned embodiment, or, when executed by a processor, implements the indicator system and evaluation method for the degree of electricity-hydrogen synergy in the above-mentioned embodiment.

[0190] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0191] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The device and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0192] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and the contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. An index system and evaluation method for the degree of electricity-hydrogen synergy, characterized in that: The following steps are involved: The proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy are used as indicators to respectively characterize the positioning and synergy of the two secondary energy sources of electricity and hydrogen on green and low-carbon transformation and energy security supply; The scale of flexible resources and the space for absorbing new energy are used as indicators to characterize the role of the hydrogen energy system in promoting the power system. The contribution of green electricity cost reduction and the income obtained by green hydrogen projects from participating in the ancillary service market to the cost reduction of green hydrogen, as well as the ability of large power grids to provide safe supply to green hydrogen projects are used as indicators to characterize the role of the power system in promoting the hydrogen energy system. Taking the subject diversity level and value co-creation capability as indicators, the levels of multi-subject collaborative symbiosis "between chains" and resource sharing and value-added levels of the electricity and hydrogen dual industrial chains are represented respectively.

2. The index system and evaluation method according to claim 1, characterized in that: The above-mentioned indicators of the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy are used to respectively characterize the positioning and synergy of the two secondary energy sources of electricity and hydrogen on green and low-carbon transformation and energy security supply, which specifically include the following steps: Predict the evolution trend of terminal energy consumption structure, and calculate the proportion of hydrogen energy and electricity in terminal energy consumption. The proportion of hydrogen energy in terminal energy consumption is expressed as follows: in, represents the total hydrogen demand in terminal energy consumption, W terminal It represents the total final energy consumption; The proportion of electricity in final energy consumption is expressed as follows: Among them, W ele It represents the total amount of electricity demand in final energy consumption; The specific formula for calculating my country's overall external energy dependence is as follows: Among them, W petroleum represents the total amount of oil consumption in terminal energy consumption, D petroleum represents the external dependence of oil, W gas represents the total amount of natural gas consumption in terminal energy consumption, D gas Indicates the degree of external dependence on natural gas.

3. The index system and evaluation method according to claim 1, characterized in that: The above-mentioned uses the scale of flexible resources and the space for accommodating new energy sources as indicators to characterize the role of the hydrogen energy system in promoting the power system, uses the contribution of green electricity cost reduction and the income obtained by green hydrogen projects participating in the auxiliary service market to the cost reduction of green hydrogen, and the ability of large power grids to provide safe supply for green hydrogen projects as indicators to characterize the role of the power system in promoting the hydrogen energy system, and specifically includes the following steps: Based on the system planning of the synergistic interaction between electricity and hydrogen, the flexibility resource capacity provided by the key element of hydrogen energy to the power system is calculated. The calculation formula is as follows: V flex =V ehpf ·R ehpf +V htu ·R htu ; Among them, V ehpf Represents the installed capacity of the hydrogen production facility, V htu Represents the installed capacity of the hydrogen-fired unit, R ehpf Indicates the flexible adjustment range of the operating power of the hydrogen production facility, R htu Indicates the flexible adjustment range of the output of the hydrogen-fired unit; Based on the development scale of hydrogen and the evolution trend of supply structure, the space for hydrogen production from electricity to help new energy consumption is calculated. The calculation formula is as follows: in, Indicates the unit power consumption for preparing hydrogen, represents the total amount of hydrogen produced, T green Indicates the proportion of green hydrogen in hydrogen; Calculate the role of green electricity cost reduction in promoting green hydrogen cost reduction, and calculate the contribution rate of green electricity cost reduction to green hydrogen cost reduction based on the green electricity cost reduction. The calculation formula is as follows: Among them, P ele1 Represents the green electricity cost before reducing by 10%, P ele2 represents the cost of green electricity after a 10% reduction, P H1 Green hydrogen costs before green electricity costs are reduced by 10%, P H2 The cost of green hydrogen after reducing the cost of green electricity by 10%; Among them, P ele1 , P ele2 , P H1 , P H2 The relationship between them is shown as follows: Among them, I nv represents the investment and construction cost of hydrogen production equipment and supporting facilities, M H2 Represents the total hydrogen production during the entire life cycle of the equipment, C opex Represents the operation and maintenance costs of hydrogen production equipment per unit of hydrogen; The contribution of the revenue obtained by hydrogen production equipment from participating in the auxiliary service market to the cost reduction of green hydrogen is calculated as follows: Among them, R1 represents the total adjustment benefit of the equipment in the whole life cycle before the increase of 10%, R2 represents the total adjustment benefit of the equipment in the whole life cycle after the increase of 10%, P H3 To adjust the cost of green hydrogen before the revenue increase by 10%, P H4 represents the cost of green hydrogen after adjusting for a 10% increase in revenue; Among them, R1, R2, P H3 , P H4 The relationship between them is shown as follows:

4. The index system and evaluation method according to claim 1, characterized in that: The subject diversity level and value co-creation capability are used as indicators to characterize the level of multi-subject symbiosis between the electricity and hydrogen dual industrial chains and the level of resource sharing and value-added between the chains, respectively. Specifically, the following steps are included: Based on the number of upstream green hydrogen production manufacturers, the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, and the number of manufacturers in the entire hydrogen energy industry chain, the diversity level of the electricity-hydrogen synergy industry chain is calculated. The calculation formula is as follows: Among them, N up Represents the number of upstream green hydrogen production manufacturers, N down Represents the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, N all Represents the number of manufacturers in the entire hydrogen energy industry chain; Based on the upstream green hydrogen production and the total output value of new energy and related supporting industries driven by it, the downstream hydrogen energy storage, comprehensive utilization of hydrogen and the total output value of related industries driven by it, as well as the total output value of the entire hydrogen energy industry, the electricity-hydrogen synergistic value co-creation capability is calculated. The calculation formula is as follows: Among them, C up Represents the total output value of upstream green hydrogen production and the new energy and related supporting industries it drives, C down Represents the total output value of downstream hydrogen energy storage, comprehensive utilization of hydrogen and related industries, C all Represents the total output value of the entire hydrogen energy industry.

5. An index system and evaluation device for the degree of electricity-hydrogen synergy, characterized in that: Including positioning collaboration module, system collaboration module and industry chain collaboration module; The positioning coordination module is used to characterize the positioning coordination effect of the two secondary energies of electricity and hydrogen on green and low-carbon transformation and energy security supply by taking the proportion of electricity and hydrogen energy in terminal energy consumption and the external dependence of energy as indicators; The system coordination module is used to characterize the promotion effect of the hydrogen energy system on the power system based on the scale of flexible resources and the space for accommodating new energy sources, and to characterize the promotion effect of the power system on the hydrogen energy system based on the contribution of green electricity cost reduction and the benefits obtained by green hydrogen projects participating in the auxiliary service market to green hydrogen cost reduction, and the safety and supply guarantee capability provided by the large power grid to green hydrogen projects; The industrial chain collaboration module is used to characterize the level of multi-subject collaborative symbiosis between "chains" and the level of resource sharing and value-added between "chains" in the electricity and hydrogen dual industrial chains, based on the level of subject diversity and value co-creation capability.

6. The index system and evaluation device according to claim 5, characterized in that: The positioning coordination module is specifically configured as follows: Predict the evolution trend of terminal energy consumption structure, and calculate the proportion of hydrogen energy and electricity in terminal energy consumption. The proportion of hydrogen energy in terminal energy consumption is expressed as follows: in, represents the total hydrogen demand in terminal energy consumption, W terminal It represents the total final energy consumption; The proportion of electricity in final energy consumption is expressed as follows: Among them, W ele It represents the total amount of electricity demand in final energy consumption; The specific formula for calculating my country's overall external energy dependence is as follows: Among them, W petroleum represents the total amount of oil consumption in final energy consumption, d petroleum represents the external dependence of oil, W gas represents the total amount of natural gas consumption in terminal energy consumption, D gas Indicates the degree of external dependence on natural gas.

7. The index system and evaluation device according to claim 5, characterized in that: The system collaboration module is specifically configured as follows: Based on the system planning of the synergistic interaction between electricity and hydrogen, the flexibility resource capacity provided by the key element of hydrogen energy to the power system is calculated. The calculation formula is as follows: V flex =V ehpf ·R ehpf +V htu ·R htu ; Among them, V ehpf Represents the installed capacity of the electric hydrogen production facility, V htu represents the installed capacity of the hydrogen-fired unit, R ehpf Indicates the flexible adjustment range of the operating power of the hydrogen production facility, R htu Indicates the flexible adjustment range of the output of the hydrogen-fired unit; Based on the development scale of hydrogen and the evolution trend of supply structure, the space for hydrogen production from electricity to help new energy consumption is calculated. The calculation formula is as follows: in, Indicates the unit power consumption for preparing hydrogen, represents the total amount of hydrogen produced, T green Indicates the proportion of green hydrogen in hydrogen; Calculate the role of green electricity cost reduction in promoting green hydrogen cost reduction, and calculate the contribution rate of green electricity cost reduction to green hydrogen cost reduction based on the green electricity cost reduction. The calculation formula is as follows: Among them, P ele1 Represents the green electricity cost before reducing by 10%, P ele2 represents the cost of green electricity after a 10% reduction, P H1 Green hydrogen costs before green electricity costs are reduced by 10%, P H2 The cost of green hydrogen after reducing the cost of green electricity by 10%; Among them, P ele1 , P ele2 , P H1 , P H2 The relationship between them is shown as follows: Among them, I nv represents the investment and construction cost of hydrogen production equipment and supporting facilities, M H2 Represents the total hydrogen production during the entire life cycle of the equipment, C opex Represents the operation and maintenance costs of hydrogen production equipment per unit of hydrogen; The contribution of the revenue obtained by hydrogen production equipment from participating in the auxiliary service market to the cost reduction of green hydrogen is calculated as follows: Among them, R1 represents the total adjustment benefit of the equipment in the whole life cycle before the increase of 10%, R2 represents the total adjustment benefit of the equipment in the whole life cycle after the increase of 10%, P H3 To adjust the cost of green hydrogen before the revenue increase by 10%, P H4 represents the cost of green hydrogen after adjusting for a 10% increase in revenue; Among them, R1, R2, P H3 , P H4 The relationship between them is shown as follows:

8. The index system and evaluation device according to claim 5, characterized in that: The industrial chain collaboration module is specifically configured as follows: Based on the number of upstream green hydrogen production manufacturers, the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, and the number of manufacturers in the entire hydrogen energy industry chain, the diversity level of the electricity-hydrogen synergy industry chain is calculated. The calculation formula is as follows: Among them, N up Represents the number of upstream green hydrogen production manufacturers, N down Represents the number of downstream hydrogen energy storage and hydrogen power generation application manufacturers, N all Represents the number of manufacturers in the entire hydrogen energy industry chain; Based on the upstream green hydrogen production and the total output value of new energy and related supporting industries driven by it, the downstream hydrogen energy storage, comprehensive utilization of hydrogen and the total output value of related industries driven by it, as well as the total output value of the entire hydrogen energy industry, the electricity-hydrogen synergistic value co-creation capability is calculated. The calculation formula is as follows: Among them, C up Represents the total output value of upstream green hydrogen production and the new energy and related supporting industries it drives, C down Represents the total output value of downstream hydrogen energy storage, comprehensive utilization of hydrogen and related industries, C all Represents the total output value of the entire hydrogen energy industry.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, it implements the indicator system and evaluation method for the degree of electricity-hydrogen synergy as described in any one of claims 1 to 4.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the indicator system and evaluation method for the degree of electricity-hydrogen synergy as described in any one of claims 1 to 4 are implemented.

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