A carbon accounting method for energy storage systems based on carbon loss attribution

Abstract

This invention proposes a carbon metering method for energy storage systems based on carbon loss attribution, comprising: 1. collecting the charging carbon emission factor, charging and discharging power, SOC data, and open-circuit voltage value of the energy storage system; 2. determining whether the carbon loss during charging and discharging of the energy storage system is included in the indirect carbon emissions of the energy storage system; if so, obtaining the indirect carbon emissions of the energy storage system based on the stored carbon and electricity; otherwise, transferring the carbon loss during charging and discharging of the energy storage system to the power grid, thereby obtaining the indirect carbon emissions of the energy storage system based on the carbon and electricity transferred to the power grid during discharging. This invention uses energy storage as a "carrier" of carbon, transferring the carbon loss generated during charging and discharging to the power grid, and reasonably allocating or including it in the indirect carbon emissions of energy storage, thereby improving the carbon emission accounting and metering of the energy storage link in the power system, accurately tracing and allocating carbon, and ensuring the fairness and accuracy of the carbon metering process.

Description

Technical Field

[0001] This invention relates to the field of new energy utilization technology, and specifically to a carbon metering method for energy storage systems based on carbon loss attribution. Background Technology

[0002] Accurate and fair carbon emission accounting is a crucial prerequisite for achieving "dual carbon" goals and promoting green and sustainable development. In the construction of new power systems, the extensive introduction of energy storage systems to form a "source-grid-load-storage" collaborative operation model has become an inevitable trend. As the proportion of photovoltaics and energy storage in power systems continues to rise, the sources of carbon emissions are becoming increasingly complex, placing higher demands on the precise measurement of carbon emissions in the power industry. Currently, most carbon measurement methods for energy storage systems use fixed efficiency values ​​to calculate the amount of electricity stored, which has significant shortcomings in accuracy. Using actual operating efficiency curves is further hampered by complex operating conditions such as charge / discharge current rates, ambient temperature, aging, depth of charge / discharge, and battery consistency. Therefore, exploring a carbon measurement method for energy storage systems that can adapt to various operating conditions and accurately reflect actual operating status is of significant practical importance. Besides accurate measurement, the allocation of carbon emission responsibility is another core issue in carbon flow calculation for energy storage systems. Its essence lies in how to fairly and reasonably define the responsibility boundaries of different stakeholders. Currently, the attribution of carbon emission responsibility is unclear, making it difficult to accurately trace and reasonably allocate the responsibilities that each participating party should bear in carbon reduction. Summary of the Invention

[0003] To address the aforementioned issues, this invention proposes a carbon metering method for energy storage systems based on carbon loss attribution. This method treats energy storage as a "transferor" of carbon, transferring the carbon losses generated during charging and discharging to the power grid and then reasonably allocating or including them in the indirect carbon emissions of energy storage. This improves the carbon emission accounting and metering of the energy storage component of the power system, and enables accurate tracing and allocation of carbon, ensuring fairness and accuracy in the carbon metering process.

[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows: The carbon metering method for energy storage systems based on carbon loss attribution, as described in this invention, is characterized by the following steps: Step 1: Collect the charging carbon emission factor, charging and discharging power, SOC data, and open-circuit voltage value of the energy storage system to calculate the amount of electricity stored inside the energy storage system at a certain moment. Step 2: Determine whether the carbon loss from charging and discharging the energy storage system is included in the indirect carbon emissions of the energy storage system. If yes, proceed to step 3; otherwise, proceed to step 4. Step 3: Calculate the amount of carbon stored in the energy storage system based on the stored electricity and the charging carbon emission factor. Then, based on the stored carbon and electricity, construct carbon emission flow models for the energy storage system under both one-time full charge and discharge and continuous charge and discharge conditions. Based on the stored carbon and the carbon lost during charging and discharging, use the carbon emission flow models to obtain the indirect carbon emissions of the energy storage system. Step 4: Calculate the amount of electricity transferred to the grid during discharge using the discharge power, and calculate the amount of carbon transferred to the grid during discharge using the charging power and the charging carbon emission factor. Based on the amount of carbon and electricity transferred to the grid during discharge, construct carbon emission flow models for the energy storage system under both one-time full charge and discharge and continuous charge and discharge conditions, respectively, to obtain the indirect carbon emissions of the energy storage system.

[0005] The carbon metering method for energy storage systems based on carbon loss attribution described in this invention is also characterized in that step 1 uses equation (1) to calculate... The amount of electricity stored in the battery inside the instant energy storage system : (1) In equation (1), , They are respectively The battery's state of charge and open-circuit voltage value at all times. This refers to the battery's rated capacity.

[0006] Furthermore, in step 3, the carbon emission flow model of the energy storage system under a single complete charge and discharge condition is constructed using equation (2): (2) In equation (2), for Carbon emission factors that are constantly being charged; for Carbon emission factors that are constantly discharging; and They are respectively The amount of electricity and carbon stored in the energy storage system at all times; for The amount of carbon stored in a constant-time energy storage system; For energy storage systems in The carbon flow rate at which the discharge occurs, and Time to The energy storage system is in a charging state at all times. Time to The energy storage system is in a discharging state at any given time, and the energy storage system is in Complete discharge at all times.

[0007] Furthermore, in step 3, the indirect carbon emissions of the energy storage system under a single complete charge and discharge condition are obtained using equation (3): (3) In equation (3), For energy storage systems in Time to Indirect carbon emissions during a single full charge and discharge cycle; and for Time to Carbon loss during charging and carbon loss during discharging within a given time period. and For energy storage systems in The charging power and discharging power at any given time.

[0008] Furthermore, in step 3, the carbon emission flow model of the energy storage system under continuous multiple charge-discharge processes is obtained using equation (4): (4) In equation (4), for Carbon emission factors that are constantly discharging; and for Time and The amount of carbon stored in a time-sensitive energy storage system; for The amount of electricity stored in a real-time energy storage system; for Time's up Between moments The net amount of carbon carried into the energy storage system at any given time; The timing of discharging and recharging the energy storage system. This is the start time of discharge for the energy storage system. This is the time when the energy storage system finishes discharging.

[0009] Furthermore, in step 3, the indirect carbon emissions of the energy storage system under multiple consecutive charge-discharge processes are obtained using equation (5): (5) Furthermore, in step 4, a carbon emission flow model of the energy storage system under a single complete charge and discharge condition is constructed using equation (6), and the indirect carbon emissions of the energy storage system are 0: (6) In equation (6), and The amount of carbon and electricity transferred to the grid, Time to The energy storage system is in a charging state at all times. Time to The energy storage system is in a discharging state at any given time, and the energy storage system is in Complete discharge at all times.

[0010] Furthermore, in step 4, the carbon emission flow model of the energy storage system during multiple consecutive charge-discharge cycles is constructed using equation (7), and the indirect carbon emissions of the energy storage system are... The amount of carbon stored in a time-lapse energy storage system: (7) In equation (7), for Time's up Between moments The amount of carbon newly added to the energy storage system at any time; The timing of discharging and recharging the energy storage system. The moment the energy storage system begins to discharge. This is the time when the energy storage system finishes discharging.

[0011] The present invention provides an electronic device, including a memory and a processor, characterized in that the memory is used to store a program supporting the processor in performing the method described therein, and the processor is configured to execute the program stored in the memory.

[0012] The present invention discloses a computer-readable storage medium storing a computer program, characterized in that the computer program is executed by a processor to perform the steps of the method described thereon.

[0013] Compared with existing methods, the beneficial effects of the present invention are as follows: 1. This invention clarifies the role of energy storage as a "carbon transfer carrier," aiming to transfer the carbon loss generated during charging and discharging to the grid side and allocate it according to two sharing methods: one is to allocate all the carbon loss to the energy storage itself; the other is to allocate the carbon loss to the beneficiary users of energy storage according to the principle of proportional sharing. This overcomes the extremes and unfairness of "full responsibility" or "exemption" in traditional schemes and provides a clear framework for the reasonable sharing of carbon responsibility for energy storage.

[0014] 2. This invention establishes a precise carbon metering model for energy storage based on real-time SOC. By incorporating battery state of charge and open-circuit voltage data, the actual stored electricity within the energy storage system is calculated, eliminating accumulated errors and avoiding the significant errors caused by traditional methods that rely on fixed charge and discharge efficiencies. This significantly improves the metering accuracy of carbon flow and carbon emission factors. Attached Figure Description

[0015] Figure 1This is a detailed schematic diagram of the carbon content of the energy storage system in this invention; Figure 2 This is a schematic diagram of the energy storage system in this invention undergoing multiple continuous charge and discharge cycles; Figure 3 This is a graph showing the carbon content relationship between carbon loss during energy storage charging and discharging and its indirect carbon emissions in this invention. Figure 4 This is a graph showing the carbon content relationship in this invention, where carbon loss during energy storage charging and discharging is not included in indirect carbon emissions. Figure 5 This is a comparison chart of carbon emission factors under three different schemes in this invention; Figure 6 This is a comparison chart of the indirect carbon emissions of the energy storage system under three different schemes in this invention. Detailed Implementation

[0016] The specific embodiments and working principles of the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Based on the carbon transfer characteristics during charging and discharging, this invention proposes whether the indirect carbon emissions of energy storage systems should consider charging and discharging losses, and clarifies the physical meaning of the carbon loss attribution measurement method under the overall grid carbon allocation, truly elucidating the core connotation of energy storage's role as a "carbon transporter." Specifically, it refines the carbon content of energy storage systems into the amount of carbon injected during charging. F ch Carbon loss during charging F loss,ch Carbon storage F es Remaining carbon content after discharge F res Discharge carbon loss F loss,dis and the amount of carbon released F dis , specifically Figure 1 As shown, the carbon input represents indirect carbon emissions transferred from the power grid. Specifically, stored carbon, which involves transferring carbon from the grid to the energy storage system, should be attributed to the energy storage system's indirect carbon emissions. Released carbon, which involves transferring stored carbon to the grid for load consumption, should be included in the load's indirect carbon emissions according to the sharing principle. The attribution of these two types of carbon is undisputed. However, the carbon loss during charging and discharging, which represents carbon generated by energy loss during charging and discharging, is debatable in terms of attribution. Therefore, a carbon metering method for energy storage systems based on carbon loss attribution is proposed, which proceeds as follows: Step 1: Collect the charging carbon emission factor, charging and discharging power, SOC data, and open-circuit voltage value of the energy storage system to calculate the amount of electricity stored inside the energy storage system at a certain moment. in The amount of electricity stored in the battery inside the instant energy storage system : (1) In equation (1), , They are respectively The battery's state of charge and open-circuit voltage value at all times. This refers to the battery's rated capacity.

[0018] Step 2: Determine whether the carbon loss during the charging and discharging of the energy storage system is included in the indirect carbon emissions of the energy storage system. If so, transfer the carbon loss during the charging and discharging process of the energy storage system to the grid and include it in the indirect carbon emissions of the load according to the proportional sharing principle. The indirect carbon emissions of the energy storage system itself are the carbon stored inside the energy storage system, and proceed to Step 3. Otherwise, do not transfer the carbon loss during the charging and discharging process of the energy storage system to the grid, but include it together with the carbon stored in the energy storage system in the indirect carbon emissions of the energy storage system, and proceed to Step 4. Step 3: Calculate the carbon content stored in the energy storage system based on the stored electricity and the charging carbon emission factor. Then, based on the stored carbon content and electricity, construct carbon emission flow models for both a single full charge / discharge cycle and continuous charge / discharge cycles. Finally, based on the stored carbon content and the carbon lost during charging and discharging, use the carbon emission flow models to derive the indirect carbon emissions of the energy storage system. Specifically, this includes: A carbon emission flow model for an energy storage system under a single full charge and discharge condition is constructed using equation (2): (2) In equation (2), for Carbon emission factors that are constantly being charged; for Carbon emission factors that are constantly discharging; and They are respectively The amount of electricity and carbon stored in the energy storage system at all times; for The amount of carbon stored in a constant-time energy storage system; For energy storage systems in The carbon flow rate at which the discharge occurs, and Time to The energy storage system is in a charging state at all times. Time to The energy storage system is in a discharging state at any given time, and the energy storage system is in Complete discharge at all times.

[0019] It can be seen that under a single complete charge and discharge cycle, the carbon emission factor during discharge is equal to the carbon emission factor during charging. Therefore, the indirect carbon emissions of the energy storage system are the carbon losses during charge and discharge, i.e.: (3) In equation (3), For energy storage systems in Time to Indirect carbon emissions during a single full charge and discharge cycle; and for Time to Carbon loss during charging and carbon loss during discharging within a given time period. and For energy storage systems in The charging power and discharging power at any given time; Real-world energy storage systems typically operate by automatically adjusting power according to dispatch instructions or disturbance demands. Therefore, we further analyze the carbon emission model during multiple consecutive charge and discharge processes. Figure 2 This is a schematic diagram of multiple consecutive charge-discharge cycles. The timing of discharging and recharging the energy storage system. This is the start time of discharge for the energy storage system. Let be the end time of discharge for the energy storage system. Using equation (4), a carbon emission flow model for the energy storage system under continuous charge and discharge conditions is constructed: (4) In equation (4), for Carbon emission factors that are constantly discharging; and for Time and The amount of carbon stored in a time-sensitive energy storage system; for The amount of electricity stored in a real-time energy storage system; for Time's up Between moments The net amount of carbon carried into the energy storage system at any given time; Storing carbon at all times It consists of two parts, one of which is the end of the previous discharge. The other is to store carbon at all times. arrive The actual amount of carbon stored during the time period.

[0020] Figure 3 A graph showing the carbon relationship between the carbon loss during charging and discharging of energy storage systems and the indirect carbon emissions of energy storage systems, where, The total amount of carbon stored in the system at any given time is Original carbon storage at time and arrive The sum of newly added carbon at any time, minus The remaining carbon stored at any given time and the carbon lost during discharge are the actual carbon transferred to the grid. It can be seen that the indirect carbon emissions of the energy storage system consist of three parts: carbon loss during charging, carbon loss during discharging, and the remaining carbon after discharging, as shown in equation (5): (5) In equation (5), The core idea of ​​the calculation is the sum of the product of the amount of electricity charged in each time period minus the net amount of electricity stored and the charging carbon emission factor for the corresponding time period. The core idea of ​​computation is arrive The product of the net reduction in stored electricity during the discharge period and the electricity released into the grid, plus the corresponding discharge carbon emission factor.

[0021] Step 4: Calculate the amount of electricity transferred to the grid during discharge using the discharge power, and calculate the amount of carbon transferred to the grid during discharge using the charging power and the charging carbon emission factor. Based on the amount of carbon and electricity transferred to the grid during discharge, construct carbon emission flow models for the energy storage system under both one-time full charge and discharge and continuous charge and discharge conditions, respectively, to obtain the indirect carbon emissions of the energy storage system.

[0022] When calculating the discharge carbon emission factor, if the stored carbon and stored electricity are used, the carbon and electricity lost during charging and discharging, which are difficult to quantify, need to be removed, increasing the complexity of the calculation. However, considering that the carbon and electricity lost during charging and discharging have been completely transferred to the grid, and are included in the indirect carbon emissions of the load according to the proportional sharing principle, this invention proposes to use the carbon and electricity transferred to the grid during discharge to calculate the discharge carbon emission factor. The carbon emission flow model of the energy storage system under a one-time full charge and discharge condition is constructed using equation (6): (6) and The amount of carbon and electricity transferred to the grid, and Time to The energy storage system is in a charging state at all times. Time to The energy storage system is in a discharging state at any given time, and the energy storage system is in Complete discharge at all times.

[0023] In the case of a single complete charge and discharge cycle, since energy storage does not store carbon, the indirect carbon emissions of energy storage during the charge and discharge period are... It is 0.

[0024] Similarly, using equation (7), a carbon emission flow model for the energy storage system under continuous charge and discharge conditions is constructed: (7) In equation (7), for Time's up Between moments The amount of carbon newly added to the energy storage system at any time; The timing of discharging and recharging the energy storage system. The moment the energy storage system begins to discharge. This is the time when the energy storage system finishes discharging.

[0025] Figure 4 A graph showing the carbon relationship between the charging and discharging carbon losses of energy storage systems and the indirect carbon emissions of energy storage systems. Time to The amount of carbon transferred to the grid at any given time is Carbon stored at all times and arrive The sum of carbon input from the grid during the time period, minus the carbon stored at the end of the discharge. This reflects that the carbon transferred to the grid consists of three parts: actual carbon released, carbon lost during discharge, and carbon lost during charging. Furthermore, the amount of electricity transferred to the grid is the actual measured discharge amount. Therefore, without considering the indirect carbon emissions of the energy storage system, the carbon losses during charging and discharging are transferred to the grid by increasing the discharge carbon emission factor. The indirect carbon emissions of the energy storage system itself are only the carbon remaining after discharge. for .

[0026] In this embodiment, an electronic device includes a memory and a processor. The memory stores a program that supports the processor in executing the above-described method, and the processor is configured to execute the program stored in the memory.

[0027] In this embodiment, a computer-readable storage medium stores a computer program, which is executed by a processor to perform the steps of the above method.

[0028] Example: Based on data from a typical 24-hour period on a given day, the energy storage system has a rated capacity of 30 kWh. Table 1 shows the relevant parameters of the energy storage system, including the SOC change, open-circuit voltage, carbon potential of the energy storage nodes, and charging and discharging power obtained from the BMS system over a day. Three different schemes are used to compare the differences in their energy storage carbon emission factors.

[0029] 1) Scheme 1: Carbon metering method based on efficiency measurement, with a fixed charging and discharging efficiency of 0.8.

[0030] 2) Option 2: Carbon metering method that excludes carbon losses from energy storage charging and discharging from indirect carbon emissions from energy storage. 3) Option 3: Carbon metering method for including carbon losses during energy storage charging and discharging into indirect carbon emissions from energy storage. Table 1

[0031] Figure 5 This example illustrates the variation of the carbon emission factor for the same energy storage system under three different metering schemes within a single day. The charging phases at times 17:17 and 12:17 are determined by the external power grid; therefore, in this example, the charging carbon emission factor is the same for all three schemes, equal to the nodal carbon potential of the energy storage node. The carbon accumulated within the energy storage system is the result of multiple charging processes. During the discharging phases (times 7:12 and 17:24), the corresponding discharging carbon emission factors differ depending on the scheme. No new carbon flows into the energy storage system during discharging, so its discharging carbon emission factor is a fixed value. The main differences between the three schemes lie in the calculation method of the discharging carbon emission factor and the carbon responsibility borne by the energy storage system, but this does not change the overall trend of the energy storage system's carbon emission factor.

[0032] The results show that: Scheme 1 (carbon accounting method based on efficiency measurement) has discharge carbon emission factors of 0.7781 kgCO2 / kWh and 0.7723 kgCO2 / kWh during the 7-12 and 17-24 periods, respectively. This scheme also distributes losses, but the use of a fixed efficiency leads to errors in the calculation of stored energy, resulting in a slightly lower discharge carbon emission factor than Scheme 2. Scheme 2 (carbon measurement method that does not include indirect carbon emissions from energy storage due to carbon losses during energy storage charging and discharging) has the highest discharge carbon emission factor, at 0.7788 kgCO2 / kWh during the 7-12 period and 0.7723 kgCO2 / kWh during the 19-24 period. The carbon emission factor for the first period is 0.7730 kg CO2 / kWh. The main reason is that this allocation method increases the carbon emission factor for discharge, thus allocating the carbon emissions corresponding to charging and discharging losses to users who benefit from energy storage. Scheme 3 (the carbon metering method that includes carbon losses from energy storage charging and discharging into the indirect carbon emissions of energy storage) has the lowest carbon emission factor for discharge, which is 0.7751 kg CO2 / kWh for the period from 7 to 12 and 0.7721 kg CO2 / kWh for the period from 19 to 24. This is because energy storage takes responsibility for the carbon corresponding to the losses, reducing the amount of carbon transmitted to the grid, while the amount of discharge remains unchanged, thus reducing the carbon emission factor for discharge.

[0033] Figure 6This paper compares the changes in indirect carbon emissions of a single energy storage system under three different carbon metering schemes throughout the day. During the charging period, the indirect carbon emissions increase as the stored electricity and corresponding carbon content continuously increase. At this time, all three schemes calculate carbon responsibility based on charging power and the charging carbon emission factor, resulting in the same indirect carbon emission value for this period. During the discharging period, the energy storage system transfers carbon back to the grid, thus gradually reducing indirect carbon emissions. Scheme 1 calculates indirect carbon emissions by the difference between the released and charged carbon; Scheme 2 calculates indirect carbon emissions by the carbon remaining after discharging; and Scheme 3 calculates indirect carbon emissions by the carbon remaining after discharging plus losses during charging and discharging. Therefore, Scheme 3 has higher indirect carbon emissions than Scheme 2. Ideally, the difference between released and charged carbon in Scheme 1 would be the remaining carbon after discharging. However, Scheme 1 uses a fixed efficiency value, leading to errors in the calculation of charged and released electricity, thus making the difference between the charged and released carbon inconsistent with the carbon stored in Scheme 2.

Claims

1. A carbon metering method for energy storage systems based on carbon loss attribution, characterized in that, Includes the following steps: Step 1: Collect the charging carbon emission factor, charging and discharging power, SOC data, and open-circuit voltage value of the energy storage system to calculate the amount of electricity stored inside the energy storage system at a certain moment. Step 2: Determine whether the carbon loss from charging and discharging the energy storage system is included in the indirect carbon emissions of the energy storage system. If so, proceed to Step 3. Otherwise, proceed to step 4; Step 3: Calculate the amount of carbon stored in the energy storage system based on the stored electricity and the charging carbon emission factor. Then, based on the stored carbon and electricity, construct carbon emission flow models for the energy storage system under both one-time full charge and discharge and continuous charge and discharge conditions. Based on the stored carbon and the carbon lost during charging and discharging, use the carbon emission flow models to obtain the indirect carbon emissions of the energy storage system. Step 4: Calculate the amount of electricity transferred to the grid during discharge using the discharge power, and calculate the amount of carbon transferred to the grid during discharge using the charging power and the charging carbon emission factor. Based on the amount of carbon and electricity transferred to the grid during discharge, construct carbon emission flow models for the energy storage system under both one-time full charge and discharge and continuous charge and discharge conditions, respectively, to obtain the indirect carbon emissions of the energy storage system.

2. The carbon metering method for energy storage systems based on carbon loss attribution according to claim 1, characterized in that, In step 1, equation (1) is used to calculate... The amount of electricity stored in the battery inside the instant energy storage system : (1) In equation (1), , They are respectively The battery's state of charge and open-circuit voltage value at all times. This refers to the battery's rated capacity.

3. The carbon metering method for energy storage systems based on carbon loss attribution according to claim 1, characterized in that, In step 3, the carbon emission flow model of the energy storage system under a single full charge and discharge condition is constructed using equation (2): (2) In equation (2), for Carbon emission factors that are constantly being charged; for Carbon emission factors that are constantly discharging; and They are respectively The amount of electricity and carbon stored in the energy storage system at all times; for The amount of carbon stored in a constant-time energy storage system; For energy storage systems in The carbon flow rate at which the discharge occurs, and Time to The energy storage system is in a charging state at all times. Time to The energy storage system is in a discharging state at any given time, and the energy storage system is in Complete discharge at all times.

4. The carbon metering method for energy storage systems based on carbon loss attribution according to claim 1, characterized in that, In step 3, the indirect carbon emissions of the energy storage system under a single complete charge and discharge condition are obtained using equation (3): (3) In equation (3), For energy storage systems in Time to Indirect carbon emissions during a single full charge and discharge cycle; and for Time to Carbon loss during charging and carbon loss during discharging within a given time period. and For energy storage systems in The charging power and discharging power at any given time.

5. The carbon metering method for energy storage systems based on carbon loss attribution according to claim 1, characterized in that, In step 3, the carbon emission flow model of the energy storage system under continuous multiple charge and discharge processes is obtained using equation (4): (4) In equation (4), for Carbon emission factors that are constantly discharging; and for Time and The amount of carbon stored in a time-sensitive energy storage system; for The amount of electricity stored in a real-time energy storage system; for Time's up Between moments The net amount of carbon carried into the energy storage system at any given time; The timing of discharging and recharging the energy storage system. This is the start time of discharge for the energy storage system. This is the time when the energy storage system finishes discharging.

6. The carbon metering method for energy storage systems based on carbon loss attribution according to claim 1, characterized in that, In step 3, the indirect carbon emissions of the energy storage system under multiple consecutive charge-discharge processes are obtained using equation (5): (5)。 7. The carbon metering method for energy storage systems based on carbon loss attribution according to claim 1, characterized in that, In step 4, equation (6) is used to construct a carbon emission flow model of the energy storage system under a single complete charge and discharge condition, and the indirect carbon emissions of the energy storage system are 0: (6) In equation (6), and The amount of carbon and electricity transferred to the grid, Time to The energy storage system is in a charging state at all times. Time to The energy storage system is in a discharging state at any given time, and the energy storage system is in Complete discharge at all times.

8. The carbon metering method for energy storage systems based on carbon loss attribution according to claim 1, characterized in that, In step 4, equation (7) is used to construct a carbon emission flow model of the energy storage system during multiple consecutive charge and discharge cycles, and the indirect carbon emissions of the energy storage system are... The amount of carbon stored in a time-lapse energy storage system: (7) In equation (7), for Time's up Between moments The amount of carbon newly added to the energy storage system at any time; The timing of discharging and recharging the energy storage system. The moment the energy storage system begins to discharge. This is the time when the energy storage system finishes discharging.

9. An electronic device, comprising a memory and a processor, characterized in that, The memory is used to store a program that supports a processor in executing the method of any one of claims 1-8, the processor being configured to execute the program stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The computer program is executed by the processor to perform the steps of the method according to any one of claims 1-8.

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