Method, device, equipment and storage medium for determining carbon emissions of power system

Abstract

The present application relates to a method and device for determining carbon emissions of an electric power system, which effectively improves the accuracy of determining carbon emissions of an electric power system. The method includes: determining an energy storage node in the electric power system whose working state at the current moment is a discharge state, taking the carbon emissions contained in the unit stored electricity of the energy storage node at the previous moment as the carbon emissions contained in the unit stored electricity at the current moment, and determining the carbon emission intensity of the energy storage node; determining the first carbon emissions of each node in the electric power system in the discharge state at the current moment according to the carbon emission intensity and load information of the energy storage node and the discharge node in the discharge state; determining the second carbon emissions of each load node in the electric power system and the energy storage node whose working state is a storage state at the current moment according to the first carbon emissions; determining the total carbon emissions of the electric power system at the current moment according to the first carbon emissions and the second carbon emissions, until the total carbon emissions at each moment are determined.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to a method, device, computer equipment, storage medium and computer program product for determining carbon emissions of an electric power system. Background Art

[0002] With the continuous development of power grid technology, in order to guide electricity users to use electricity more efficiently and reduce carbon emissions, determine the impact of different links in the power system on overall low-carbon emission reduction, and promote the formation of an overall low-carbon power system, it has become increasingly popular to track the carbon emissions during electricity consumption and power generation at each node in the power grid.

[0003] In related technologies, when determining the carbon emissions of a power system, the energy composition of the currents flowing through the discharge nodes and load nodes in the power system can be analyzed through current or carbon flow tracking methods. After combining the impact of the carbon emissions corresponding to network losses, the carbon trace intensity distribution and carbon emission intensity of the discharge nodes and load nodes in the power system are obtained, and the total carbon emissions of the power system are determined based on the carbon emission intensity.

[0004] However, when there are energy storage nodes in the power system, the total carbon emissions estimated by the above method often differ greatly from the actual total carbon emissions of the power system, making it difficult to determine the total carbon emissions. Summary of the invention

[0005] Based on this, it is necessary to provide a method, device, computer equipment, computer-readable storage medium and computer program product for determining carbon emissions of an electric power system in response to the above-mentioned technical problems.

[0006] In a first aspect, the present application provides a method for determining carbon emissions of a power system. The method comprises:

[0007] Obtain the load information of each discharge node and energy storage node in the power system at the current moment;

[0008] Determine an energy storage node in the power system whose working state at the current moment is a discharging state, use the carbon emissions per unit of stored electricity of the energy storage node at the previous moment as the carbon emissions per unit of stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions per unit of stored electricity;

[0009] Acquire the carbon emission intensity of the discharge node, and determine the first carbon emission amount of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0010] Determine, based on the first carbon emission, a second carbon emission at the current moment of each load node and an energy storage node in the power system whose working state is a power storage state;

[0011] The total carbon emissions of the power system at the current moment are determined based on the first carbon emissions and the second carbon emissions, and when the next moment comes, the process returns to execute the process of obtaining the load information of each discharge node and energy storage node in the power system at the current moment until the total carbon emissions at each preset moment are determined.

[0012] In a second aspect, the present application also provides a device for determining carbon emissions of a power system. The device comprises:

[0013] The load information acquisition module is used to obtain the load information of each discharge node and energy storage node in the power system at the current moment;

[0014] The energy storage node carbon emission intensity determination module is used to determine the energy storage node whose working state at the current moment in the power system is the discharging state, use the carbon emissions contained in the unit storage electricity of the energy storage node at the previous moment as the carbon emissions contained in the unit storage electricity at the current moment, and determine the carbon emission intensity of the energy storage node according to the carbon emissions contained in the unit storage electricity;

[0015] A first carbon emission acquisition module is used to acquire the carbon emission intensity of the discharge node, and determine the first carbon emission of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0016] A second carbon emission acquisition module is used to determine the second carbon emission of each load node and the energy storage node whose working state is the power storage state in the power system at the current moment according to the first carbon emission;

[0017] A total carbon emissions determination module is used to determine the total carbon emissions of the power system at the current moment based on the first carbon emissions and the second carbon emissions, and return to execute the acquisition of load information of each discharge node and energy storage node in the power system at the current moment when the next moment comes, until the total carbon emissions at each preset moment are determined.

[0018] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0019] Obtain the load information of each discharge node and energy storage node in the power system at the current moment;

[0020] Determine an energy storage node in the power system whose working state at the current moment is a discharging state, use the carbon emissions per unit of stored electricity of the energy storage node at the previous moment as the carbon emissions per unit of stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions per unit of stored electricity;

[0021] Acquire the carbon emission intensity of the discharge node, and determine the first carbon emission amount of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0022] Determine, based on the first carbon emission, a second carbon emission at the current moment of each load node and an energy storage node in the power system whose working state is a power storage state;

[0023] The total carbon emissions of the power system at the current moment are determined based on the first carbon emissions and the second carbon emissions, and when the next moment comes, the process returns to execute the process of obtaining the load information of each discharge node and energy storage node in the power system at the current moment until the total carbon emissions at each preset moment are determined.

[0024] In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0025] Obtain the load information of each discharge node and energy storage node in the power system at the current moment;

[0026] Determine an energy storage node in the power system whose working state at the current moment is a discharging state, use the carbon emissions per unit of stored electricity of the energy storage node at the previous moment as the carbon emissions per unit of stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions per unit of stored electricity;

[0027] Acquire the carbon emission intensity of the discharge node, and determine the first carbon emission amount of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0028] Determine, based on the first carbon emission, a second carbon emission at the current moment of each load node and an energy storage node in the power system whose working state is a power storage state;

[0029] The total carbon emissions of the power system at the current moment are determined based on the first carbon emissions and the second carbon emissions, and when the next moment comes, the process returns to execute the process of obtaining the load information of each discharge node and energy storage node in the power system at the current moment until the total carbon emissions at each preset moment are determined.

[0030] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0031] Obtain the load information of each discharge node and energy storage node in the power system at the current moment;

[0032] Determine an energy storage node in the power system whose working state at the current moment is a discharging state, use the carbon emissions per unit of stored electricity of the energy storage node at the previous moment as the carbon emissions per unit of stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions per unit of stored electricity;

[0033] Acquire the carbon emission intensity of the discharge node, and determine the first carbon emission amount of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0034] Determine, based on the first carbon emission, a second carbon emission at the current moment of each load node and an energy storage node in the power system whose working state is a power storage state;

[0035] The total carbon emissions of the power system at the current moment are determined based on the first carbon emissions and the second carbon emissions, and when the next moment comes, the process returns to execute the process of obtaining the load information of each discharge node and energy storage node in the power system at the current moment until the total carbon emissions at each preset moment are determined.

[0036] The above-mentioned method, device, computer equipment, storage medium and computer program product for determining the carbon emissions of the power system can obtain the load information of each discharge node and energy storage node in the power system at the current moment, determine the energy storage node in the power system whose working state is the discharge state at the current moment, use the carbon emissions contained in the unit storage electricity of the energy storage node at the previous moment as the carbon emissions contained in the unit storage electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions contained in the unit storage electricity, and then obtain the carbon emission intensity of the discharge node, and determine the first carbon emissions of each node in the power system in the discharge state at the current moment based on the carbon emission intensity and load information of the energy storage node in the discharge state and the discharge node, determine the second carbon emissions of each load node in the power system and the energy storage node whose working state is the storage state at the current moment based on the first carbon emissions, determine the total carbon emissions of the power system at the current moment based on the first carbon emissions and the second carbon emissions, and return to execute the acquisition of the load information of each discharge node and energy storage node in the power system at the next moment until the total carbon emissions at each preset moment are determined. In this embodiment, by determining the working status of the energy storage nodes in the power system at different times in real time and dividing them into discharge nodes or load nodes, it is possible to fully and accurately identify the impact of the release and storage of energy by the energy storage nodes at different times on the carbon emissions of the power system, and correctly measure the indirect carbon emissions contained in the energy storage nodes during the input or output of electricity, thereby effectively improving the accuracy of determining the carbon emissions of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a flow chart of a method for determining carbon emissions of a power system in an embodiment;

[0038] Figure 2 A schematic diagram of a flow chart of a step of determining a node load in an embodiment;

[0039] Figure 3 A schematic flow chart of a step of determining a second carbon emission amount in an embodiment;

[0040] Figure 4 A schematic flow chart of a method for determining carbon emissions of a power system in another embodiment;

[0041] Figure 5 is a structural block diagram of a device for determining carbon emissions of a power system in one embodiment;

[0042] Figure 6 is an internal structure diagram of a computer device in one embodiment;

[0043] Figure 7FIG. 4 is a diagram showing the internal structure of a computer device in another embodiment. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0045] In one embodiment, Figure 1 As shown, a method for determining carbon emissions of a power system is provided. This embodiment uses the method applied to a terminal as an example. It can be understood that the method can also be applied to a server, and can also be applied to a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. The terminal can be, but is not limited to, various personal computers, laptops, smart phones, and tablet computers; the server can be implemented as an independent server or a server cluster consisting of multiple servers.

[0046] In this embodiment, the method includes the following steps:

[0047] S101, obtaining load information of each discharge node and energy storage node in the power system at the current moment.

[0048] In practical applications, the power system may include multiple nodes. The power sources inside or outside the power system can transmit current to multiple nodes through the branches in the power system. The power system may include load nodes, discharge nodes and energy storage nodes. The load nodes may also be called load members, which are nodes with fixed electricity consumption in the power system; the discharge nodes may also be called power generation members, which are nodes with fixed power supply in the power system; and the energy storage nodes may also be called energy storage members, which have power generation and power storage functions and can play different roles in different time periods, that is, when the working state is the power generation state, it can be used as a power generation node, and when the working state is the power storage state, it can be used as a load node.

[0049] In this step, the load information of each discharge node and energy storage node in the power system at the current moment can be obtained.

[0050] S102, determine the energy storage node in the power system whose working state at the current moment is the discharging state, use the carbon emissions contained in the unit stored electricity of the energy storage node at the previous moment as the carbon emissions contained in the unit stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions contained in the unit stored electricity.

[0051] As an example, the working state of the energy storage node may include a discharging state and a power storage state.

[0052] In specific implementation, the energy storage nodes in the power system can be in different working states at different times. For example, it can be in the power storage state at the previous moment and in the discharge state at the current moment, or it can be in the discharge state or the power storage state at multiple consecutive moments.

[0053] In this step, since the working state of each energy storage node may change at different times, for each energy storage node in the power system, the working state of each energy storage node in the power system at the current moment can be obtained, and the energy storage nodes in the power system whose working state at the current moment is the discharging state are determined, and the carbon emissions contained in the unit storage electricity of the energy storage node at the previous moment are used as the carbon emissions contained in the unit storage electricity at the current moment, and the carbon emission intensity of the energy storage node is determined based on the carbon emissions contained in the unit storage electricity. For example, the carbon emissions contained in the unit storage electricity can be used as the carbon emission intensity of the energy storage node.

[0054] S103, obtaining the carbon emission intensity of the discharge node, and determining the first carbon emission amount of each node in the discharge state in the power system at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information.

[0055] After obtaining the carbon emission intensity of the energy storage node in the discharging state, the carbon emission intensity of the discharging node can also be obtained, and based on the carbon emission intensity of the energy storage node and the discharging node in the discharging state and the load information, the first carbon emissions of each node in the discharging state in the power system at the current moment can be determined.

[0056] Specifically, for a node that is discharging electricity in the power system at the current moment, the carbon emission of the node can be determined based on the product of the carbon emission intensity of the node and the load information. To facilitate the distinction from the carbon emission of a node that is using electricity or storing electricity, the carbon emission of the node can be referred to as the first carbon emission. Gi It can be calculated by the following formula:

[0057] e Gi =EF Gi P Gi

[0058] Among them, e Gi is the first carbon emission of the discharging node or the energy storage node in the discharging state at the current moment, which can also be called the carbon emission per unit time of the corresponding node. Gi is the carbon emission intensity of the discharging node or the energy storage node in the discharging state, P Gi It is the node load of the discharging node or the energy storage node in the discharging state.

[0059] S104: Determine, based on the first carbon emission, a second carbon emission of each load node in the power system and an energy storage node whose working state is a power storage state at the current moment.

[0060] After the first carbon emission is obtained, the second carbon emission of each load node in the power system and the energy storage node whose working state is the power storage state at the current moment can be determined according to the first carbon emission.

[0061] When determining the carbon emissions of a power system containing energy storage nodes, the relevant technology only considers the impact of discharge nodes and load nodes on the carbon emission intensity of the nodes, and ignores the impact of the energy storage link on the measurement and tracking of carbon emissions in the power system. In the specific implementation, the energy storage node involves the storage and release of energy, and carbon emissions are related to energy. Therefore, when measuring and tracking the carbon emissions of a power system containing energy storage nodes, this embodiment can reasonably consider the storage and discharge process of the energy storage node based on the working status of the energy storage node at the current moment, and divide it into discharge nodes or load nodes through steps S102-S104 for calculation, and correctly measure the indirect carbon emissions contained in its input or output electricity.

[0062] S105, determining the total carbon emissions of the power system at the current moment based on the first carbon emissions and the second carbon emissions, and returning to execute to obtain the load information of each discharge node and energy storage node in the power system at the current moment when the next moment comes, until the total carbon emissions at each preset moment are determined.

[0063] After obtaining the first carbon emissions and the second carbon emissions, the total carbon emissions of the power system at the current moment can be determined based on the first carbon emissions and the second carbon emissions. For example, the total carbon emissions of the power system at the current moment can be determined based on the sum of the first carbon emissions of each discharge node and the energy storage node in the discharge state and the second carbon emissions of each load node and the energy storage node in the power storage state.

[0064] Furthermore, when the next moment comes, the process may return to step S101 and re-execute the steps of determining the total carbon emissions in S101-S105 until the total carbon emissions at each preset moment are determined.

[0065] In this embodiment, the load information of each discharge node and energy storage node in the power system at the current moment can be obtained, the energy storage node whose working state is the discharge state at the current moment in the power system is determined, the carbon emissions contained in the unit stored electricity of the energy storage node at the previous moment is used as the carbon emissions contained in the unit stored electricity at the current moment, and the carbon emission intensity of the energy storage node is determined according to the carbon emissions contained in the unit stored electricity, and then the carbon emission intensity of the discharge node is obtained, and the first carbon emissions of each node in the discharge state in the power system at the current moment are determined according to the carbon emission intensity and load information of the energy storage node in the discharge state and the discharge node, and the second carbon emissions of each load node and the energy storage node whose working state is the storage state in the power system at the current moment are determined according to the first carbon emissions, and the total carbon emissions of the power system at the current moment are determined according to the first carbon emissions and the second carbon emissions, and when the next moment comes, the execution returns to obtain the load information of each discharge node and energy storage node in the power system at the current moment until the total carbon emissions at each preset moment are determined. In this embodiment, by determining the working status of the energy storage nodes in the power system at different times in real time and dividing them into discharge nodes or load nodes, it is possible to fully and accurately identify the impact of the release and storage of energy by the energy storage nodes at different times on the carbon emissions of the power system, and correctly measure the indirect carbon emissions contained in the energy storage nodes during the input or output of electricity, thereby effectively improving the accuracy of determining the carbon emissions of the power system.

[0066] In one embodiment, Figure 2 As shown, S101 obtains the load information of each discharge node and energy storage node in the power system at the current moment, which may include the following steps:

[0067] S201, acquiring power flow status information of the power system at the current moment, and determining the node load of each discharge node and load node in the power system according to the power flow status information.

[0068] Specifically, the flow state information may be information describing the flow situation of the power system at the current moment, wherein the flow may characterize the steady-state distribution of voltage and power (such as active power and reactive power) at each node on different branches when the current flows from the power source through each node in the power system. As an example, the flow state information may include the magnitude, direction, starting node, and end node of the flow of each branch in the power system.

[0069] In practical applications, the power system's current state information can be obtained, and the node loads of each discharge node and energy storage node in the power system can be determined based on the power state information. In specific implementations, the power flow size and power flow direction between any two nodes in the power system can be determined based on the power flow state information, where any two nodes can be adjacent or non-adjacent nodes, or nodes of the same type or different types, such as the power flow size and power flow direction between a load node and an energy storage node, and the power flow size and power flow direction between a discharge node and a discharge node. Then, the node loads of each discharge node, energy storage node, and load node can be determined based on the power flow size and power flow direction, and the node loads of the discharge node and load node can be obtained therefrom.

[0070] In an optional embodiment, the initial parameters of the power system can be pre-input into the terminal. The initial parameters may include the node position of each discharge node included in the power system, the node number of the discharge nodes, the node position of the load nodes, the node number of the load nodes, the node position of the energy storage node, and the node number of the energy storage node. Then, for the current moment, the terminal can obtain the power flow status information of the power system at the current moment, and determine the node load of each discharge node and energy storage node at different positions in the power system based on the power flow status information and the pre-input initial parameters.

[0071] S202: Obtain load information of each discharge node and energy storage node based on the node load of each discharge node and energy storage node.

[0072] In this step, after the node loads of the respective discharge nodes and energy storage nodes are acquired, the node loads of the respective discharge nodes and energy storage nodes may be used as the load information of the respective discharge nodes and energy storage nodes.

[0073] In this embodiment, the power flow status information of the power system at the current moment can be obtained, and the node load of each discharge node and energy storage node in the power system can be determined based on the power flow status information, and then the load information of each discharge node and energy storage node can be obtained based on the node load of each discharge node and energy storage node. The energy flow direction in the power system can be determined in combination with the power flow status in the power system, and reliable load information can be determined based on this.

[0074] In one embodiment, if the working state of the energy storage node at the current moment is the discharging state, the carbon emissions per unit of stored electricity at the current moment can be directly determined based on the carbon emissions per unit of stored electricity at the previous moment. In another case, if the working state of the energy storage node at the current moment is the discharging state, the working state of the energy storage node at the previous moment was the storage state, the carbon emissions per unit of stored electricity of the energy storage node in the storage state can be determined by the following steps:

[0075] Determine the storage power and carbon emissions per unit storage power of the energy storage node in the power storage state at the previous moment; determine the carbon emissions per unit storage power of the energy storage node at the current moment according to the storage power and carbon emissions per unit storage power of the energy storage node at the previous moment and a preset first mapping relationship, as the carbon emissions per unit storage power of the energy storage node in the power storage state;

[0076] Among them, the carbon emissions contained in the unit storage electricity at the first moment can be a preset value.

[0077] The first mapping relationship can be as follows:

[0078]

[0079] EF(t-1) is the carbon emission per unit of stored electricity at the previous moment, EF(t) is the carbon emission per unit of stored electricity at the current moment; SOC(t-1) is the stored electricity at the previous moment; μ ch is the energy conversion efficiency during electricity storage; e storage is the carbon emission when the energy storage node obtains electricity from the power system, that is, the second carbon emission, such as the carbon emission when obtaining electricity from the power system per unit time; storage is the amount of electricity obtained by the energy storage node from the power system; in the specific implementation, μ ch can be a preset value, and e storage It can change accordingly with the change of power flow status information in the power system.

[0080] Specifically, the working state of the energy storage node at multiple moments t0, t1, t2...tn can change at least once. If the working state of the energy storage node at the current moment t is the discharge state, the carbon emissions per unit stored electricity at the moment t-1 can be directly obtained to determine the carbon emissions per unit stored electricity at the current moment; if the working state at the moment t-1 is the electricity storage state, the stored electricity and the carbon emissions per unit stored electricity of the energy storage node at the moment t-2 (i.e., the previous moment relative to the current moment (t-1)) can be obtained, and then the carbon emissions per unit stored electricity of the energy storage node at the current moment (i.e., moment t-1) can be determined based on the stored electricity and the carbon emissions per unit stored electricity of the energy storage node at the previous moment (i.e., moment t-2) and the preset first mapping relationship.

[0081] In this embodiment, different methods can be used to determine the carbon emissions per unit of stored electricity in response to different energy conversion processes under different working conditions of the energy storage node. In the electricity storage state, the carbon emissions per unit of stored electricity at the previous moment can be adjusted in a timely manner, so that the carbon emissions generated by the energy storage node during the increase of storage capacity can be more accurately measured.

[0082] In one embodiment, after determining the total carbon emissions of the power system at the current moment according to the first carbon emissions and the second carbon emissions, the method further includes:

[0083] The storage power of each energy storage node at the next moment is updated, so that when the working state of the energy storage node is the power storage state, the carbon emissions contained in the unit storage power of the energy storage node in the power storage state are determined according to the updated storage power.

[0084] As an example, the amount of stored electricity may be represented by a super capacitor state of charge (SOC).

[0085] In practical applications, after determining the total carbon emissions of the power system at the current moment, the storage capacity of each energy storage node at the next moment can be updated, for example, the state of charge of each energy storage node at the next moment can be updated. Specifically, when updating the state of charge of each energy storage node, the working state of each energy storage node at the next moment can be determined first, and the storage capacity of the energy storage node can be updated according to different working states. For example, if the working state of the energy storage node at the next moment is a discharge state, the storage capacity can be updated according to the following formula:

[0086] SOC(t+1)=SOC(t)-μ dis p storage

[0087] Among them, SOC(t) is the storage capacity at the current moment, SOC(t+1) is the storage capacity at the next moment, μ dis is the energy conversion efficiency of the energy storage node in the discharge state. In other words, for the energy storage node whose working state is the discharge state, the carbon emissions contained in the unit storage power can be kept unchanged, and only the storage power can be updated.

[0088] If the working state of the energy storage node at the next moment is the power storage state, the storage power of the energy storage node can be updated according to the following formula:

[0089] SOC(t+1)=SOC(t)+μ ch p storage

[0090] Among them, μ ch It is the energy conversion efficiency of the energy storage node in the power storage state. In other words, for the energy storage node whose working state is the power storage state, the carbon emissions contained in the unit storage power and the storage power can be updated at the same time.

[0091] After the storage power of each energy storage node is updated, step S101 can be returned to execute again, and when the working state of the energy storage node is the power storage state, the carbon emissions per unit storage power of the energy storage node in the power storage state at the next moment after the corresponding moment are determined based on the updated storage power at the corresponding moment and the carbon emissions per unit storage power at the corresponding moment.

[0092] Table 1

[0093]

[0094] For example, the carbon emissions and storage capacity per unit of storage capacity of an energy storage node at different times can be shown in Table 1. If the working state of the energy storage node at t1, t2 and t5 is the storage state, and the working state of the energy storage node at t3, t4 and t6 is the discharge state, then EF2 and SOC2 at t2 can be updated according to EF1 and SOC1 at t1, EF3 and EF4 at t3 and t4 are the same as EF2 and remain unchanged, while SOC3 and SOC4 are continuously updated, and then EF5 at t5 is updated according to EF4 (that is, EF2 at t2) and SOC4.

[0095] In this embodiment, the storage capacity of each energy storage node at the next moment can be updated, and then when the working state of the energy storage node is the power storage state, the carbon emissions per unit storage capacity of the energy storage node in the power storage state are determined according to the updated storage capacity, thereby providing a basis for the subsequent accurate determination of the carbon emissions per unit storage capacity under different working states.

[0096] In one embodiment, Figure 3 As shown, in S104, determining the second carbon emissions of each load node and the energy storage node in the power system whose working state is the power storage state at the current moment according to the first carbon emissions may include the following steps:

[0097] S301, obtaining a node power transfer matrix and a node load distribution matrix of a power system;

[0098] In practical applications, after obtaining the first carbon emissions, the node power transfer matrix and node load distribution matrix of the power system can also be obtained. The node power transfer matrix can characterize the direct power transfer between any two nodes in the power system, and the node load distribution matrix can characterize the relative situation between the power consumed by each node in the power system and the power consumed by the power system as a whole.

[0099] In a specific implementation, obtaining the node power transfer matrix of the power system may include the following steps:

[0100] The sum of active power of each node in the power system and the node exchange power between any two nodes are obtained; and a node power transfer matrix of the power system is generated according to the sum of active power and the node exchange power.

[0101] Among them, the node power transfer matrix T BB It can be an n-order square matrix, which can be shown as follows:

[0102] T BB =(t BBij ) n×n

[0103] Node power transfer matrix T BB The matrix element t in BBij As shown below:

[0104]

[0105] Among them, P ∑i is the sum of active power of each node in the power system; P ij The node exchange power between node i and node j, node i and node j can be any of the following nodes: a discharge node, a load node and an energy storage node.

[0106] In practical applications, P ∑i It can also be called the active flux of each node, that is, the sum of the active power injected into each node, including the active power injected by the generator and / or external associated network and the active power flowing into from other nodes in the network. ij is the power exchanged between nodes. If there is no branch connecting node i and node j, or the active power flowing from node i to node j through this branch is positive, then P ij = 0; if there is a branch connecting node i and node j, and the negative active power flow p flows from node i to node j through this branch, then P ij =p.

[0107] For the node load distribution matrix, obtaining the node load distribution matrix of the power system may include the following steps:

[0108] The node load of each node in the power system is obtained; and a node load distribution matrix of the power system is generated according to the sum of active power and the node load of each node.

[0109] Among them, the node load distribution matrix T BL It can be an n-order square matrix, as shown below:

[0110] T BL =(t BLij ) n×n

[0111] Node load distribution matrix T BL The matrix element t in BLij As shown below:

[0112]

[0113] Among them, P Li is the node load of node i in the power system.

[0114] S302, determining the second carbon emissions of each load node in the power system and the energy storage node whose working state is the power storage state at the current moment according to the node power transfer matrix, the node load distribution matrix, the first carbon emissions and the preset second mapping relationship.

[0115] In practical applications, after obtaining the node power transfer matrix, the node load distribution matrix, and the first carbon emissions of multiple nodes in the power generation state, the second carbon emissions of each load node in the power system and the energy storage node whose working state is the power storage state at the current moment can be determined according to the node power transfer matrix, the node load distribution matrix, the first carbon emissions, and the preset second mapping relationship. For example, the node power transfer matrix, the node load distribution matrix, and the first carbon emissions can be substituted into the second mapping relationship, and the second carbon emissions of each node in the power consumption state can be determined based on the second mapping relationship.

[0116] The second mapping relationship may be as follows:

[0117] e L =T BL (IT BB ) -1 e G

[0118] Among them, e L is the second carbon emission of each load node and the energy storage node whose working state is the power storage state at the current moment, I is the unit matrix, T BL is the node load distribution matrix, T BB is the node power transfer matrix, e G is the first carbon emission of each node in the discharging state at the current moment.

[0119] For example, e L It can be called the load node carbon emission vector, which includes the second carbon emission of each load node and the carbon emission vector of the energy storage node that is in the power storage state and can be regarded as a load node at the current moment, e G It can be called the carbon emission vector of the power generation node, which includes the first carbon emission of each discharge node and the carbon emission vector of the energy storage node that is in the discharge state and can be regarded as the discharge node at the current moment.L and e G It can be as follows:

[0120] e L =[e L1 e L2 … e Ln ] T

[0121] e G =[e G1 e G2 … e Gn ] T

[0122] In this embodiment, the node power transfer matrix and the node load distribution matrix of the power system can be obtained, and the second carbon emissions of each load node in the power system and the energy storage node whose working state is the power storage state at the current moment can be determined according to the node power transfer matrix, the node load distribution matrix, the first carbon emissions and the preset second mapping relationship. According to the power flow state of the power system at different times, a node load distribution matrix and a node power transfer matrix reflecting the load state and energy transfer situation of each node in the power system can be constructed, so that the carbon emissions of the power generation members, load members and energy storage members in the power system containing energy storage can be measured in real time on a rolling basis, effectively improving the accuracy of the assessment of the carbon emissions of the power system.

[0123] In order to enable those skilled in the art to better understand the above steps, the embodiment of the present application is illustrated below by using an example, but it should be understood that the embodiment of the present application is not limited to this.

[0124] like Figure 4 As shown, the initial parameters of the power system at time t0 can be pre-input, and then for the current time t, the power system flow state information at time t can be obtained, and the working states of the m energy storage nodes in the power system at time t can be determined one by one. For the working state of each energy storage node at time t, if the working state is a power storage state, it can be defined as a load node at time t, and if the working state is a discharge state, it can be defined as a discharge node at time t, and the carbon emission intensity of the energy storage node is determined according to the carbon emissions contained in the unit storage power of the energy storage node. Then, the first carbon emissions of each discharge node and the second carbon emissions of each load node at time t can be calculated, and the total carbon emissions of the power system at the current moment can be determined according to the first carbon emissions and the second carbon emissions.

[0125] Then, the state of charge of each energy storage node can be updated, and according to the working state of each energy storage node in the power system at time t+1, it is determined whether to update the carbon emissions per unit of stored electricity of the energy storage node. Specifically, if the working state of the energy storage node at time t+1 is the power storage state, the carbon emissions per unit of stored electricity at time t+1 can be updated according to the state of charge at time t and the carbon emissions per unit of stored electricity; if the working state of the energy storage node at time t+1 is the discharge state, the carbon emissions per unit of stored electricity at time t can be used as the carbon emissions per unit of stored electricity at time t+1.

[0126] Then, when the next moment comes, the t+1 moment is determined as the current moment t, and it is determined whether it is less than the preset calculation end moment T. If so, it is possible to return to the step of inputting the flow state information of the current moment t until the current moment is equal to T.

[0127] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0128] Based on the same inventive concept, the embodiment of the present application also provides a device for determining carbon emissions of a power system for implementing the above-mentioned method for determining carbon emissions of a power system. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more embodiments of the device for determining carbon emissions of a power system provided below can refer to the limitations of the method for determining carbon emissions of a power system above, and will not be repeated here.

[0129] In one embodiment, Figure 5 As shown, a device for determining carbon emissions of a power system is provided, comprising:

[0130] The load information acquisition module 501 is used to acquire the load information of each discharge node and energy storage node in the power system at the current moment;

[0131] The energy storage node carbon emission intensity determination module 502 is used to determine the energy storage node whose working state at the current moment in the power system is the discharging state, and use the carbon emission contained in the unit storage electricity of the energy storage node at the previous moment as the carbon emission contained in the unit storage electricity at the current moment, and determine the carbon emission intensity of the energy storage node according to the carbon emission contained in the unit storage electricity;

[0132] The first carbon emission acquisition module 503 is used to acquire the carbon emission intensity of the discharge node, and determine the first carbon emission of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0133] A second carbon emission acquisition module 504 is used to determine the second carbon emission of each load node and the energy storage node whose working state is the power storage state in the power system at the current moment according to the first carbon emission;

[0134] The total carbon emissions determination module 505 is used to determine the total carbon emissions of the power system at the current moment based on the first carbon emissions and the second carbon emissions, and return to execute the acquisition of load information of each discharge node and energy storage node in the power system at the current moment when the next moment comes, until the total carbon emissions at each preset moment are determined.

[0135] In one embodiment, if the energy storage node whose working state at the current moment is the discharging state was in the power storage state at the previous moment, the device further includes:

[0136] A historical carbon emission determination module is used to determine the storage capacity of the power storage node in the power storage state at the previous moment and the carbon emission per unit of storage capacity;

[0137] A carbon emission updating module, used to determine the carbon emission per unit stored electricity of the energy storage node at the current moment according to the stored electricity and the carbon emission per unit stored electricity of the energy storage node at the previous moment and a preset first mapping relationship, as the carbon emission per unit stored electricity of the energy storage node in the electricity storage state;

[0138] The first mapping relationship is as follows:

[0139]

[0140] Among them, EF(t-1) is the carbon emission per unit of stored electricity at the previous moment, EF(t) is the carbon emission per unit of stored electricity at the current moment, SOC(t-1) is the stored electricity at the previous moment, μ ch is the energy conversion efficiency during power storage, e storageis the second carbon emission of the energy storage node, p storage The amount of electricity obtained by the energy storage node from the power system.

[0141] In one embodiment, the apparatus further comprises:

[0142] The storage power update module is used to update the storage power of each energy storage node at the next moment, so that when the working state of the energy storage node is the power storage state, the carbon emissions contained in the unit storage power of the energy storage node in the power storage state are determined according to the updated storage power.

[0143] In one embodiment, the load information acquisition module 501 includes:

[0144] A power flow state information determination module, used to obtain the power flow state information of the power system at the current moment, and determine the node load of each discharge node and energy storage node in the power system according to the power flow state information;

[0145] The node load processing module is used to obtain the load information of each discharge node and energy storage node based on the node load of each discharge node and energy storage node.

[0146] In one embodiment, the second carbon emission acquisition module 504 is specifically used to:

[0147] A matrix acquisition submodule, used to acquire a node power transfer matrix and a node load distribution matrix of the power system;

[0148] A second carbon emission calculation submodule is used to determine the second carbon emission of each load node in the power system and the energy storage node whose working state is the power storage state at the current moment according to the node power transfer matrix, the node load distribution matrix, the first carbon emission and the preset second mapping relationship;

[0149] The second mapping relationship is:

[0150] e L =T BL (IT BB ) -1 e G

[0151] Among them, e L is the second carbon emission of each load node and the energy storage node whose working state is the power storage state at the current moment, T BL is the node load distribution matrix, T BB is the node power transfer matrix, e G is the first carbon emission of each node in the discharging state at the current moment.

[0152] In one embodiment, the matrix acquisition submodule is specifically used for:

[0153] Obtaining the sum of active power of each node in the power system and node exchange power between any two nodes;

[0154] Generate a node power transfer matrix of the power system according to the sum of the active power and the exchange power of each node;

[0155] The node power transfer matrix T BB The matrix element t in BBij As shown below:

[0156]

[0157] Among them, P ∑i is the sum of the active powers of each node in the power system; P ij The node exchange power between node i and node j;

[0158] as well as,

[0159] Obtaining node loads of various nodes in the power system;

[0160] Generate a node load distribution matrix of the power system according to the sum of the active power and the node load of each node;

[0161] The node load distribution matrix T BL The matrix element t in BLij As shown below:

[0162]

[0163] Among them, P Li is the node load of node i in the power system.

[0164] Each module in the above-mentioned device for determining carbon emissions of a power system can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each of the above modules.

[0165] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 6As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the stored electricity of each node in the power system and the carbon emissions contained in the unit stored electricity. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for determining the carbon emissions of the power system is implemented.

[0166] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 7 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for determining carbon emissions of a power system is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse.

[0167] Those skilled in the art will understand that Figure 6 or Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0168] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0169] Obtain the load information of each discharge node and energy storage node in the power system at the current moment;

[0170] Determine an energy storage node in the power system whose working state at the current moment is a discharging state, use the carbon emissions per unit of stored electricity of the energy storage node at the previous moment as the carbon emissions per unit of stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions per unit of stored electricity;

[0171] Acquire the carbon emission intensity of the discharge node, and determine the first carbon emission amount of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0172] Determine, based on the first carbon emission, a second carbon emission at the current moment of each load node and an energy storage node in the power system whose working state is a power storage state;

[0173] The total carbon emissions of the power system at the current moment are determined based on the first carbon emissions and the second carbon emissions, and when the next moment comes, the process returns to execute the process of obtaining the load information of each discharge node and energy storage node in the power system at the current moment until the total carbon emissions at each preset moment are determined.

[0174] In one embodiment, when the processor executes the computer program, the steps in the other embodiments described above are also implemented.

[0175] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0176] Obtain the load information of each discharge node and energy storage node in the power system at the current moment;

[0177] Determine an energy storage node in the power system whose working state at the current moment is a discharging state, use the carbon emissions per unit of stored electricity of the energy storage node at the previous moment as the carbon emissions per unit of stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions per unit of stored electricity;

[0178] Acquire the carbon emission intensity of the discharge node, and determine the first carbon emission amount of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0179] Determine, based on the first carbon emission, a second carbon emission at the current moment of each load node and an energy storage node in the power system whose working state is a power storage state;

[0180] The total carbon emissions of the power system at the current moment are determined based on the first carbon emissions and the second carbon emissions, and when the next moment comes, the process returns to execute the process of obtaining the load information of each discharge node and energy storage node in the power system at the current moment until the total carbon emissions at each preset moment are determined.

[0181] In one embodiment, when the computer program is executed by a processor, the steps in the other embodiments described above are also implemented.

[0182] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0183] Obtain the load information of each discharge node and energy storage node in the power system at the current moment;

[0184] Determine an energy storage node in the power system whose working state at the current moment is a discharging state, use the carbon emissions per unit of stored electricity of the energy storage node at the previous moment as the carbon emissions per unit of stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions per unit of stored electricity;

[0185] Acquire the carbon emission intensity of the discharge node, and determine the first carbon emission amount of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information;

[0186] Determine, based on the first carbon emission, a second carbon emission at the current moment of each load node and an energy storage node in the power system whose working state is a power storage state;

[0187] The total carbon emissions of the power system at the current moment are determined based on the first carbon emissions and the second carbon emissions, and when the next moment comes, the process returns to execute the process of obtaining the load information of each discharge node and energy storage node in the power system at the current moment until the total carbon emissions at each preset moment are determined.

[0188] In one embodiment, when the computer program is executed by a processor, the steps in the other embodiments described above are also implemented.

[0189] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[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 the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0191] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0192] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for determining carbon emissions of a power system, characterized in that: The method comprises: Obtain the load information of each discharge node and energy storage node in the power system at the current moment; Determine an energy storage node in the power system whose working state at the current moment is a discharging state, use the carbon emissions per unit of stored electricity of the energy storage node at the previous moment as the carbon emissions per unit of stored electricity at the current moment, and determine the carbon emission intensity of the energy storage node based on the carbon emissions per unit of stored electricity; Acquire the carbon emission intensity of the discharge node, and determine the first carbon emission amount of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information; Obtaining the sum of active power of each node in the power system and the node exchange power between any two nodes, and generating a node power transfer matrix of the power system according to the sum of active power and the node exchange power of each node; obtaining the node load of each node in the power system; and generating a node load distribution matrix of the power system according to the sum of active power and the node load of each node; Determine the second carbon emissions of each load node and the energy storage node whose working state is the power storage state in the power system at the current moment according to the node power transfer matrix, the node load distribution matrix, the first carbon emissions and the preset second mapping relationship; Determine the total carbon emissions of the power system at the current moment according to the first carbon emissions and the second carbon emissions, and return to execute the step of obtaining the load information of each discharge node and energy storage node in the power system at the current moment when the next moment comes, until the total carbon emissions at each preset moment are determined; The node power transfer matrix T BB The matrix element t in BBij As shown below: Among them, P ∑i is the sum of the active powers of each node in the power system; P ij The node exchange power between node i and node j; The node load distribution matrix T BL The matrix element t in BLij As shown below: Among them, P Li is the node load of node i in the power system; The second mapping relationship is: e L =T BL (I-T BB ) -1 e G Among them, e L is the second carbon emission of each load node and the energy storage node whose working state is the power storage state at the current moment, T BL is the node load distribution matrix, T BB is the node power transfer matrix, e G is the first carbon emission of each node in the discharging state at the current moment; If the energy storage node whose working state at the current moment is the discharging state was in the power storage state at the previous moment, the carbon emissions contained in the unit storage power of the energy storage node in the power storage state are determined by the following steps: Determine the storage capacity of the power storage node in the power storage state at the previous moment and the carbon emissions per unit of storage capacity; According to the stored electricity and the carbon emissions per unit stored electricity of the energy storage node at the previous moment and a preset first mapping relationship, determine the carbon emissions per unit stored electricity of the energy storage node at the current moment as the carbon emissions per unit stored electricity of the energy storage node in the electricity storage state; The first mapping relationship is as follows: Among them, EF(t-1) is the carbon emission per unit of stored electricity at the previous moment, EF(t) is the carbon emission per unit of stored electricity at the current moment, SOC(t-1) is the stored electricity at the previous moment, μ ch is the energy conversion efficiency during power storage, e storage is the second carbon emission of the energy storage node, p storage The amount of electricity obtained by the energy storage node from the power system.

2. The method according to claim 1, characterized in that After determining the total carbon emissions of the power system at the current moment according to the first carbon emissions and the second carbon emissions, the method further includes: The storage power of each energy storage node at the next moment is updated, so that when the working state of the energy storage node is the power storage state, the carbon emissions contained in the unit storage power of the energy storage node in the power storage state are determined according to the updated storage power.

3. The method according to claim 1 or 2, characterized in that: The obtaining of load information of each discharge node and energy storage node in the power system at the current moment includes: Acquire power flow state information of the power system at the current moment, and determine the node load of each discharge node and energy storage node in the power system according to the power flow state information; The load information of each discharge node and energy storage node is obtained based on the node load of each discharge node and energy storage node.

4. A device for determining carbon emissions of a power system, characterized in that: The device comprises: The load information acquisition module is used to obtain the load information of each discharge node and energy storage node in the power system at the current moment; The energy storage node carbon emission intensity determination module is used to determine the energy storage node whose working state at the current moment in the power system is the discharging state, use the carbon emissions contained in the unit storage electricity of the energy storage node at the previous moment as the carbon emissions contained in the unit storage electricity at the current moment, and determine the carbon emission intensity of the energy storage node according to the carbon emissions contained in the unit storage electricity; A first carbon emission acquisition module is used to acquire the carbon emission intensity of the discharge node, and determine the first carbon emission of each node in the power system in the discharge state at the current moment according to the carbon emission intensity of the energy storage node and the discharge node in the discharge state and the load information; The second carbon emission acquisition module is used to obtain the sum of the active power of each node in the power system and the node exchange power between any two nodes, and generate a node power transfer matrix of the power system according to the sum of the active power and the node exchange power of each node; obtain the node load of each node in the power system; generate a node load distribution matrix of the power system according to the sum of the active power and the node load of each node; determine the second carbon emissions of each load node in the power system and the energy storage node whose working state is the power storage state at the current moment according to the node power transfer matrix, the node load distribution matrix, the first carbon emissions and the preset second mapping relationship; A total carbon emission determination module, used to determine the total carbon emission of the power system at the current moment according to the first carbon emission and the second carbon emission, and return to execute the acquisition of load information of each discharge node and energy storage node in the power system at the current moment when the next moment comes, until the total carbon emission at each preset moment is determined; The node power transfer matrix T BB The matrix element t in BBij As shown below: Among them, P ∑i is the sum of the active powers of each node in the power system; P ij The node exchange power between node i and node j; The node load distribution matrix T BL The matrix element t in BLij As shown below: Among them, P Li is the node load of node i in the power system; The second mapping relationship is: e L =T BL (I-T BB ) -1 e G Among them, e L is the second carbon emission of each load node and the energy storage node whose working state is the power storage state at the current moment, T BL is the node load distribution matrix, T BB is the node power transfer matrix, e G is the first carbon emission of each node in the discharging state at the current moment; If the energy storage node whose working state at the current moment is the discharging state was in the power storage state at the previous moment, the device further includes: A historical carbon emission determination module is used to determine the storage capacity of the power storage node in the power storage state at the previous moment and the carbon emission per unit of storage capacity; A carbon emission updating module, used to determine the carbon emission per unit stored electricity of the energy storage node at the current moment according to the stored electricity and the carbon emission per unit stored electricity of the energy storage node at the previous moment and a preset first mapping relationship, as the carbon emission per unit stored electricity of the energy storage node in the electricity storage state; The first mapping relationship is as follows: Among them, EF(t-1) is the carbon emission per unit of stored electricity at the previous moment, EF(t) is the carbon emission per unit of stored electricity at the current moment, SOC(t-1) is the stored electricity at the previous moment, μ ch is the energy conversion efficiency during power storage, e storage is the second carbon emission of the energy storage node, p storage The amount of electricity obtained by the energy storage node from the power system.

5. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 3 are implemented.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

7. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 3 are implemented.

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