Carbon flow cost distribution method and device, terminal equipment and computer program product

Abstract

The invention is suitable for the technical field of electric power engineering, and provides a carbon flow cost distribution method and device, terminal equipment and a computer program product. Establishing a sub-power expression of each branch loss driven by the equivalent voltage source of each node and a sub-power expression of each load absorption; according to the partial power expression of each branch loss, establishing an expression for calculating the carbon flow cost allocated to the power grid operator; according to the sub-power expression of each load absorption, establishing an expression for calculating the carbon flow cost allocated to each load; and based on the expression used for calculating the carbon flow cost allocated to the power grid operator and the expression used for calculating the carbon flow cost allocated to each load, obtaining the carbon flow cost allocated to the power grid operator and the carbon flow cost allocated to each load, and outputting the carbon flow cost allocated to the power grid operator and the carbon flow cost allocated to each load. According to the embodiment of the invention, the reasonability of carbon flow cost distribution in an alternating current power grid can be effectively improved.

Description

Technical Field

[0001] The present application belongs to the field of electric power engineering technology, and in particular, relates to a carbon flow cost allocation method, apparatus, terminal equipment and computer program product. Background Art

[0002] In the AC power grid, the rationality of carbon flow cost allocation not only directly affects the effectiveness of the power market on resource allocation and environmental protection, but also directly affects the economy and safety of power system operation. The carbon flow cost per unit of electricity from different power sources is different. Therefore, the carbon flow cost should be allocated based on the power loss from each power source in each branch of the power grid and the power absorption from each power source by each load.

[0003] At present, when allocating carbon flow costs based on the partial power from each power source lost in each branch of the power grid and the partial power from each power source absorbed by each load, it is usually achieved by tracking the flow based on the artificial assumption of "node power proportional sharing (also known as equal proportional distribution)". However, this method has certain limitations. For example, this method requires that each branch of the power grid has no power loss, which makes it difficult to take into account the impact of network loss power and the impact of electromagnetic exchange power between capacitive and inductive elements in the power grid, which undermines the rationality of carbon flow cost allocation. Therefore, it is urgent to develop a new method to overcome the limitations of existing methods. Summary of the invention

[0004] In view of this, the embodiments of the present application provide a carbon flow cost allocation method, apparatus, terminal device and computer program product to solve the problem of low rationality of carbon flow cost allocation in existing carbon flow cost allocation methods.

[0005] A first aspect of an embodiment of the present application provides a carbon flow cost allocation method, which is applied to an AC power grid. The method includes:

[0006] Based on the acquired parameters and power flow solution of the AC power grid, establish the partial voltage expression of each node driven by the equivalent voltage source of the power supply of each node in the AC power grid and the total voltage expression of each node;

[0007] According to the partial voltage expressions of the nodes and the total voltage expressions of the nodes, establish the partial power expressions of the losses of the branches driven by the equivalent voltage sources of the power sources of the nodes and the partial power expressions absorbed by the loads;

[0008] According to the power distribution expressions of each branch loss, an expression for calculating the carbon flow cost allocated to the grid operator is established;

[0009] According to the partial power expressions absorbed by each load, an expression for calculating the carbon flow cost allocated to each load is established;

[0010] Based on the expression for calculating the carbon flow cost allocated to the grid operator and the expression for calculating the carbon flow cost allocated to each load, the carbon flow cost allocated to the grid operator and the carbon flow cost allocated to each load are obtained and output.

[0011] In one embodiment, the method further comprises:

[0012] Based on the acquired parameters and power flow solution of the AC power grid, an expression for calculating the carbon flow cost allocated to each power source is established;

[0013] According to the expression for calculating the carbon flow cost allocated to each power source, the carbon flow cost allocated to each power source is obtained and output.

[0014] In one embodiment, the expression for calculating the carbon flow cost allocated to each power source is:

[0015] C Gk =(1-β)C k ,k=1,2,…,n;

[0016] Among them, C Gk represents the carbon flow cost allocated to the power source of node k, 1-β represents the carbon flow cost ratio coefficient shared by the power production link, C k represents the total carbon flow cost of the power supply of node k, and n represents the total number of nodes in the AC power grid.

[0017] In one embodiment, the voltage division expressions of each node are:

[0018]

[0019] Among them, V i,k represents the voltage at node i driven by the equivalent voltage source of the power supply at node k, E k The voltage output by the equivalent voltage source of the power supply at node k, Z ih The elements corresponding to the rows of node i and the columns of node h in the inverse matrix Z of the node admittance matrix Y of the AC power grid with integrated loads under the condition that all power nodes are short-circuited to ground, Y hk represents the element of the row corresponding to node h and the column corresponding to node k in the node admittance matrix Y of the power grid with integrated load under the condition that all power nodes are short-circuited to ground, Ω represents the set of all nodes connected to power sources in the AC power grid, represents the set of remaining nodes of the power grid after deducting the nodes connected to the power supply, and n represents the total number of nodes in the AC power grid;

[0020] The total voltage expression of each node is:

[0021]

[0022] Among them, V i represents the total voltage at node i, V i,k represents the partial voltage at node i driven by the equivalent voltage source of the power supply at node k.

[0023] In one embodiment, the power distribution expression of each branch loss is:

[0024] L ij,k =Re[(V i -V j )(y ij (V i,k -V j,k )) * ],i,j,k=1,2,…,n;

[0025] Among them, L ij,k represents the partial power loss of branch ij driven by the equivalent voltage source of the power supply at node k, Re represents the operator for taking the real part of a complex number, * represents the operator for taking the complex conjugate value, V i represents the total voltage at node i, V j represents the total voltage at node j, V i,k represents the voltage at node i driven by the equivalent voltage source of the power supply at node k, V j,k represents the partial voltage of node j driven by the equivalent voltage source of node k, y ij represents the admittance of branch ij, n represents the total number of nodes in the AC power grid;

[0026] The partial power expression absorbed by each load is:

[0027] D i0,k =Re[V i (y i0 V i,k ) * ],i,k=1,2,…,n;

[0028] Among them, D i0,k represents the partial power absorbed by the load at node i driven by the equivalent voltage source of the power supply at node k, Re represents the operator for taking the real part of a complex number, * represents the operator for taking the complex conjugate value, V i represents the total voltage at node i, V i,k represents the partial voltage of node i driven by the equivalent voltage source of the power supply of node k, y i0 represents the equivalent admittance of the load at node i, and n represents the total number of nodes in the AC power grid.

[0029] In one embodiment, the expression for calculating the carbon flow cost allocated to the grid operator is established based on the power distribution expression of each branch loss, including:

[0030] According to the power distribution expression of each branch loss, the carbon flow cost ratio coefficient shared by the power dissipation link, the total carbon flow cost of the power supply of each node, and the total output power of the power supply of each node, an expression for allocating the carbon flow cost of each power supply to each branch is established;

[0031] According to the expression for allocating the carbon flow cost of each power source to each branch, establishing the expression for calculating the carbon flow cost allocated to the grid operator;

[0032] The expression for allocating the carbon flow cost of each power source to each branch is:

[0033]

[0034] Among them, C ij,k represents the value of allocating the carbon flow cost of the power source of node k to branch ij, β represents the carbon flow cost ratio coefficient shared by the energy dissipation link, C k represents the total carbon flow cost of the power supply at node k, P k represents the total output power of the power supply at node k;

[0035] The expression for calculating the carbon flow cost allocated to the grid operator is:

[0036]

[0037] Among them, C N represents the carbon flow cost assigned to the grid operator, C ij,k It represents the value of allocating the carbon flow cost of the power source of node k to branch ij.

[0038] In one embodiment, the expression for calculating the carbon flow cost allocated to each load is established according to the expression of the power distribution absorbed by each load, including:

[0039] According to the power distribution expression absorbed by each load, the carbon flow cost ratio coefficient shared by the power dissipation link, the total carbon flow cost of the power supply of each node, and the total output power of the power supply of each node, an expression for allocating the carbon flow cost of each power supply to each load is established;

[0040] According to the expression for allocating the carbon flow cost of each power source to each load, establishing the expression for calculating the carbon flow cost allocated to each load;

[0041] The expression for allocating the carbon flow cost of each power source to each load is:

[0042]

[0043] Among them, C i0,k represents the value of allocating the carbon flow cost of the power supply at node k to the load at node i, β represents the carbon flow cost ratio coefficient shared by the energy dissipation link, C k represents the total carbon flow cost of the power supply at node k, D i0,k represents the partial power absorbed by the load at node i driven by the equivalent voltage source at node k, P k represents the total output power of the power supply at node k;

[0044] The expression for calculating the carbon flow cost assigned to each load is:

[0045]

[0046] Among them, C Di represents the carbon flow cost of the load allocated to node i, C i0,k The value representing the carbon flow cost of the power source at node k allocated to the load at node i.

[0047] A second aspect of an embodiment of the present application provides a carbon flow cost allocation device, which is applied to an AC power grid, and the device includes:

[0048] A first building module is used to establish, based on the acquired parameters and power flow solution of the AC power grid, the partial voltage expressions of each node driven by the equivalent voltage source of the power supply of each node in the AC power grid and the total voltage expression of each node;

[0049] The second building module is used to establish the partial power expression of each branch loss driven by the equivalent voltage source of the power supply of each node and the partial power expression absorbed by each load according to the partial voltage expression of each node and the total voltage expression of each node;

[0050] A third building module is used to establish an expression for calculating the carbon flow cost allocated to the grid operator according to the power distribution expression of each branch loss;

[0051] A fourth building module, for establishing an expression for calculating the carbon flow cost allocated to each load according to the expression of the power distribution absorbed by each load;

[0052] The result output module is used to obtain and output the carbon flow cost allocated to the grid operator and the carbon flow cost allocated to each load based on the expression for calculating the carbon flow cost allocated to the grid operator and the expression for calculating the carbon flow cost allocated to each load.

[0053] A third aspect of an embodiment of the present application provides a terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the carbon flow cost allocation method as described in the first aspect of the embodiment of the present application are implemented.

[0054] A fourth aspect of the embodiments of the present application provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the carbon flow cost allocation method described in the first aspect of the embodiments of the present application are implemented.

[0055] A fifth aspect of the embodiments of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the carbon flow cost allocation method as described in the first aspect of the embodiments of the present application are implemented.

[0056] The carbon flow cost allocation method provided in the first aspect of the embodiment of the present application is applied to an AC power grid. Based on the acquired parameters and flow solutions of the AC power grid, a partial voltage expression of each node in the AC power grid driven by an equivalent voltage source of the power supply of each node and a total voltage expression of each node are established; based on the partial voltage expression of each node and the total voltage expression of each node, a partial power expression of each branch loss driven by the equivalent voltage source of the power supply of each node and a partial power expression absorbed by each load are established; based on the partial power expression of each branch loss, a method for calculating the carbon flow cost allocated to the grid operator is established. The carbon flow cost allocated to the grid operator and the carbon flow cost allocated to each load are obtained and output based on the expression for calculating the carbon flow cost allocated to the grid operator and the expression for calculating the carbon flow cost allocated to each load. This can effectively solve the problems of the existing carbon flow cost allocation method that it is difficult to take into account the influence of network loss power and the influence of electro-magnetic exchange power between capacitive and inductive elements in the power grid, and improve the rationality of carbon flow cost allocation in the AC power grid.

[0057] It can be understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0059] Figure 1 This is a first flow chart of the carbon flow cost allocation method provided in the embodiment of the present application;

[0060] Figure 2 is a schematic diagram of the structure of an AC power grid provided in an embodiment of the present application;

[0061] Figure 3 This is a second flow chart of the carbon flow cost allocation method provided in the embodiment of the present application;

[0062] Figure 4 This is a third flow chart of the carbon flow cost allocation method provided in the embodiment of the present application;

[0063] Figure 5 This is a fourth flow chart of the carbon flow cost allocation method provided in the embodiment of the present application;

[0064] Figure 6 It is a structural schematic diagram of a carbon flow cost allocation device provided in an embodiment of the present application;

[0065] Figure 7 It is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0067] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0068] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0069] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. "Multiple" means "two" or "more than two".

[0070] In the AC power grid, the rationality of carbon flow cost allocation not only directly affects the effectiveness of the power market on resource allocation and environmental protection, but also directly affects the economy and safety of power system operation. The carbon flow cost per unit of electricity from different power sources is different, so the carbon flow cost should be allocated based on the power loss from each power source in each branch of the power grid and the power absorption from each power source by each load.

[0071] At present, when allocating carbon flow costs based on the partial power from each power source lost in each branch of the power grid and the partial power from each power source absorbed by each load, it is usually achieved by tracking the flow based on the artificial assumption of "node power proportional sharing (also known as equal proportional distribution)". However, this method has certain limitations. For example, this method requires that each branch of the power grid has no power loss, which makes it difficult to take into account the impact of network loss power and the impact of electromagnetic exchange power between capacitive and inductive elements in the power grid, which undermines the rationality of carbon flow cost allocation. Therefore, it is urgent to develop a new method to overcome the limitations of existing methods.

[0072] The embodiment of the present application provides a carbon flow cost allocation method, which is applied to an AC power grid. Based on the acquired parameters and power flow solution of the AC power grid, a partial voltage expression of each node in the AC power grid driven by an equivalent voltage source of the power supply of each node and a total voltage expression of each node are established; based on the partial voltage expression of each node and the total voltage expression of each node, a partial power expression of each branch loss driven by the equivalent voltage source of the power supply of each node and a partial power expression absorbed by each load are established; based on the partial power expression of each branch loss, a carbon flow cost allocated to the power grid operator is established. Expression; according to the expression of the power distribution absorbed by each load, an expression for calculating the carbon flow cost allocated to each load is established; based on the expression for calculating the carbon flow cost allocated to the power grid operator and the expression for calculating the carbon flow cost allocated to each load, the carbon flow cost allocated to the power grid operator and the carbon flow cost allocated to each load are obtained and output, which can effectively solve the problems existing in the existing carbon flow cost allocation method that it is difficult to take into account the influence of network loss power and the influence of electro-magnetic exchange power between capacitive and inductive elements in the power grid, and improve the rationality of carbon flow cost allocation in the AC power grid.

[0073] Embodiment 1

[0074] like Figure 1 As shown, the carbon flow cost allocation method provided in the embodiment of the present application is applied to an AC power grid, and includes the following steps S1 to S5:

[0075] Step S1, based on the acquired parameters and power flow solution of the AC power grid, establish the partial voltage expression of each node in the AC power grid driven by the equivalent voltage source of the power supply of each node and the total voltage expression of each node, and then enter step S2.

[0076] In application, the structure of AC power grid is as follows Figure 2 As shown, the meaning of each parameter is shown in the relevant content below. The parameters and power flow solutions of the AC power grid obtained include but are not limited to the total number of nodes, the voltage of each node, the set of all nodes connected to the power grid, the set of nodes remaining in the power grid after deducting the nodes connected to the power grid, the carbon flow cost ratio coefficient shared by the power dissipation link, and the total carbon flow cost of the node power supply.

[0077] In the application, when obtaining the parameters and power flow solution of the AC power grid, you can also first obtain the number of each node, the starting node, the end node, the branch type, the node parameters (including but not limited to the rated power of the node power supply, the maximum / minimum active power, the maximum / minimum reactive power, the voltage range, the active load, the reactive load, etc.), the branch parameters (including but not limited to the resistance, reactance, and susceptance of the transmission line, etc.), the initial node voltage, the initial branch current and other parameters;

[0078] Then, the voltage of each node, the power of each branch, the current of each branch and other parameters are solved through the Newton-Raphson Method, Fast Decoupled Load Flow (FDLF), Gauss-Seidel Method and other power flow solving methods. Finally, the solved data can be used to establish the partial voltage expression of each node in the AC power grid driven by the equivalent voltage source of the power supply of each node and the total voltage expression of each node.

[0079] In the application, when establishing the partial voltage expression of each node driven by the equivalent voltage source of the power supply of each node in the AC power grid and the total voltage expression of each node, it includes:

[0080] According to the known parameters and power flow solution of the AC power grid, the quotient of the conjugate complex number of the load absorption power of each node and the square of the voltage amplitude of the node corresponding to the power flow solution is calculated and used as the equivalent admittance of each load;

[0081] According to the definition of self-admittance (diagonal elements in the node admittance matrix, representing the sum of the admittances of all branches connected to a node) and mutual admittance (non-diagonal elements in the node admittance matrix, representing the negative value of the branch admittance between two nodes), the node admittance matrix Y of the power grid with fused loads under the condition that all power nodes are short-circuited to the ground is established, and the inverse matrix Z of Y is calculated by the method of linear algebra;

[0082] According to the node admittance matrix Y and its inverse matrix Z of the power grid with integrated loads under the condition that all power nodes are short-circuited to the ground, based on the voltage output by the equivalent voltage source of the power supply of each node, according to Kirchhoff's Current Law (KCL) (i.e., at any time, the sum of the currents flowing into a node is equal to the sum of the currents flowing out of the node), the partial voltage expressions of each node driven by the equivalent voltage source of the power supply of each node are established;

[0083] Based on the partial voltage expressions of each node driven by the equivalent voltage sources of the power supplies of each node, the total voltage expressions of each node driven by the equivalent voltage sources of the power supplies of each node are established according to the superposition theorem (that is, in a linear circuit, if there are multiple independent sources (voltage sources and current sources), then the voltage or current of any branch can be regarded as the algebraic sum of the voltages or currents generated on the same branch when each independent source acts alone).

[0084] In one embodiment, the voltage division expressions of each node are:

[0085]

[0086] Among them, V i,k represents the voltage at node i driven by the equivalent voltage source of the power supply at node k, E k The voltage output by the equivalent voltage source representing the power supply at node k is equal to the voltage at node k in the known power flow solution, and when there is no power supply at node k, E k is equal to zero, Z ih The elements corresponding to the rows of node i and the columns of node h in the inverse matrix Z of the node admittance matrix Y of the AC power grid with integrated loads under the condition that all power nodes are short-circuited to ground, Y hk represents the element of the row corresponding to node h and the column corresponding to node k in the node admittance matrix Y of the power grid with integrated load under the condition that all power nodes are short-circuited to ground, Ω represents the set of all nodes connected to power sources in the AC power grid, represents the set of remaining nodes of the power grid after deducting the nodes connected to the power supply, and n represents the total number of nodes in the AC power grid;

[0087] The total voltage expression of each node is:

[0088]

[0089] Among them, V i represents the total voltage at node i, V i,k represents the partial voltage at node i driven by the equivalent voltage source of the power supply at node k.

[0090] Step S2, based on the partial voltage expressions of each node and the total voltage expressions of each node, establish the partial power expressions of each branch loss driven by the equivalent voltage source of the power supply of each node and the partial power expression absorbed by each load, and enter step S3.

[0091] In the application, based on the partial voltage expressions of each node driven by the equivalent voltage sources of the power supplies of each node, the total voltage expression of each node driven by the equivalent voltage sources of the power supplies of all nodes and the parameters of the AC power grid obtained in step S1, the partial power expressions of each branch loss driven by the equivalent voltage sources of the power supplies of each node can be established.

[0092] In one embodiment, the power distribution expression of each branch loss is:

[0093] L ij,k =Re[(V i -V j )(y ij (V i,k -V j,k )) *],i,j,k=1,2,…,n;

[0094] Among them, L ij,k represents the partial power loss of branch ij driven by the equivalent voltage source of the power supply at node k, Re represents the operator for taking the real part of a complex number, * represents the operator for taking the complex conjugate value, V i represents the total voltage at node i, V j represents the total voltage at node j, V i,k represents the voltage at node i driven by the equivalent voltage source of the power supply at node k, V j,k represents the partial voltage of node j driven by the equivalent voltage source of node k, y ij represents the admittance of branch ij, and n represents the total number of nodes in the AC power grid.

[0095] In the application, based on the partial voltage expressions of each node driven by the equivalent voltage sources of the power supplies of each node, the total voltage expression of each node driven by the equivalent voltage sources of the power supplies of all nodes obtained in step S1, and the parameters and flow solutions of the AC power grid, the partial power expressions absorbed by each load driven by the equivalent voltage sources of the power supplies of each node can also be established.

[0096] In one embodiment, the partial power absorbed by each load is expressed as:

[0097] D i0,k =Re[V i (y i0 V i,k ) * ],i,k=1,2,…,n;

[0098] Among them, D i0,k represents the partial power absorbed by the load at node i driven by the equivalent voltage source of the power supply at node k, Re represents the operator for taking the real part of a complex number, * represents the operator for taking the complex conjugate value, V i represents the total voltage at node i, V i,k represents the partial voltage of node i driven by the equivalent voltage source of the power supply of node k, y i0 It represents the equivalent admittance of the load at node i, which is equal to the quotient of the conjugate complex number of the load absorption power at node i and the square of the voltage amplitude at node i corresponding to the power flow solution, where the load absorption power at node i is a known parameter of the AC power grid, and when node i is unloaded, y i0 is zero, and n represents the total number of nodes in the AC power grid.

[0099] Step S3: According to the power distribution expressions of the branch losses, an expression for calculating the carbon flow cost allocated to the grid operator is established, and the process proceeds to step S4.

[0100] In the application, based on the power distribution expression of each branch loss driven by the equivalent voltage source of the power supply of each node obtained in step S2, an expression for calculating the carbon flow cost assigned to the grid operator can be established. Based on the expression for calculating the carbon flow cost assigned to the grid operator, the carbon flow cost assigned to the grid operator can be calculated, so that the grid operator can optimize the operating strategy according to the allocated carbon flow cost, control and reduce the overall operating cost.

[0101] In one embodiment, Figure 3 As shown, step S3 specifically includes the following steps S31 to S32:

[0102] Step S31: Establish an expression for allocating the carbon flow cost of each power source to each branch according to the power distribution expression of each branch loss, the carbon flow cost ratio coefficient shared by the power dissipation link, the total carbon flow cost of the power source of each node, and the total output power of the power source of each node;

[0103] Step S32: According to the expression for allocating the carbon flow cost of each power source to each branch, establish the expression for calculating the carbon flow cost allocated to the grid operator.

[0104] In the application, when establishing an expression for calculating the carbon flow cost allocated to the power grid operator, it is necessary to first establish an expression for allocating the carbon flow cost of each power source to each branch based on the power distribution expression of each branch loss driven by the equivalent voltage source of the power supply of each node, the carbon flow cost proportion coefficient shared by the energy dissipation link, the total carbon flow cost of the power supply of each node, and the total output power of the power supply of each node; then, based on the expression for allocating the carbon flow cost of each power source to each branch, establish an expression for calculating the carbon flow cost allocated to the power grid operator.

[0105] In one embodiment, the expression for allocating the carbon flow cost of each power source to each branch is:

[0106]

[0107] Among them, C ij,k represents the value of allocating the carbon flow cost of the power source of node k to branch ij, β represents the carbon flow cost ratio coefficient shared by the energy dissipation link, C k represents the total carbon flow cost of the power supply at node k, β and C k These are the parameters of the AC power grid, P k represents the total output power of the power source at node k, is the power flow solution of the AC power grid, L ij,k represents the partial power loss of branch ij driven by the equivalent voltage source of the power supply of node k;

[0108] The expression for calculating the carbon flow cost allocated to the grid operator is:

[0109]

[0110] Among them, C N represents the carbon flow cost assigned to the grid operator, C ij,k It represents the value of allocating the carbon flow cost of the power source of node k to branch ij.

[0111] Step S4: According to the expression of the power distribution absorbed by each load, establish an expression for calculating the carbon flow cost allocated to each load, and proceed to step S5.

[0112] In the application, based on the expression of the power distribution absorbed by each load driven by the equivalent voltage source of the power supply of each node obtained in step S2, an expression for calculating the carbon flow cost assigned to each load can be established. Based on the expression for calculating the carbon flow cost assigned to each load, the carbon flow cost assigned to each load can be calculated, so that the user can optimize the electricity consumption behavior and control and reduce the electricity cost according to the allocated carbon flow cost.

[0113] In one embodiment, Figure 4 As shown, step S4 specifically includes the following steps S41 to S42:

[0114] Step S41: Establish an expression for allocating the carbon flow cost of each power source to each load according to the power distribution expression absorbed by each load, the carbon flow cost ratio coefficient shared by the power dissipation link, the total carbon flow cost of the power source of each node, and the total output power of the power source of each node;

[0115] Step S42: according to the expression for allocating the carbon flow cost of each power source to each load, establish the expression for calculating the carbon flow cost allocated to each load.

[0116] In the application, when establishing an expression for calculating the carbon flow cost assigned to each load, it is necessary to first establish an expression for allocating the carbon flow cost of each power source to each load based on the power distribution expression absorbed by each load driven by the equivalent voltage source of the power source of each node, the carbon flow cost proportion coefficient shared by the electric energy dissipation link, the total carbon flow cost of the power source of each node, and the total output power of the power source of each node; then, based on the expression for allocating the carbon flow cost of each power source to each load, establish an expression for calculating the carbon flow cost assigned to each load.

[0117] In one embodiment, the expression for allocating the carbon flow cost of each power source to each load is:

[0118]

[0119] Among them, C i0,k represents the value of allocating the carbon flow cost of the power supply at node k to the load at node i, β represents the carbon flow cost ratio coefficient shared by the energy dissipation link, C k represents the total carbon flow cost of the power supply at node k, β and C k These are the parameters of the AC power grid, D i0,l represents the partial power absorbed by the load at node i driven by the equivalent voltage source at node k, P k represents the total output power of the power source at node k, and is the power flow solution of the AC power grid obtained;

[0120] The expression for calculating the carbon flow cost assigned to each load is:

[0121]

[0122] Among them, C Di represents the carbon flow cost of the load allocated to node i, C i0,k The value representing the carbon flow cost of the power source at node k allocated to the load at node i.

[0123] Step S5: Based on the expression for calculating the carbon flow cost allocated to the grid operator and the expression for calculating the carbon flow cost allocated to each load, obtain the carbon flow cost allocated to the grid operator and the carbon flow cost allocated to each load and output them.

[0124] In the application, the carbon flow cost assigned to the grid operator can be calculated according to the expression used to calculate the carbon flow cost assigned to the grid operator, and the carbon flow cost assigned to each load can be calculated according to the expression used to calculate the carbon flow cost assigned to each load. According to demand, the carbon flow cost assigned to the grid operator and the carbon flow cost assigned to each load can be output to the user end for easy viewing and analysis.

[0125] In the application, the user end can be a mobile phone, tablet computer, wearable device, augmented reality (AR) / virtual reality (VR) device, laptop computer, ultra-mobile personal computer (UMPC), netbook, personal digital assistant (PDA) and other devices.

[0126] like Figure 5 As shown, the carbon flow cost allocation method provided in the embodiment of the present application further includes the following steps S6 to S7:

[0127] Step S6: Based on the acquired parameters of the AC power grid and the power flow solution, establish an expression for calculating the carbon flow cost allocated to each power source;

[0128] Step S7: According to the expression for calculating the carbon flow cost allocated to each power source, the carbon flow cost allocated to each power source is obtained and output.

[0129] In the application, based on the parameters and power flow solution of the acquired AC power grid, an expression for calculating the carbon flow cost allocated to each power source can also be established. According to the expression for calculating the carbon flow cost allocated to each power source, the carbon flow cost allocated to each power source can be calculated, thereby optimizing the power scheduling strategy, giving priority to scheduling power sources with low carbon flow costs, and reducing the use of power sources with high carbon flow costs. Correspondingly, the carbon flow cost allocated to each power source can also be output to the user end according to demand for easy viewing and analysis.

[0130] In one embodiment, the expression for calculating the carbon flow cost allocated to each power source is:

[0131] C Gk =(1-β)C k ,k=1,2,…,n;

[0132] Among them, C Gk represents the carbon flow cost allocated to the power source of node k, 1-β represents the carbon flow cost ratio coefficient shared by the power production link, C k represents the total carbon flow cost of the power supply of node k, and n represents the total number of nodes in the AC power grid.

[0133] The carbon flow cost allocation method provided in the embodiment of the present application is implemented based on the equivalent voltage source of the power supply of each node. Since the partial voltage expressions of each node driven by the equivalent voltage source of the power supply of each node and the partial power expressions of each branch dissipation are established, the partial power from each power supply lost in each branch of the power grid and the partial power from each power supply absorbed by each load are directly obtained, avoiding power flow tracking, thereby solving the problem that the existing carbon flow cost allocation method in the AC power grid is not only difficult to take into account the influence of network loss power, but also cannot take into account the influence of electro-magnetic exchange power between capacitive and inductive elements in the power grid, thereby damaging the rationality of carbon flow cost allocation.

[0134] In the embodiments of the present application, the problem of carbon flow cost allocation is solved from three aspects: the carbon flow cost allocated to the power grid operator, the carbon flow cost allocated to the load of each node, and the carbon flow cost allocated to each power source, thereby achieving a more reasonable carbon flow cost allocation, which helps the power grid operator to optimize operation and management, reduce carbon emissions, and promote sustainable development.

[0135] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0136] Embodiment 2

[0137] The present application also provides a carbon flow cost allocation device, which is applied to an AC power grid and is used to execute the method steps in the above carbon flow cost allocation method embodiment. The device can be a virtual appliance in a terminal device, which is run by a processor of the terminal device, or it can be the terminal device itself.

[0138] like Figure 6 As shown, the carbon flow cost allocation device 100 provided in the embodiment of the present application includes: a first construction module 101, a second construction module 102, a third construction module 103, a fourth construction module 104, and a result output module 105.

[0139] The first construction module 101 is used to establish the partial voltage expression of each node driven by the equivalent voltage source of the power supply of each node and the total voltage expression of each node in the AC power grid based on the acquired parameters and power flow solution of the AC power grid;

[0140] The second building module 102 is used to establish the partial power expression of each branch loss driven by the equivalent voltage source of the power supply of each node and the partial power expression absorbed by each load according to the partial voltage expression of each node and the total voltage expression of each node;

[0141] A third building module 103 is used to establish an expression for calculating the carbon flow cost allocated to the grid operator according to the power distribution expression of each branch loss;

[0142] The fourth building module 104 is used to establish an expression for calculating the carbon flow cost allocated to each load according to the expression of the power distribution absorbed by each load;

[0143] The result output module 105 is used to obtain and output the carbon flow cost allocated to the grid operator and the carbon flow cost allocated to each load based on the expression for calculating the carbon flow cost allocated to the grid operator and the expression for calculating the carbon flow cost allocated to each load.

[0144] In one embodiment, the carbon flow cost allocation device 100 further includes a fifth building module 105, which is used to:

[0145] Based on the acquired parameters and power flow solution of the AC power grid, an expression for calculating the carbon flow cost allocated to each power source is established;

[0146] The result output module 105 is further used to obtain and output the carbon flow cost allocated to each power source according to the expression used to calculate the carbon flow cost allocated to each power source.

[0147] In one embodiment, the expression for calculating the carbon flow cost allocated to each power source is:

[0148] C Gk =(1-β)C k ,k=1,2,…,n;

[0149] Among them, C Gk represents the carbon flow cost allocated to the power source of node k, 1-β represents the carbon flow cost ratio coefficient shared by the power production link, C k represents the total carbon flow cost of the power supply of node k, and n represents the total number of nodes in the AC power grid.

[0150] In one embodiment, the voltage division expressions of each node are:

[0151]

[0152] Among them, V i,k represents the voltage at node i driven by the equivalent voltage source of the power supply at node k, E k The voltage output by the equivalent voltage source of the power supply at node k, Z ih The elements corresponding to the rows of node i and the columns of node h in the inverse matrix Z of the node admittance matrix Y of the AC power grid with integrated loads under the condition that all power nodes are short-circuited to ground, Y hk represents the element of the row corresponding to node h and the column corresponding to node k in the node admittance matrix Y of the power grid with integrated load under the condition that all power nodes are short-circuited to ground, Ω represents the set of all nodes connected to power sources in the AC power grid, represents the set of remaining nodes of the power grid after deducting the nodes connected to the power supply, and n represents the total number of nodes in the AC power grid;

[0153] The total voltage expression of each node is:

[0154]

[0155] Among them, V i represents the total voltage at node i, V i,k represents the partial voltage at node i driven by the equivalent voltage source of the power supply at node k.

[0156] In one embodiment, the power distribution expression of each branch loss is:

[0157] L ij,k =Re[(Vi -V j )(y ij (V i,k -V j,k )) * ],i,j,k=1,2,…,n;

[0158] Among them, L ij,k represents the partial power loss of branch ij driven by the equivalent voltage source of the power supply at node k, Re represents the operator for taking the real part of a complex number, * represents the operator for taking the complex conjugate value, V i represents the total voltage at node i, V j represents the total voltage at node j, V i,k represents the voltage at node i driven by the equivalent voltage source of the power supply at node k, V j,k represents the partial voltage of node j driven by the equivalent voltage source of node k, y ij represents the admittance of branch ij, n represents the total number of nodes in the AC power grid;

[0159] The partial power expression absorbed by each load is:

[0160] D i0,k =Re[V i (y i0 V i,k ) * ],i,k=1,2,…,n;

[0161] Among them, D i0,k represents the partial power absorbed by the load at node i driven by the equivalent voltage source of the power supply at node k, Re represents the operator for taking the real part of a complex number, * represents the operator for taking the complex conjugate value, V i represents the total voltage at node i, V i,k represents the partial voltage of node i driven by the equivalent voltage source of the power supply of node k, y i0 represents the equivalent admittance of the load at node i, and n represents the total number of nodes in the AC power grid.

[0162] In one embodiment, the third building module 103 is further configured to:

[0163] According to the power distribution expression of each branch loss, the carbon flow cost ratio coefficient shared by the power dissipation link, the total carbon flow cost of the power supply of each node, and the total output power of the power supply of each node, an expression for allocating the carbon flow cost of each power supply to each branch is established;

[0164] According to the expression for allocating the carbon flow cost of each power source to each branch, establishing the expression for calculating the carbon flow cost allocated to the grid operator;

[0165] The expression for allocating the carbon flow cost of each power source to each branch is:

[0166]

[0167] Among them, C ij,k represents the value of allocating the carbon flow cost of the power source of node k to branch ij, β represents the carbon flow cost ratio coefficient shared by the energy dissipation link, C k represents the total carbon flow cost of the power supply at node k, P k represents the total output power of the power supply at node k, L ij,k represents the partial power loss of branch ij driven by the equivalent voltage source of the power supply of node k;

[0168] The expression for calculating the carbon flow cost allocated to the grid operator is:

[0169]

[0170] Among them, C N represents the carbon flow cost assigned to the grid operator, C ij,k It represents the value of allocating the carbon flow cost of the power source of node k to branch ij.

[0171] In one embodiment, the fourth building module 104 is further configured to:

[0172] According to the power distribution expression absorbed by each load, the carbon flow cost ratio coefficient shared by the power dissipation link, the total carbon flow cost of the power supply of each node, and the total output power of the power supply of each node, an expression for allocating the carbon flow cost of each power supply to each load is established;

[0173] According to the expression for allocating the carbon flow cost of each power source to each load, establishing the expression for calculating the carbon flow cost allocated to each load;

[0174] The expression for allocating the carbon flow cost of each power source to each load is:

[0175]

[0176] Among them, C i0,k represents the value of allocating the carbon flow cost of the power supply at node k to the load at node i, β represents the carbon flow cost ratio coefficient shared by the energy dissipation link, C k represents the total carbon flow cost of the power supply at node k, D i0,k represents the partial power absorbed by the load at node i driven by the equivalent voltage source at node k, P k represents the total output power of the power supply at node k;

[0177] The expression for calculating the carbon flow cost assigned to each load is:

[0178]

[0179] Among them, C Di represents the carbon flow cost of the load allocated to node i, C i0,k The value representing the carbon flow cost of the power source at node k allocated to the load at node i.

[0180] In application, each unit in the above device may be a software program module, or may be implemented by different logic circuits integrated in a processor or independent physical components connected to a processor, or may be implemented by multiple distributed processors.

[0181] Embodiment 3

[0182] like Figure 7 As shown, the embodiment of the present application further provides a terminal device 200, including: at least one processor 201 ( Figure 7 Only one processor is shown in the figure), memory 202, and a computer program 203 stored in the memory 202 and executable on at least one processor 201. When the processor 201 executes the computer program 203, the steps in the above-mentioned method embodiments are implemented.

[0183] In the application, the terminal device may include but is not limited to a processor, a memory, Figure 7 It is only an example of a terminal device and does not constitute a limitation on the terminal device. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components, such as human-computer interaction devices, input and output devices, network access devices, etc. The network access device may include a communication module for the terminal device to communicate with the user terminal.

[0184] In applications, the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. For example, the processor may be a timing controller (TCON). A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0185] In applications, the memory may be an internal storage unit of a terminal device in some embodiments, such as a hard disk or memory of the terminal device. The memory may also be an external storage device of the terminal device in other embodiments, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc., equipped on the terminal device. The memory may also include both an internal storage unit of the terminal device and an external storage device. The memory is used to store an operating system, an application program, a boot loader, data, and other programs, such as program code of a computer program. The memory may also be used to temporarily store data that has been output or is to be output.

[0186] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / modules are based on the same concept as the method embodiment of the present application. Their specific functions and technical effects can be found in the method embodiment part and will not be repeated here.

[0187] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example for illustration. In actual applications, the above-mentioned function allocation can be completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The functional modules in the embodiment can be integrated into a processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. In addition, the specific names of the functional modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0188] The embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0189] An embodiment of the present application provides a computer program product. When the computer program product runs on a terminal device, the terminal device can implement the steps in the above-mentioned various method embodiments.

[0190] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include at least: any entity or device capable of carrying the computer program code to the terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electric carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a disk or an optical disk.

[0191] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0192] Those of ordinary skill in the art will appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0193] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or module can be an electrical connection, a mechanical connection or other forms of connection.

[0194] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0195] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A carbon flow cost allocation method, characterized in that: Applied to an AC power grid, the method comprises: Based on the acquired parameters and power flow solution of the AC power grid, establish the partial voltage expression of each node driven by the equivalent voltage source of the power supply of each node in the AC power grid and the total voltage expression of each node; According to the partial voltage expressions of the nodes and the total voltage expressions of the nodes, establish the partial power expressions of the losses of the branches driven by the equivalent voltage sources of the power sources of the nodes and the partial power expressions absorbed by the loads; According to the power distribution expressions of each branch loss, an expression for calculating the carbon flow cost allocated to the grid operator is established; According to the partial power expressions absorbed by each load, an expression for calculating the carbon flow cost allocated to each load is established; Based on the expression for calculating the carbon flow cost allocated to the grid operator and the expression for calculating the carbon flow cost allocated to each load, the carbon flow cost allocated to the grid operator and the carbon flow cost allocated to each load are obtained and output.

2. The carbon flow cost allocation method according to claim 1, characterized in that: Also includes: Based on the acquired parameters and power flow solution of the AC power grid, an expression for calculating the carbon flow cost allocated to each power source is established; According to the expression for calculating the carbon flow cost allocated to each power source, the carbon flow cost allocated to each power source is obtained and output.

3. The carbon flow cost allocation method according to claim 2, characterized in that: The expression for calculating the carbon flow cost allocated to each power source is: C Gk =(1-β)C k ,k=1,2,…,n; Among them, C Gk represents the carbon flow cost allocated to the power source of node k, 1-β represents the carbon flow cost ratio coefficient shared by the power production link, C k represents the total carbon flow cost of the power supply of node k, and n represents the total number of nodes in the AC power grid.

4. The carbon flow cost allocation method according to claim 1, characterized in that: The voltage expression of each node is: Among them, V i，k represents the voltage at node i driven by the equivalent voltage source of the power supply at node k, E k The voltage output by the equivalent voltage source of the power supply at node k, Z ih The elements corresponding to the rows of node i and the columns of node h in the inverse matrix Z of the node admittance matrix Y of the AC power grid with integrated loads under the condition that all power nodes are short-circuited to ground, Y hk represents the element of the row corresponding to node h and the column corresponding to node k in the node admittance matrix Y of the power grid with integrated load under the condition that all power nodes are short-circuited to ground, Ω represents the set of all nodes connected to power sources in the AC power grid, represents the set of remaining nodes of the power grid after deducting the nodes connected to the power supply, and n represents the total number of nodes in the AC power grid; The total voltage expression of each node is: Among them, V i represents the total voltage at node i, V i，k represents the partial voltage at node i driven by the equivalent voltage source of the power supply at node k.

5. The carbon flow cost allocation method according to claim 1, characterized in that: The power distribution expression of each branch loss is: L ij，k =Re[(V i -V j )(y ij (V i，k -V j，k )) * ],i,j,k=1,2,...,n; Among them, L ij，k represents the partial power loss of branch ij driven by the equivalent voltage source of the power supply at node k, Re represents the operator for taking the real part of a complex number, * represents the operator for taking the complex conjugate value, V i represents the total voltage at node i, V j represents the total voltage at node j, V i，k represents the voltage at node i driven by the equivalent voltage source of the power supply at node k, V j，k represents the partial voltage of node j driven by the equivalent voltage source of node k, y ij represents the admittance of branch ij, n represents the total number of nodes in the AC power grid; The partial power expression absorbed by each load is: D i0，k =Re[V i (y i0 V i，k ) * ],i,k=1,2,...,n; Among them, D i0，k represents the partial power absorbed by the load at node i driven by the equivalent voltage source of the power supply at node k, Re represents the operator for taking the real part of a complex number, * represents the operator for taking the complex conjugate value, V i represents the total voltage at node i, V i，k represents the partial voltage of node i driven by the equivalent voltage source of the power supply of node k, y i0 represents the equivalent admittance of the load at node i, and n represents the total number of nodes in the AC power grid.

6. The carbon flow cost allocation method according to any one of claims 1 to 5, characterized in that: The formula for calculating the carbon flow cost allocated to the grid operator is established according to the power distribution expression of each branch loss, including: According to the power distribution expression of each branch loss, the carbon flow cost ratio coefficient shared by the power dissipation link, the total carbon flow cost of the power supply of each node, and the total output power of the power supply of each node, an expression for allocating the carbon flow cost of each power supply to each branch is established; According to the expression for allocating the carbon flow cost of each power source to each branch, establishing the expression for calculating the carbon flow cost allocated to the grid operator; The expression for allocating the carbon flow cost of each power source to each branch is: Among them, C ij，k represents the value of allocating the carbon flow cost of the power source of node k to branch ij, β represents the carbon flow cost ratio coefficient shared by the energy dissipation link, C k represents the total carbon flow cost of the power supply at node k, P k represents the total output power of the power supply at node k, L ij，k represents the partial power loss of branch ij driven by the equivalent voltage source of the power supply of node k; The expression for calculating the carbon flow cost allocated to the grid operator is: Among them, C N represents the carbon flow cost assigned to the grid operator, C ij，k It represents the value of allocating the carbon flow cost of the power source of node k to branch ij.

7. The carbon flow cost allocation method according to claim 6, characterized in that: The formula for calculating the carbon flow cost allocated to each load is established according to the partial power expression absorbed by each load, including: According to the power distribution expression absorbed by each load, the carbon flow cost ratio coefficient shared by the power dissipation link, the total carbon flow cost of the power supply of each node, and the total output power of the power supply of each node, an expression for allocating the carbon flow cost of each power supply to each load is established; According to the expression for allocating the carbon flow cost of each power source to each load, establishing the expression for calculating the carbon flow cost allocated to each load; The expression for allocating the carbon flow cost of each power source to each load is: Among them, C i0，k represents the value of allocating the carbon flow cost of the power supply at node k to the load at node i, β represents the carbon flow cost ratio coefficient shared by the energy dissipation link, C k represents the total carbon flow cost of the power supply at node k, D i0，k represents the partial power absorbed by the load at node i driven by the equivalent voltage source at node k, P k represents the total output power of the power supply at node k; The expression for calculating the carbon flow cost assigned to each load is: Among them, C Di represents the carbon flow cost of the load allocated to node i, C i0，k The value representing the carbon flow cost of the power source at node k allocated to the load at node i.

8. A carbon flow cost allocation device, characterized in that: Applied to an AC power grid, the device comprises: A first building module is used to establish, based on the acquired parameters and power flow solution of the AC power grid, the partial voltage expressions of each node driven by the equivalent voltage source of the power supply of each node in the AC power grid and the total voltage expression of each node; The second building module is used to establish the partial power expression of each branch loss driven by the equivalent voltage source of the power supply of each node and the partial power expression absorbed by each load according to the partial voltage expression of each node and the total voltage expression of each node; A third building module is used to establish an expression for calculating the carbon flow cost allocated to the grid operator according to the power distribution expression of each branch loss; A fourth building block is used to establish an expression for calculating the carbon flow cost allocated to each load according to the expression of the power distribution absorbed by each load; The result output module is used to obtain and output the carbon flow cost allocated to the grid operator and the carbon flow cost allocated to each load based on the expression for calculating the carbon flow cost allocated to the grid operator and the expression for calculating the carbon flow cost allocated to each load.

9. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the carbon flow cost allocation method according to any one of claims 1 to 7 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the carbon flow cost allocation method according to any one of claims 1 to 7 are implemented.

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