Carbon flow calculation method and system considering full life cycle carbon emission of power supply side

Abstract

The invention discloses a carbon flow calculation method and system considering full life cycle carbon emission of a power supply side, and the method comprises the steps: carrying out the integrity check and format check of power data, obtaining the operation parameters of a power system, carrying out the power flow calculation of the power system, and obtaining the voltage amplitude and phase angle of each node, obtaining active power and network loss of each branch; determining carbon emissions of an equipment production stage, a material transportation stage, an engineering construction stage, a power station operation and maintenance stage and a decommissioning stage, and establishing a power supply side full life cycle carbon emission model based on the emissions of all the stages; and based on the voltage amplitude and the phase angle of each node, the active power and the network loss of each branch and a power supply side full-life-cycle carbon emission model, establishing a power system carbon flow model considering power supply side full-life-cycle carbon emission. More accurate metering and tracking of the carbon flow of the electric power system can be realized, and certain practical benefits are achieved.

Description

Technical Field

[0001] The present invention relates to the field of low-carbon energy technology, and more specifically, to a carbon flow calculation method and system that considers the full life cycle carbon emissions of a power supply side. Background Art

[0002] The carbon emission flow of a power system is a coupled carbon emission that exists in conjunction with the power flow and moves in a direction with the system's active power flow. It is a type of virtual network flow in the power system. Without causing ambiguity, in the field of power systems, the carbon emission flow of a power system can be referred to simply as the carbon emission flow or carbon flow. The carbon emission flow is closely related to the power system's power flow, and power flow calculation is the basis for carbon emission flow calculation. The operating state of the power system, including the grid structure, system parameters, and boundary conditions, as well as the carbon emission characteristics of the generator sets, all affect the distribution of the carbon emission flow. The calculation of the carbon emission flow generally relies on energy data and power system power flow calculation data. Based on the power flow calculation of a given topology, the necessary intermediate parameters for carbon flow calculation, such as the branch power flow distribution matrix, load distribution matrix, and injection distribution matrix, are obtained. Finally, using relevant methods, the final power system distribution result is calculated.

[0003] The current method for calculating carbon emission flows in power systems only considers the carbon emissions of thermal power units in operation. It assumes that the carbon potential of hydropower, nuclear power, wind power and other units is zero, and ignores carbon emissions from the production, transportation, construction, and decommissioning of new energy power generation units. As a result, the calculation results are often too ideal, making it impossible to achieve accurate measurement and tracking of carbon flows in power systems. Summary of the Invention

[0004] According to the present invention, a carbon flow calculation method and system that considers the carbon emissions of the entire life cycle on the power supply side are provided to solve the technical problem that in the current power system carbon emission flow calculation method, only the carbon emissions of thermal power units in operation are considered, and the carbon potential of hydropower, nuclear power, wind power and other units is considered to be zero, while the carbon emissions of new energy power generation units in production, transportation, construction, decommissioning and other aspects are ignored, resulting in the calculation results being often too ideal and unable to achieve accurate measurement and tracking of the carbon flow of the power system.

[0005] According to a first aspect of the present invention, a carbon flow calculation method is provided that considers carbon emissions over the entire life cycle of a power supply, including:

[0006] Perform integrity and format checks on power data, obtain power system operating parameters, perform power system flow calculations, obtain the voltage amplitude and phase angle of each node, and obtain the active power and network loss of each branch;

[0007] Determine the carbon emissions during the equipment production, material transportation, construction, power plant operation and maintenance, and decommissioning stages. Build a full lifecycle carbon emissions model for the power supply based on the emissions at each stage.

[0008] Based on the voltage amplitude and phase angle of each node, the active power and network loss of each branch and the full life cycle carbon emission model of the power supply side, a power system carbon flow model considering the full life cycle carbon emissions of the power supply side is established.

[0009] Optionally, determine the carbon emissions during the equipment production phase, material transportation phase, engineering construction phase, power plant operation and maintenance phase, and decommissioning phase, including:

[0010] The carbon emissions during the equipment production phase are determined as:

[0011]

[0012] Among them, C P Refers to the CO2 emissions generated by the generator set equipment during the production stage, N1 is the total number of types of materials used in the production of related equipment, g pi is the total weight of the i-th material used to produce the relevant equipment; Q pi The carbon emission coefficient of the i-th material used in the production of relevant equipment;

[0013] The carbon emissions during the material transportation phase are determined as:

[0014]

[0015] Among them, C T is the CO2 emission during the material transportation process of the generator set; N2 is the total number of types of materials used in the transportation process; g ti is the total weight of the i-th material transported during the transportation phase; Q ti D is the carbon emission coefficient when transporting the i-th material; i is the distance when transporting the i-th material;

[0016] The carbon emissions during the construction phase are determined as follows:

[0017]

[0018] Among them, C C is the CO2 emissions generated by relevant production activities during the construction phase, N3 is the total number of types of materials used in the construction process; g ci is the total weight of the i-th material used in the construction phase; Q ci is the carbon emission coefficient of the i-th material used in the construction phase, C L is carbon sink loss emission; C C，M CO2 emissions from the production of building materials during the construction phase;

[0019] The carbon sink loss C L for:

[0020]

[0021] Among them, N4 is the number of vegetation types occupied during the construction or operation phase; S li is the area of vegetation occupied or damaged in the i-th place; f li is the carbon sink loss and carbon emission factor of the i-th vegetation, T Li The time of occupation or destruction of the i-th vegetation;

[0022] The carbon emissions during the power plant operation and maintenance phase are determined as:

[0023]

[0024] Among them, carbon emissions in the operation and maintenance stage come from resource consumption and replacement of failed materials. O,P C is the carbon emission during the production process of failed materials in the operation and maintenance stage; O,T is the carbon emission during the transportation of failed materials during the operation and maintenance phase; N5 represents the total number of consumables during the operation and maintenance phase of the power station, g oi Indicates the mass of the i-th consumable, Q oi represents the carbon emission factor of the i-th consumable;

[0025] The carbon emissions during the decommissioning phase are determined as:

[0026]

[0027] Among them, the carbon emissions in the decommissioning stage of the project come from the waste treatment process and the waste recycling process. N6 represents the total amount of waste such as concrete and resin involved in the wind farm treatment process. N7 represents the total amount of recycled resources such as metal materials in the decommissioning stage. di represents the quality of the i-th resource in the waste treatment process, Q di represents the carbon emission factor of the i-th resource in the waste treatment process, g ri Represents the quality of the i-th resource in the recycling process, Q ri represents the carbon emission factor of the i-th resource, and ξ represents the recovery coefficient.

[0028] Optionally, a full life cycle carbon emission model for the power supply side can be established based on the emissions at each stage, including:

[0029] Calculate the full life cycle carbon emissions of the power supply side according to the following formula:

[0030] C PP =C P +C T +C C +CO +C R

[0031] Among them, C PP is the total amount of CO2 generated during the entire life cycle of the generator set; C P Refers to the CO2 emissions generated by the generator set equipment during the production stage; C T is the CO2 emission during the material transportation process of the generator set; C C is the CO2 emissions generated by relevant production activities during the construction phase; C O is the CO2 emissions generated by the generator set during the operation and maintenance phase; C R It is the CO2 emissions generated by the power generation unit during the decommissioning stage.

[0032] Optionally, based on the voltage amplitude and phase angle of each node, the active power of each branch and network loss, and the power supply side full life cycle carbon emission model, a power system carbon flow model that considers the power supply side full life cycle carbon emissions is established, including:

[0033] Determine the branch carbon flow F as the cumulative amount of coupled carbon emissions corresponding to the flow through a branch within a given time;

[0034] Determine the branch carbon flow rate R. The branch carbon flow rate is defined as the accumulation of carbon flow per unit time and is represented by the symbol R. The definition of the branch / node carbon flow rate is:

[0035] R=dF / dt

[0036] Determine the branch carbon flow density ρ, and define the ratio of the carbon flow rate R of any branch of the power system to the active power flow P as the branch carbon flow density, represented by the symbol ρ, and the definition formula is:

[0037] ρ=R / P

[0038] Determine the node carbon potential e n , the relationship between the carbon emission flow and active power flow at the nodes in the system will be described by the concept of node carbon potential. The carbon potential of node n is defined as follows:

[0039]

[0040] N+ is the set of all branches connected to node n with current flowing into node n, i is the branch subscript, P i It represents the active power flowing from branch i to node n. The node carbon potential has the same dimension as the branch carbon flow density and is numerically equal to the carbon flow density ρ of all branches flowing into node n. i Active current P i is the weighted average of the weights;

[0041] According to the energy scheduling principle, the carbon flow density of all branches flowing out of the node is ρ p The node carbon potential e of this node n equal:

[0042] ρ P =e n

[0043] Optionally, based on the voltage amplitude and phase angle of each node, the active power of each branch and network loss, and the power supply side full life cycle carbon emission model, a power system carbon flow model that considers the power supply side full life cycle carbon emissions is established, which also includes:

[0044] Determine the carbon potential of a generator set over its entire life cycle PP for:

[0045] e PP =C PP / P total

[0046] Among them, C PP is the total carbon emissions of the unit throughout its life cycle, P total The amount of electricity it generates during its life cycle;

[0047] Determine the carbon flow rate R corresponding to the network loss P,Loss , the carbon emissions generated by the transmission loss of the power grid are allocated to the network, and the carbon flow rate R allocated to line l P,Loss Expressed as:

[0048] R P,Loss =ρ P P Loss

[0049] Among them, P P,Loss represents the power loss of line l;

[0050] Considering the network loss, the carbon flow rate of each branch is expressed as:

[0051] R P =ρ P P+ρ P P Loss

[0052] P is the branch active power;

[0053] Taking into account network losses and carbon emissions over the entire life cycle of the unit, the carbon potential of each node is determined by the active power G injected by the branches and generators connected to the node. Following the principle of energy merging, the calculation formula for the node carbon potential is:

[0054]

[0055] φ is the set of generators connected to the node, and Г is the set of branches connected to the node.

[0056] According to another aspect of the present invention, a carbon flow calculation system is provided that considers the carbon emissions of the power supply side throughout its entire life cycle, including:

[0057] The power flow calculation module is used to check the integrity and format of power data, obtain power system operating parameters, perform power system power flow calculations, obtain the voltage amplitude and phase angle of each node, and obtain the active power and network loss of each branch;

[0058] Establish a carbon emission model module to determine the carbon emissions during the equipment production stage, material transportation stage, engineering construction stage, power plant operation and maintenance stage, and decommissioning stage. Based on the emissions at each stage, establish a full life cycle carbon emission model for the power supply side.

[0059] A carbon flow model module is established to establish a power system carbon flow model that takes into account the full life cycle carbon emissions of the power supply side based on the voltage amplitude and phase angle of each node, the active power and network loss of each branch, and the full life cycle carbon emission model of the power supply side.

[0060] Optionally, a carbon emission model module is established, including:

[0061] The carbon emissions during the equipment production phase are determined as:

[0062]

[0063] Among them, C P Refers to the CO2 emissions generated by the generator set equipment during the production stage, N1 is the total number of types of materials used in the production of related equipment, g pi is the total weight of the i-th material used to produce the relevant equipment; Q pi The carbon emission coefficient of the i-th material used in the production of relevant equipment;

[0064] The carbon emissions during the material transportation phase are determined as:

[0065]

[0066] Among them, C T is the CO2 emission during the material transportation process of the generator set; N2 is the total number of types of materials used in the transportation process; g ti is the total weight of the i-th material transported during the transportation phase; Q ti D is the carbon emission coefficient when transporting the i-th material; i is the distance when transporting the i-th material;

[0067] The carbon emissions during the construction phase are determined as follows:

[0068]

[0069] Among them, C C is the CO2 emissions generated by relevant production activities during the construction phase, N3 is the total number of types of materials used in the construction process; g ci is the total weight of the i-th material used in the construction phase; Q ci is the carbon emission coefficient of the i-th material used in the construction phase, C L is carbon sink loss emission; C C，M CO2 emissions from the production of building materials during the construction phase;

[0070] The carbon sink loss C L for:

[0071]

[0072] Among them, N4 is the number of vegetation types occupied during the construction or operation phase; S li is the area of vegetation occupied or damaged in the i-th place; f li is the carbon sink loss and carbon emission factor of the i-th vegetation, T Li is the time of occupation or destruction of the i-th vegetation;

[0073] The carbon emissions during the power plant operation and maintenance phase are determined as:

[0074]

[0075] Among them, carbon emissions in the operation and maintenance stage come from resource consumption and replacement of failed materials. O,P C is the carbon emission during the production process of failed materials in the operation and maintenance stage; O,T is the carbon emission during the transportation of failed materials during the operation and maintenance phase; N5 represents the total number of consumables during the operation and maintenance phase of the power station, g oi Indicates the mass of the i-th consumable, Q oi represents the carbon emission factor of the i-th consumable;

[0076] The carbon emissions during the decommissioning phase are determined as:

[0077]

[0078] Among them, the carbon emissions in the decommissioning stage of the project come from the waste treatment process and the waste recycling process. N6 represents the total amount of waste such as concrete and resin involved in the wind farm treatment process. N7 represents the total amount of recycled resources such as metal materials in the decommissioning stage. di represents the quality of the i-th resource in the waste treatment process, Q di represents the carbon emission factor of the i-th resource in the waste treatment process, g ri Indicates the quality of the i-th resource in the recycling process, Qri represents the carbon emission factor of the i-th resource, and ξ represents the recovery coefficient.

[0079] Optionally, a carbon emission model module is established, including:

[0080] The life cycle carbon emissions calculation submodule is used to calculate the life cycle carbon emissions of the power supply side according to the following formula:

[0081] C PP =C P +C T +C C +C O +C R

[0082] Among them, C PP is the total amount of CO2 generated during the entire life cycle of the generator set; C P Refers to the CO2 emissions generated by the generator set equipment during the production stage; C T is the CO2 emission during the material transportation process of the generator set; C C is the CO2 emissions generated by relevant production activities during the construction phase; C O is the CO2 emissions generated by the generator set during the operation and maintenance phase; C R It is the CO2 emissions generated by the power generation unit during the decommissioning stage.

[0083] Optionally, a carbon flow model module is established, including:

[0084] The branch carbon flow determination submodule is used to determine the branch carbon flow F as the cumulative amount of coupled carbon emissions corresponding to the current passing through a branch within a given time;

[0085] The branch carbon flow rate determination submodule is used to determine the branch carbon flow rate R. The branch carbon flow rate is defined as the accumulation of carbon flow per unit time and is represented by the symbol R. The definition of the branch / node carbon flow rate is:

[0086] R=dF / dt

[0087] The branch carbon flow density determination submodule is used to determine the branch carbon flow density ρ. The ratio of the carbon flow rate R to the active power flow P of any branch in the power system is defined as the branch carbon flow density, which is represented by the symbol ρ and is defined as follows:

[0088] ρ=R / P

[0089] Determine the node carbon potential submodule, used to determine the node carbon potential e n , the relationship between the carbon emission flow and active power flow at the nodes in the system will be described by the concept of node carbon potential. The carbon potential of node n is defined as follows:

[0090]

[0091] N+ is the set of all branches connected to node n with current flowing into node n, i is the branch subscript, P i It represents the active power flowing from branch i to node n. The node carbon potential has the same dimension as the branch carbon flow density and is numerically equal to the carbon flow density ρ of all branches flowing into node n. i Active current P i is the weighted average of the weights;

[0092] According to the energy scheduling principle, the carbon flow density of all branches flowing out of the node is ρ p The node carbon potential e of this node n equal:

[0093] ρ P =e n .

[0094] Optionally, establishing a carbon flow model module further includes:

[0095] Determine the carbon potential of the generator set throughout its life cycle submodule, which is used to determine the carbon potential of the generator set throughout its life cycle PP for:

[0096] e PP =C PP / P total

[0097] Among them, C PP is the total carbon emissions of the unit throughout its life cycle, P total The amount of electricity it generates during its life cycle;

[0098] Determine the carbon flow rate R corresponding to the network loss P,Loss , the carbon emissions generated by the transmission loss of the power grid are allocated to the network, and the carbon flow rate R allocated to line l P,Loss Expressed as:

[0099] R P,Loss =ρ P P Loss

[0100] Among them, P P,Loss represents the power loss of line l;

[0101] Considering the network loss, the carbon flow rate of each branch is expressed as:

[0102] R P =ρ P P+ρ P P Loss

[0103] P is the branch active power;

[0104] Taking into account network losses and carbon emissions over the entire life cycle of the unit, the carbon potential of each node is determined by the active power G injected by the branches and generators connected to the node. Following the principle of energy merging, the calculation formula for the node carbon potential is:

[0105]

[0106] φ is the set of generators connected to the node, and Г is the set of branches connected to the node.

[0107] Therefore, a method for calculating the carbon flow of the power system that takes into account the carbon emissions of the power supply side throughout its life cycle is provided. The life cycle assessment method (LCA) is combined with the carbon flow model to comprehensively consider the carbon emissions of the power supply side throughout its life cycle, providing a more rigorous calculation basis for the carbon flow model of the power system.

[0108] This model overcomes the current limitation of focusing solely on carbon emissions from primary energy consumption in power system carbon flow calculations. It can analyze carbon emission factors throughout the entire life cycle and at each stage of each power source type. Combining actual installed capacity, power generation, and plant life data for each type of power source, it provides a more comprehensive measurement of various indirect carbon emissions. It provides a more rigorous calculation model and method that better reflects the actual carbon emissions of power systems, addresses the coarse granularity and poor calculation accuracy of current carbon flow models, and provides more accurate data for carbon flow calculations. This contributes to more precise measurement and tracking of power system carbon flows, with tangible practical benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0109] A more complete understanding of exemplary embodiments of the present invention may be obtained by referring to the following drawings:

[0110] Figure 1 This is a flow chart of a carbon flow calculation method considering the full life cycle carbon emissions of the power supply side according to this embodiment;

[0111] Figure 2 Schematic diagram of the power system carbon flow calculation method considering the full life cycle carbon emissions of the power supply side according to this embodiment;

[0112] Figure 3 This is a schematic diagram of a carbon flow calculation system according to this embodiment that considers the carbon emissions of the power supply side throughout its life cycle. DETAILED DESCRIPTION

[0113] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided to provide a thorough and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments shown in the accompanying drawings is not intended to limit the present invention. In the accompanying drawings, identical elements are denoted by the same reference numerals.

[0114] Unless otherwise specified, the terms used herein (including technical terms) have the meanings commonly understood by those skilled in the art. In addition, it is understood that terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0115] According to a first aspect of the present invention, a carbon flow calculation method 100 is provided that considers the carbon emissions of the power supply side throughout its life cycle. Figure 1 As shown, the method 100 includes:

[0116] S101: Perform integrity and format checks on power data, obtain power system operating parameters, perform power system power flow calculations, obtain voltage amplitudes and phase angles at each node, and obtain active power and network losses at each branch;

[0117] S102: Determine the carbon emissions during the equipment production stage, material transportation stage, engineering construction stage, power plant operation and maintenance stage, and decommissioning stage. Based on the emissions at each stage, establish a full life cycle carbon emissions model for the power supply side.

[0118] S103: Based on the voltage amplitude and phase angle of each node, the active power and network loss of each branch and the full life cycle carbon emission model of the power supply side, a power system carbon flow model that considers the full life cycle carbon emissions of the power supply side is established.

[0119] Specifically, refer to Figure 2 As shown, the integrity and format of the power data are checked, the power system operating parameters are obtained, the power system flow calculation is performed, the voltage amplitude and phase angle of each node are obtained, and the active power and network loss of each branch are further obtained.

[0120] Establish a full life cycle carbon emission model for the power supply side. The specific calculation method is as follows:

[0121] The power supply side mainly considers the carbon emissions of the generator set throughout its life cycle, which includes five stages: equipment production, material transportation, engineering construction, power station operation and maintenance, and decommissioning. The calculation model is shown below:

[0122] C PP =CP +C T +C C +C O +C R

[0123] C PP is the total amount of CO2 generated during the entire life cycle of the generator set; C P Refers to the CO2 emissions generated by the generator set equipment during the production stage; C T is the CO2 emission during the material transportation process of the generator set; C C is the CO2 emissions generated by relevant production activities during the construction phase; C O is the CO2 emissions generated by the generator set during the operation and maintenance phase; C R It is the CO2 emissions generated by the power generation unit during the decommissioning stage.

[0124] (1) Equipment production stage

[0125]

[0126] N1 is the total number of types of materials used in the production of related equipment, g pi is the total weight of the i-th material used to produce the relevant equipment; Q pi is the carbon emission coefficient of the i-th material used in the production of related equipment.

[0127] (2) Material transportation stage

[0128]

[0129] N2 is the total number of types of materials used in the transportation process; g ti is the total weight of the i-th material transported during the transportation phase; Q ti D is the carbon emission coefficient when transporting the i-th material; i is the distance when transporting the i-th material.

[0130] (3) Construction phase

[0131]

[0132] N3 is the total number of types of materials used in the construction process; g ci is the total weight of the i-th material used in the construction phase; Q ci is the carbon emission coefficient of the i-th material used in the construction phase, C L is carbon sink loss emission; C C，M Carbon dioxide emissions from the production of building materials during the construction phase.

[0133] The accounting model for indirect carbon emissions from carbon sink losses during the construction phase is as follows:

[0134]

[0135] N4 is the number of vegetation types occupied during the construction or operation phase; S li is the area of vegetation occupied or damaged in the i-th place; f li is the carbon sink loss and carbon emission factor of the i-th vegetation, T Li is the occupation or destruction time of the i-th vegetation.

[0136] (4) Power station operation and maintenance stage

[0137]

[0138] Carbon emissions during the operation and maintenance phase come from resource consumption and replacement of failed materials. O,P C is the carbon emission during the production process of failed materials in the operation and maintenance stage; O,T is the carbon emission during the transportation of failed materials during the operation and maintenance phase; N5 represents the total number of consumables during the operation and maintenance phase of the power station, g oi Indicates the mass of the i-th consumable, Q oi Represents the carbon emission factor of the i-th consumable.

[0139] (5) Decommissioning

[0140]

[0141] Carbon emissions during the decommissioning phase of a project mainly come from waste treatment and waste recycling. Waste treatment mainly involves landfilling of waste (concrete and other construction waste) and incineration of waste (polymer materials such as epoxy resin). N6 represents the total amount of resources involved in the wind farm treatment process (concrete, resin and other wastes), N7 represents the total amount of recycled resources (metal materials, etc.) during the decommissioning phase, and g di represents the quality of the i-th resource in the waste treatment process, Q di represents the carbon emission factor of the i-th resource in the waste treatment process, g ri Indicates the quality of the i-th resource in the recycling process, Q ri represents the carbon emission factor of the i-th resource, and ξ represents the recovery coefficient.

[0142] A calculation model for the power system carbon flow model is established that considers the carbon emissions of the power supply side throughout its life cycle, including branch carbon flow, branch carbon flow rate, branch carbon flow density, node carbon potential, etc. The specific calculation method is as follows:

[0143] (1) Branch carbon flow: F

[0144] The cumulative amount of coupled carbon emissions corresponding to the flow through a branch over a given period of time. The unit of carbon flow is the same as that of carbon emissions, typically tCO2 or kgCO2.

[0145] (2) Branch carbon flow rate R

[0146] The branch carbon flow rate is defined as the accumulation of carbon flow per unit time, which is equivalent to the concept of "flow rate" and is represented by the symbol R. The branch / node carbon flow rate is defined as:

[0147] R=dF / dt

[0148] The unit of branch carbon flow rate is generally t CO2 / h.

[0149] (3) Branch carbon flow density ρ

[0150] The ratio of the carbon flow rate R to the active power flow P in any branch of the power system is defined as the carbon flow density of the branch, represented by the symbol ρ, and the definition is:

[0151] ρ=R / P

[0152] The unit of branch carbon flow density is t CO2 / kWh.

[0153] (4) Node carbon potential: e n

[0154] The relationship between carbon emission flow and active power flow at a node in the system is described by the concept of node carbon potential. The carbon potential of node n is defined as follows:

[0155]

[0156] N+ is the set of all branches connected to node n that have flow flowing into node n, and i is the branch subscript. i Represents the active power flowing from branch i to node n. The node carbon potential has the same dimension as the branch carbon flow density, generally kgCO2 / kWh, and is numerically equal to the carbon flow density ρ of all branches flowing into node n. i Active current P i The physical meaning of the node carbon potential is the carbon emission value on the power generation side caused by the consumption of unit electricity at the node.

[0157] According to the energy scheduling principle, the carbon flow density of all branches flowing out of the node is ρ p The node carbon potential e of this node n equal:

[0158] ρ P =e n

[0159] (5) Carbon potential of generator set throughout its life cycle: e PP

[0160] The carbon potential of a specific generating unit is equal to the carbon emission intensity of its power generation. Its physical meaning is the carbon emissions per unit of electricity produced by the unit. It is collectively referred to as the unit carbon potential, and its unit is kg CO2 / kWh.

[0161] In conventional unit carbon potential calculations, the carbon potential of low-carbon units such as hydropower, nuclear power, and wind power is often considered to be zero. In the present invention, the carbon emissions of the generator set throughout its life cycle, C PP Therefore, both thermal power units and new energy units have unit carbon potential, and the corresponding unit full life cycle carbon potential can be expressed as:

[0162] e PP =C PP / P total

[0163] C PP is the total carbon emissions of the unit over its entire life cycle, in t CO2; P total The amount of electricity generated during its life cycle, in kW or MW.

[0164] (6) Carbon flow rate corresponding to network loss: R P,Loss

[0165] Allocate the carbon emissions generated by the transmission loss of the power grid to the network, and the carbon flow rate R allocated to line l is P,Loss It can be expressed as:

[0166] R P,Loss =ρ P P Loss

[0167] Among them, P P,Loss Represents the power loss of line l.

[0168] Taking network loss into consideration, the carbon flow rate of each branch is expressed as follows:

[0169] R P =ρ P P+ρ P P Loss

[0170] P is the branch active power, in kW or MW.

[0171] (7) Node carbon potential calculation model

[0172] Taking into account network losses and the carbon emissions of the unit throughout its life cycle, the carbon potential of each node is determined by the active power G (in kW or MW) injected by the branches and generators connected to the node. Following the principle of energy merging, the calculation formula for the node carbon potential is:

[0173]

[0174] φ is the set of generators connected to the node, and Г is the set of branches connected to the node.

[0175] Optionally, determine the carbon emissions during the equipment production phase, material transportation phase, engineering construction phase, power plant operation and maintenance phase, and decommissioning phase, including:

[0176] The carbon emissions during the equipment production phase are determined as:

[0177]

[0178] Among them, C P Refers to the CO2 emissions generated by the generator set equipment during the production stage, N1 is the total number of types of materials used in the production of related equipment, g pi is the total weight of the i-th material used to produce the relevant equipment; Q pi The carbon emission coefficient of the i-th material used in the production of relevant equipment;

[0179] The carbon emissions during the material transportation phase are determined as:

[0180]

[0181] Among them, C T is the CO2 emission during the material transportation process of the generator set; N2 is the total number of types of materials used in the transportation process; g ti is the total weight of the i-th material transported during the transportation phase; Q ti D is the carbon emission coefficient when transporting the i-th material; i is the distance when transporting the i-th material;

[0182] The carbon emissions during the construction phase are determined as follows:

[0183]

[0184] Among them, C C is the CO2 emissions generated by relevant production activities during the construction phase, N3 is the total number of types of materials used in the construction process; g ci is the total weight of the i-th material used in the construction phase; Q ci is the carbon emission coefficient of the i-th material used in the construction phase, C L is carbon sink loss emission; C C，M CO2 emissions from the production of building materials during the construction phase;

[0185] The carbon sink loss C L for:

[0186]

[0187] Among them, N4 is the number of vegetation types occupied during the construction or operation phase; S li is the area of vegetation occupied or damaged in the i-th place; f li is the carbon sink loss and carbon emission factor of the i-th vegetation, T Li The time of occupation or destruction of the i-th vegetation;

[0188] The carbon emissions during the power plant operation and maintenance phase are determined as:

[0189]

[0190] Among them, carbon emissions in the operation and maintenance stage come from resource consumption and replacement of failed materials. O,P C is the carbon emission during the production process of failed materials in the operation and maintenance stage; O,T is the carbon emission during the transportation of failed materials during the operation and maintenance phase; N5 represents the total number of consumables during the operation and maintenance phase of the power station, g oi Indicates the mass of the i-th consumable, Q oi represents the carbon emission factor of the i-th consumable;

[0191] The carbon emissions during the decommissioning phase are determined as:

[0192]

[0193] Among them, the carbon emissions in the decommissioning stage of the project come from the waste treatment process and the waste recycling process. N6 represents the total amount of waste such as concrete and resin involved in the wind farm treatment process. N7 represents the total amount of recycled resources such as metal materials in the decommissioning stage. di represents the quality of the i-th resource in the waste treatment process, Q di represents the carbon emission factor of the i-th resource in the waste treatment process, g ri Indicates the quality of the i-th resource in the recycling process, Q ri represents the carbon emission factor of the i-th resource, and ξ represents the recovery coefficient.

[0194] Optionally, a full life cycle carbon emission model for the power supply side can be established based on the emissions at each stage, including:

[0195] Calculate the full life cycle carbon emissions of the power supply side according to the following formula:

[0196] C PP =C P +C T +C C +C O +C R

[0197] Among them, C PP is the total amount of CO2 generated during the entire life cycle of the generator set; C PRefers to the CO2 emissions generated by the generator set equipment during the production stage; C T is the CO2 emission during the material transportation process of the generator set; C C is the CO2 emissions generated by relevant production activities during the construction phase; C O is the CO2 emissions generated by the generator set during the operation and maintenance phase; C R It is the CO2 emissions generated by the power generation unit during the decommissioning stage.

[0198] Optionally, based on the voltage amplitude and phase angle of each node, the active power of each branch and network loss, and the power supply side full life cycle carbon emission model, a power system carbon flow model that considers the power supply side full life cycle carbon emissions is established, including:

[0199] Determine the branch carbon flow F as the cumulative amount of coupled carbon emissions corresponding to the flow through a branch within a given time;

[0200] Determine the branch carbon flow rate R. The branch carbon flow rate is defined as the accumulation of carbon flow per unit time and is represented by the symbol R. The definition of the branch / node carbon flow rate is:

[0201] R=dF / dt

[0202] Determine the branch carbon flow density ρ, and define the ratio of the carbon flow rate R of any branch of the power system to the active power flow P as the branch carbon flow density, represented by the symbol ρ, and the definition formula is:

[0203] ρ=R / P

[0204] Determine the node carbon potential e n , the relationship between the carbon emission flow and active power flow at the nodes in the system will be described by the concept of node carbon potential. The carbon potential of node n is defined as follows:

[0205]

[0206] N+ is the set of all branches connected to node n with current flowing into node n, i is the branch subscript, P i It represents the active power flowing from branch i to node n. The node carbon potential has the same dimension as the branch carbon flow density and is numerically equal to the carbon flow density ρ of all branches flowing into node n. i Active current P i is the weighted average of the weights;

[0207] According to the energy scheduling principle, the carbon flow density of all branches flowing out of the node is ρ p The node carbon potential e of this node n equal:

[0208] ρ P =e n

[0209] Optionally, based on the voltage amplitude and phase angle of each node, the active power of each branch and network loss, and the power supply side full life cycle carbon emission model, a power system carbon flow model that considers the power supply side full life cycle carbon emissions is established, which also includes:

[0210] Determine the carbon potential of a generator set over its entire life cycle PP for:

[0211] e PP =C PP / P total

[0212] Among them, C PP is the total carbon emissions of the unit throughout its life cycle, P total The amount of electricity it generates during its life cycle;

[0213] Determine the carbon flow rate R corresponding to the network loss P,Loss , the carbon emissions generated by the transmission loss of the power grid are allocated to the network, and the carbon flow rate R allocated to line l P,Loss Expressed as:

[0214] R P,Loss =ρ P P Loss

[0215] Among them, P P,Loss represents the power loss of line l;

[0216] Considering the network loss, the carbon flow rate of each branch is expressed as:

[0217] R P =ρ P P+ρ P P Loss

[0218] P is the branch active power;

[0219] Taking into account network losses and carbon emissions over the entire life cycle of the unit, the carbon potential of each node is determined by the active power G injected by the branches and generators connected to the node. Following the principle of energy merging, the calculation formula for the node carbon potential is:

[0220]

[0221] φ is the set of generators connected to the node, and Г is the set of branches connected to the node.

[0222] Therefore, a method for calculating the carbon flow of the power system that takes into account the carbon emissions of the power supply side throughout its life cycle is provided. The life cycle assessment method (LCA) is combined with the carbon flow model to comprehensively consider the carbon emissions of the power supply side throughout its life cycle, providing a more rigorous calculation basis for the carbon flow model of the power system.

[0223] This model overcomes the current limitation of focusing solely on carbon emissions from primary energy consumption in power system carbon flow calculations. It can analyze carbon emission factors throughout the entire life cycle and at each stage of each power source type. Combining actual installed capacity, power generation, and plant life data for each type of power source, it provides a more comprehensive measurement of various indirect carbon emissions. It provides a more rigorous calculation model and method that better reflects the actual carbon emissions of power systems, addresses the coarse granularity and poor calculation accuracy of current carbon flow models, and provides more accurate data for carbon flow calculations. This contributes to more precise measurement and tracking of power system carbon flows, with tangible practical benefits.

[0224] According to another aspect of the present invention, a carbon flow calculation system 300 is provided that considers the carbon emissions of the power supply side throughout its life cycle. Figure 3 As shown, the system 300 includes:

[0225] The power flow calculation module 310 is used to perform integrity and format checks on power data, obtain power system operating parameters, perform power system power flow calculations, obtain the voltage amplitude and phase angle of each node, and obtain the active power and network loss of each branch;

[0226] Establishing a carbon emission model module 320 to determine the carbon emissions during the equipment production stage, material transportation stage, engineering construction stage, power plant operation and maintenance stage, and decommissioning stage. Based on the emissions at each stage, a full life cycle carbon emission model for the power supply side is established.

[0227] A carbon flow model module 330 is established to establish a power system carbon flow model that takes into account the full life cycle carbon emissions of the power supply side based on the voltage amplitude and phase angle of each node, the active power and network loss of each branch, and the full life cycle carbon emission model of the power supply side.

[0228] Optionally, a carbon emission model module is established, including:

[0229] The carbon emissions during the equipment production phase are determined as:

[0230]

[0231] Among them, C P Refers to the CO2 emissions generated by the generator set equipment during the production stage, N1 is the total number of types of materials used in the production of related equipment, g piis the total weight of the i-th material used to produce the relevant equipment; Q pi The carbon emission coefficient of the i-th material used in the production of relevant equipment;

[0232] The carbon emissions during the material transportation phase are determined as:

[0233]

[0234] Among them, C T is the CO2 emission during the material transportation process of the generator set; N2 is the total number of types of materials used in the transportation process; g ti is the total weight of the i-th material transported during the transportation phase; Q ti D is the carbon emission coefficient when transporting the i-th material; i is the distance when transporting the i-th material;

[0235] The carbon emissions during the construction phase are determined as follows:

[0236]

[0237] Among them, C C is the CO2 emissions generated by relevant production activities during the construction phase, N3 is the total number of types of materials used in the construction process; g ci is the total weight of the i-th material used in the construction phase; Q ci is the carbon emission coefficient of the i-th material used in the construction phase, C L is carbon sink loss emission; C C，M CO2 emissions from the production of building materials during the construction phase;

[0238] The carbon sink loss C L for:

[0239]

[0240] Among them, N4 is the number of vegetation types occupied during the construction or operation phase; S li is the area of vegetation occupied or damaged in the i-th place; f li is the carbon sink loss and carbon emission factor of the i-th vegetation, T Li is the time of occupation or destruction of the i-th vegetation;

[0241] The carbon emissions during the power plant operation and maintenance phase are determined as:

[0242]

[0243] Among them, carbon emissions in the operation and maintenance stage come from resource consumption and replacement of failed materials. O,P C is the carbon emission during the production process of failed materials in the operation and maintenance stage; O,Tis the carbon emission during the transportation of failed materials during the operation and maintenance phase; N5 represents the total number of consumables during the operation and maintenance phase of the power station, g oi Indicates the mass of the i-th consumable, Q oi represents the carbon emission factor of the i-th consumable;

[0244] The carbon emissions during the decommissioning phase are determined as:

[0245]

[0246] Among them, the carbon emissions in the decommissioning stage of the project come from the waste treatment process and the waste recycling process. N6 represents the total amount of waste such as concrete and resin involved in the wind farm treatment process. N7 represents the total amount of recycled resources such as metal materials in the decommissioning stage. di represents the quality of the i-th resource in the waste treatment process, Q di represents the carbon emission factor of the i-th resource in the waste treatment process, g ri Indicates the quality of the i-th resource in the recycling process, Q ri represents the carbon emission factor of the i-th resource, and ξ represents the recovery coefficient.

[0247] Optionally, a carbon emission model module is established, including:

[0248] The life cycle carbon emissions calculation submodule is used to calculate the life cycle carbon emissions of the power supply side according to the following formula:

[0249] C PP =C P +C T +C C +C O +C R

[0250] Among them, C PP is the total amount of CO2 generated during the entire life cycle of the generator set; C P Refers to the CO2 emissions generated by the generator set equipment during the production stage; C T is the CO2 emission during the material transportation process of the generator set; C C is the CO2 emissions generated by relevant production activities during the construction phase; C O is the CO2 emissions generated by the generator set during the operation and maintenance phase; C R It is the CO2 emissions generated by the power generation unit during the decommissioning stage.

[0251] Optionally, a carbon flow model module is established, including:

[0252] The branch carbon flow determination submodule is used to determine the branch carbon flow F as the cumulative amount of coupled carbon emissions corresponding to the current passing through a branch within a given time;

[0253] The branch carbon flow rate determination submodule is used to determine the branch carbon flow rate R. The branch carbon flow rate is defined as the accumulation of carbon flow per unit time and is represented by the symbol R. The definition of the branch / node carbon flow rate is:

[0254] R=dF / dt

[0255] The branch carbon flow density determination submodule is used to determine the branch carbon flow density ρ. The ratio of the carbon flow rate R to the active power flow P of any branch in the power system is defined as the branch carbon flow density, which is represented by the symbol ρ and is defined as follows:

[0256] ρ=R / P

[0257] Determine the node carbon potential submodule, used to determine the node carbon potential e n , the relationship between the carbon emission flow and active power flow at the nodes in the system will be described by the concept of node carbon potential. The carbon potential of node n is defined as follows:

[0258]

[0259] N+ is the set of all branches connected to node n with current flowing into node n, i is the branch subscript, P i It represents the active power flowing from branch i to node n. The node carbon potential has the same dimension as the branch carbon flow density and is numerically equal to the carbon flow density ρ of all branches flowing into node n. i Active current P i is the weighted average of the weights;

[0260] According to the energy scheduling principle, the carbon flow density of all branches flowing out of the node is ρ p The node carbon potential e of this node n equal:

[0261] ρ P =e n

[0262] Optionally, establishing a carbon flow model module further includes:

[0263] Determine the carbon potential of the generator set throughout its life cycle submodule, which is used to determine the carbon potential of the generator set throughout its life cycle PP for:

[0264] e PP =C PP / P total

[0265] Among them, C PP is the total carbon emissions of the unit throughout its life cycle, P total The amount of electricity it generates during its life cycle;

[0266] Determine the carbon flow rate R corresponding to the network lossP,Loss , the carbon emissions generated by the transmission loss of the power grid are allocated to the network, and the carbon flow rate R allocated to line l P,Loss Expressed as:

[0267] R P,Loss =ρ P P Loss

[0268] in P P,Loss represents the power loss of line l;

[0269] Considering the network loss, the carbon flow rate of each branch is expressed as:

[0270] R P =ρ P P+ρ P P Loss

[0271] P is the branch active power;

[0272] Taking into account network losses and carbon emissions over the entire life cycle of the unit, the carbon potential of each node is determined by the active power G injected by the branches and generators connected to the node. Following the principle of energy merging, the calculation formula for the node carbon potential is:

[0273]

[0274] φ is the set of generators connected to the node, and Г is the set of branches connected to the node.

[0275] A carbon flow calculation system 300 that considers the full life cycle carbon emissions of the power supply side in an embodiment of the present invention corresponds to a carbon flow calculation method 100 that considers the full life cycle carbon emissions of the power supply side in another embodiment of the present invention, and will not be repeated here.

[0276] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiment of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal translation scripting language JavaScript, etc.

[0277] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0278] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0279] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0280] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0281] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A carbon flow calculation method considering the carbon emissions of the power supply side throughout its life cycle, characterized in that: include: Perform integrity and format checks on power data, obtain power system operating parameters, perform power system flow calculations, obtain the voltage amplitude and phase angle of each node, and obtain the active power and network loss of each branch; Determine the carbon emissions during the equipment production, material transportation, construction, power plant operation and maintenance, and decommissioning stages. Build a full lifecycle carbon emissions model for the power supply based on the emissions at each stage. Based on the voltage amplitude and phase angle of each node, the active power and network loss of each branch and the full life cycle carbon emission model of the power supply side, a power system carbon flow model considering the full life cycle carbon emissions of the power supply side is established.

2. The method according to claim 1, characterized in that Determine the carbon emissions during the equipment production, material transportation, construction, power plant operation and maintenance, and decommissioning phases, including: The carbon emissions during the equipment production phase are determined as: Among them, C P Refers to the CO2 emissions generated by the generator set equipment during the production stage, N1 is the total number of types of materials used in the production of related equipment, g pi is the total weight of the i-th material used to produce the relevant equipment; Q pi The carbon emission coefficient of the i-th material used in the production of relevant equipment; The carbon emissions during the material transportation phase are determined as: Among them, C T is the CO2 emission during the material transportation process of the generator set; N2 is the total number of types of materials used in the transportation process; g ti is the total weight of the i-th material transported during the transportation phase; Q ti D is the carbon emission coefficient when transporting the i-th material; i is the distance when transporting the i-th material; The carbon emissions during the construction phase are determined as follows: Among them, C C is the CO2 emissions generated by relevant production activities during the construction phase, N3 is the total number of types of materials used in the construction process; g ci is the total weight of the i-th material used in the construction phase; Q ci is the carbon emission coefficient of the i-th material used in the construction phase, C L is carbon sink loss emission; C C，M CO2 emissions from the production of building materials during the construction phase; The carbon sink loss C L for: Among them, N4 is the number of vegetation types occupied during the construction or operation phase; S li is the area of vegetation occupied or damaged in the i-th place; f li is the carbon sink loss and carbon emission factor of the i-th vegetation, T Li is the time of occupation or destruction of the i-th vegetation; The carbon emissions during the power plant operation and maintenance phase are determined as: Among them, carbon emissions in the operation and maintenance stage come from resource consumption and replacement of failed materials. O,P C is the carbon emission during the production process of failed materials in the operation and maintenance stage; O,T is the carbon emission during the transportation of failed materials during the operation and maintenance phase; N5 represents the total number of consumables during the operation and maintenance phase of the power station, g oi Indicates the mass of the i-th consumable, Q oi represents the carbon emission factor of the i-th consumable; The carbon emissions during the decommissioning phase are determined as: Among them, the carbon emissions in the decommissioning stage of the project come from the waste treatment process and the waste recycling process. N6 represents the total amount of waste such as concrete and resin involved in the wind farm treatment process. N7 represents the total amount of recycled resources such as metal materials in the decommissioning stage. di represents the quality of the i-th resource in the waste treatment process, Q di represents the carbon emission factor of the i-th resource in the waste treatment process, g ri Indicates the quality of the i-th resource in the recycling process, Q ri represents the carbon emission factor of the i-th resource, and ξ represents the recovery coefficient.

3. The method according to claim 2, characterized in that Based on the emissions at each stage, a full life cycle carbon emission model for the power supply side is established, including: Calculate the full life cycle carbon emissions of the power supply side according to the following formula: C PP =C P +C T +C C +C O +C R Among them, C PP is the total amount of CO2 generated during the entire life cycle of the generator set; C P Refers to the CO2 emissions generated by the generator set equipment during the production stage; C T is the CO2 emission during the material transportation process of the generator set; C C is the CO2 emissions generated by relevant production activities during the construction phase; C O is the CO2 emissions generated by the generator set during the operation and maintenance phase; C R It is the CO2 emissions generated by the power generation unit during the decommissioning stage.

4. The method according to claim 3, characterized in that Based on the voltage amplitude and phase angle of each node, the active power and network loss of each branch, and the power supply side's full life cycle carbon emission model, a power system carbon flow model that considers the power supply side's full life cycle carbon emissions is established, including: Determine the branch carbon flow F as the cumulative amount of coupled carbon emissions corresponding to the flow through a branch within a given time; Determine the branch carbon flow rate R. The branch carbon flow rate is defined as the accumulation of carbon flow per unit time and is represented by the symbol R. The definition of the branch / node carbon flow rate is: R=dF / dt Determine the branch carbon flow density ρ, and define the ratio of the carbon flow rate R of any branch of the power system to the active power flow P as the branch carbon flow density, represented by the symbol ρ, and the definition formula is: ρ=R / P Determine the node carbon potential e n , the relationship between the carbon emission flow and active power flow at the nodes in the system will be described by the concept of node carbon potential. The carbon potential of node n is defined as follows: N+ is the set of all branches connected to node n with current flowing into node n, i is the branch subscript, P i It represents the active power flowing from branch i to node n. The node carbon potential has the same dimension as the branch carbon flow density and is numerically equal to the carbon flow density ρ of all branches flowing into node n. i Active current P i is the weighted average of the weights; According to the energy scheduling principle, the carbon flow density of all branches flowing out of the node is ρ p The node carbon potential e of this node n equal: r P =e n。 5. The method according to claim 4, characterized in that Based on the voltage amplitude and phase angle of each node, the active power and network loss of each branch, and the power supply side's full life cycle carbon emission model, a power system carbon flow model that considers the power supply side's full life cycle carbon emissions is established, which also includes: Determine the carbon potential of a generator set over its entire life cycle PP for: e PP =C PP / P total Among them, C PP is the total carbon emissions of the unit throughout its life cycle, P total The amount of electricity it generates during its life cycle; Determine the carbon flow rate R corresponding to the network loss P,Loss , the carbon emissions generated by the transmission loss of the power grid are allocated to the network, and the carbon flow rate R allocated to line l P,Loss Expressed as: R P,Loss =ρ P P Loss Among them, P P,Loss represents the power loss of line l; Considering the network loss, the carbon flow rate of each branch is expressed as: R P =ρ P P+r P P Loss P is the branch active power; Taking into account network losses and carbon emissions over the entire life cycle of the unit, the carbon potential of each node is determined by the active power G injected by the branches and generators connected to the node. Following the principle of energy merging, the calculation formula for the node carbon potential is: φ is the set of generators connected to the node, and Г is the set of branches connected to the node.

6. A carbon flow calculation system that considers the carbon emissions of the power supply side throughout its life cycle, characterized in that: include: The power flow calculation module is used to check the integrity and format of power data, obtain power system operating parameters, perform power system power flow calculations, obtain the voltage amplitude and phase angle of each node, and obtain the active power and network loss of each branch; Establish a carbon emission model module to determine the carbon emissions during the equipment production stage, material transportation stage, engineering construction stage, power plant operation and maintenance stage, and decommissioning stage. Based on the emissions at each stage, establish a full life cycle carbon emission model for the power supply side. A carbon flow model module is established to establish a power system carbon flow model that takes into account the full life cycle carbon emissions of the power supply side based on the voltage amplitude and phase angle of each node, the active power and network loss of each branch, and the full life cycle carbon emission model of the power supply side.

7. The system according to claim 6, characterized in that Establish a carbon emission model module, including: The carbon emissions during the equipment production phase are determined as: Among them, C P Refers to the CO2 emissions generated by the generator set equipment during the production stage, N1 is the total number of types of materials used in the production of related equipment, g pi is the total weight of the i-th material used to produce the relevant equipment; Q pi The carbon emission coefficient of the i-th material used in the production of relevant equipment; The carbon emissions during the material transportation phase are determined as: Among them, C T is the CO2 emission during the material transportation process of the generator set; N2 is the total number of types of materials used in the transportation process; g ti is the total weight of the i-th material transported during the transportation phase; Q ti D is the carbon emission coefficient when transporting the i-th material; i is the distance when transporting the i-th material; The carbon emissions during the construction phase are determined as follows: Among them, C C is the CO2 emissions generated by relevant production activities during the construction phase, N3 is the total number of types of materials used in the construction process; g ci is the total weight of the i-th material used in the construction phase; Q ci is the carbon emission coefficient of the i-th material used in the construction phase, C L is carbon sink loss emission; C C，M CO2 emissions from the production of building materials during the construction phase; The carbon sink loss C L for: Among them, N4 is the number of vegetation types occupied during the construction or operation phase; S li is the area of vegetation occupied or damaged in the i-th place; f li is the carbon sink loss and carbon emission factor of the i-th vegetation, T Li is the time of occupation or destruction of the i-th vegetation; The carbon emissions during the power plant operation and maintenance phase are determined as: Among them, carbon emissions in the operation and maintenance stage come from resource consumption and replacement of failed materials. O,P C is the carbon emission during the production process of failed materials in the operation and maintenance stage; O,T is the carbon emission during the transportation of failed materials during the operation and maintenance phase; N5 represents the total number of consumables during the operation and maintenance phase of the power station, g oi Indicates the mass of the i-th consumable, Q oi represents the carbon emission factor of the i-th consumable; The carbon emissions during the decommissioning phase are determined as: Among them, the carbon emissions in the decommissioning stage of the project come from the waste treatment process and the waste recycling process. N6 represents the total amount of waste such as concrete and resin involved in the wind farm treatment process. N7 represents the total amount of recycled resources such as metal materials in the decommissioning stage. di represents the quality of the i-th resource in the waste treatment process, Q di represents the carbon emission factor of the i-th resource in the waste treatment process, g ri Indicates the quality of the i-th resource in the recycling process, Q ri represents the carbon emission factor of the i-th resource, and ξ represents the recovery coefficient.

8. The system according to claim 7, characterized in that Establish a carbon emission model module, including: The life cycle carbon emissions calculation submodule is used to calculate the life cycle carbon emissions of the power supply side according to the following formula: C PP =C P +C T +C C +C O +C R Among them, C PP is the total amount of CO2 generated during the entire life cycle of the generator set; C P Refers to the CO2 emissions generated by the generator set equipment during the production stage; C T is the CO2 emission during the material transportation process of the generator set; C C is the CO2 emissions generated by relevant production activities during the construction phase; C O is the CO2 emissions generated by the generator set during the operation and maintenance phase; C R It is the CO2 emissions generated by the power generation unit during the decommissioning stage.

9. The system according to claim 8, characterized in that Establish a carbon flow model module, including: The branch carbon flow determination submodule is used to determine the branch carbon flow F as the cumulative amount of coupled carbon emissions corresponding to the current passing through a branch within a given time; The branch carbon flow rate determination submodule is used to determine the branch carbon flow rate R. The branch carbon flow rate is defined as the accumulation of carbon flow per unit time and is represented by the symbol R. The definition of the branch / node carbon flow rate is: R=dF / dt The branch carbon flow density determination submodule is used to determine the branch carbon flow density ρ. The ratio of the carbon flow rate R to the active power flow P of any branch in the power system is defined as the branch carbon flow density, which is represented by the symbol ρ and is defined as follows: ρ=R / P Determine the node carbon potential submodule, used to determine the node carbon potential e n , the relationship between the carbon emission flow and active power flow at the nodes in the system will be described by the concept of node carbon potential. The carbon potential of node n is defined as follows: N+ is the set of all branches connected to node n with current flowing into node n, i is the branch subscript, P i It represents the active power flowing from branch i to node n. The node carbon potential has the same dimension as the branch carbon flow density and is numerically equal to the carbon flow density ρ of all branches flowing into node n. i Active current P i is the weighted average of the weights; According to the energy scheduling principle, the carbon flow density of all branches flowing out of the node is ρ p The node carbon potential e of this node n equal: r P =e n。 10. The system according to claim 9, characterized in that The carbon flow modeling module also includes: Determine the carbon potential of the generator set throughout its life cycle submodule, which is used to determine the carbon potential of the generator set throughout its life cycle PP for: e PP =C PP / P total Among them, C PP is the total carbon emissions of the unit throughout its life cycle, P total The amount of electricity it generates during its life cycle; Determine the carbon flow rate R corresponding to the network loss P,Loss , the carbon emissions generated by the transmission loss of the power grid are allocated to the network, and the carbon flow rate R allocated to line l P,Loss Expressed as: R P,Loss =ρ P P Loss Among them, P P,Loss represents the power loss of line l; Considering the network loss, the carbon flow rate of each branch is expressed as: R P =ρ P P+r P P Loss P is the branch active power; Taking into account network losses and carbon emissions over the entire life cycle of the unit, the carbon potential of each node is determined by the active power G injected by the branches and generators connected to the node. Following the principle of energy merging, the calculation formula for the node carbon potential is: φ is the set of generators connected to the node, and Г is the set of branches connected to the node.

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