A method and device for calculating carbon emissions from electric traction on high-speed railways

Abstract

The present invention relates to the field of carbon emission accounting technology, specifically providing a method and apparatus for calculating carbon emissions from electric traction on high-speed railways. The method comprises: determining the carbon emission factor of electricity generated by electric traction stations on a high-speed railway section; and determining the carbon emissions of electric traction on that section of the high-speed railway based on the carbon emission factor of electricity generated by electric traction stations on that section of the high-speed railway section. The technical solution provided by the present invention can calculate carbon emissions from electricity generated during high-speed railway operations by region, section, and time.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission accounting, and in particular to a method and device for calculating carbon emissions of electric traction on a high-speed railway. Background Art

[0002] With the improvement of incentives and constraints for pollution reduction and carbon reduction, the formation of a green production and lifestyle has been accelerated.

[0003] Transportation emissions account for approximately 10% of national carbon emissions. To promote green travel and energy conservation and carbon reduction, the development of public transportation should be encouraged. High-speed rail, due to its large capacity and use of electricity as a power source, does not directly generate carbon emissions and is therefore considered a clean mode of transportation. However, high-speed rail electricity consumption does generate indirect carbon emissions. Accounting for these emissions can assist with overall planning and help residents cultivate green travel habits. High-speed rail's primary electricity consumption during operation comes from locomotive traction. High-speed rail is powered by electric traction stations connected to the local power grid. Accounting for high-speed rail's carbon emissions involves the power system, and the power supply structure determines the indirect carbon emissions from high-speed rail electricity use. Accounting for high-speed rail's carbon emissions can assist with power system planning and clean energy consumption.

[0004] Currently, there are still issues with the accuracy of calculating high-speed rail traction carbon emissions. Current calculations of high-speed rail traction power rely primarily on regional carbon emission factors for power grids. These factors have coarse regional and temporal resolutions, leading to inaccurate calculations for high-speed rail lines that cross power grid regions. This makes it impossible to calculate carbon emissions for short-distance routes, hindering planning. Calculations of train-level carbon emissions are also insufficiently precise, making it difficult to guide users toward low-carbon travel. Summary of the Invention

[0005] In order to overcome the above-mentioned defects, the present invention proposes a method and device for calculating carbon emissions from electric traction of high-speed railways.

[0006] In a first aspect, a method for calculating carbon emissions from electric traction of a high-speed railway is provided. The method for calculating carbon emissions from electric traction of a high-speed railway comprises:

[0007] Determine the carbon emission factors for electricity from electric traction stations on high-speed railway sections;

[0008] The electric traction carbon emissions of the high-speed railway section are determined based on the electric carbon emission factor of the electric railway traction station of the high-speed railway section.

[0009] Preferably, when there is no power input to the electric railway traction station, the electricity carbon emission factor of the electric railway traction station is determined according to the following formula:

[0010]

[0011] In the above formula, EF is the carbon emission factor of electricity in the electric railway traction station, Ei is the power generation corresponding to the i-th type unit, EF i is the carbon emission factor of electricity corresponding to the i-th type unit, E in The amount of electricity input to the area belonging to the electric railway traction station by the area that inputs electricity to the area belonging to the electric railway traction station, EF in is the electricity carbon emission factor of the in-th region that inputs electricity to the area where the electric railway traction station belongs, n is the number of unit types, and m is the total number of regions that input electricity to the area where the electric railway traction station belongs.

[0012] Preferably, when the electric railway traction station has power input, the electric railway traction station and the power plant station with access to the electric railway traction station are added to the calculation set, and the carbon flow equation corresponding to the power plant station in the calculation set is constructed;

[0013] Determining the electricity carbon emission factor of each plant in the calculation set based on the carbon flow equation;

[0014] The electric power carbon emission factor corresponding to the electric railway traction station is obtained from the electric power carbon emission factors of each plant station in the calculation set.

[0015] Furthermore, the carbon flow equation corresponding to the plant in the calculation set is as follows:

[0016] M t =E t -P t +diag(P t ξ)

[0017] In the above formula, M t To calculate the carbon flow equation corresponding to the plant in the set, E t To calculate the power generation matrix of each plant in the set, P t To calculate the power flow relationship matrix of each power station in the set, ξ is a vector of all 1s, and diag is a diagonal matrix function.

[0018] Furthermore, the power generation matrix of each plant in the calculation set is as follows:

[0019]

[0020] In the above formula, E N,t is the power generation of the Nth plant in the calculation set, N is the total number of plants in the calculation set, E N,t =∑ n E N,t,n , E N,t,n To calculate the power generation of the n-th type of unit in the N-th plant in the set.

[0021] Furthermore, the power flow relationship matrix of each plant in the calculation set is as follows:

[0022]

[0023] In the above formula, let j∈[1,N],P t,j,j To calculate the input power from plant j to node j in the set.

[0024] Furthermore, the electricity carbon emission factors of each plant in the calculation set are as follows:

[0025]

[0026] In the above formula, λ t To calculate the carbon emission factor of each power plant in the set, C t To calculate the injected carbon emission matrix of each plant in the set.

[0027] Furthermore, the injected carbon emission matrix of each plant in the calculation set is as follows:

[0028]

[0029] In the above formula, ε n is the carbon emission factor of power generation of the nth type of unit.

[0030] Furthermore, the carbon emissions from electric traction on the high-speed railway section are as follows:

[0031]

[0032] In the above formula, CL is the carbon emission of electric traction in the high-speed railway section, u j is the electricity carbon emission factor of the electric railway traction station j on the high-speed railway section, E is the electricity consumption of the high-speed railway section, and S is the total number of electric railway traction stations on the high-speed railway section.

[0033] In a second aspect, a device for calculating carbon emissions from electric traction of a high-speed railway is provided, the device comprising:

[0034] A first determination module is used to determine the electricity carbon emission factor of the electric railway traction station of the high-speed railway section;

[0035] The second determination module is used to determine the electric traction carbon emissions of the high-speed railway section based on the electric carbon emission factor of the electric railway traction station of the high-speed railway section.

[0036] The above one or more technical solutions of the present invention have at least one or more of the following beneficial effects:

[0037] This invention provides a method and device for calculating carbon emissions from electric traction on high-speed railways. The method comprises: determining the carbon emission factor of electric traction stations on a high-speed railway section; and determining the carbon emissions of electric traction on that section based on the carbon emission factor of the electric traction stations on that section. This technical solution accurately calculates carbon emissions for high-speed railway lines, individual train trips, and the average per-trip carbon emissions, providing a reference for planning and green travel initiatives for residents. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a flow chart of the main steps of a method for calculating carbon emissions from electric traction on a high-speed railway according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] As disclosed in the background technology, with the improvement of incentives and constraints for pollution reduction and carbon reduction, the formation of a green production and lifestyle has been accelerated.

[0042] Transportation emissions account for approximately 10% of national carbon emissions. To promote green travel and energy conservation and carbon reduction, the development of public transportation should be encouraged. High-speed rail, due to its large capacity and use of electricity as a power source, does not directly generate carbon emissions and is therefore considered a clean mode of transportation. However, high-speed rail electricity consumption does generate indirect carbon emissions. Accounting for these emissions can assist with overall planning and help residents cultivate green travel habits. High-speed rail's primary electricity consumption during operation comes from locomotive traction. High-speed rail is powered by electric traction stations connected to the local power grid. Accounting for high-speed rail's carbon emissions involves the power system, and the power supply structure determines the indirect carbon emissions from high-speed rail electricity use. Accounting for high-speed rail's carbon emissions can assist with power system planning and clean energy consumption.

[0043] Currently, there are still issues with the accuracy of calculating high-speed rail traction carbon emissions. Current calculations of high-speed rail traction power rely primarily on regional carbon emission factors for power grids. These factors have coarse regional and temporal resolutions, leading to inaccurate calculations for high-speed rail lines that cross power grid regions. This makes it impossible to calculate carbon emissions for short-distance routes, hindering planning. Calculations of train-level carbon emissions are also insufficiently precise, making it difficult to guide users toward low-carbon travel.

[0044] To address these issues, the present invention provides a method and device for calculating carbon emissions from electric traction on high-speed railways. The method comprises: determining the carbon emission factor for electric traction stations on a high-speed railway section; and determining the carbon emissions for electric traction on that section based on the carbon emission factor for electric traction stations on that section. This technical solution accurately calculates the carbon emissions of high-speed railway lines, individual trains, and the average per-ride carbon emissions, providing a reference for planning and green travel initiatives for residents.

[0045] The above scheme is described in detail below.

[0046] Example 1

[0047] See attached Figure 1 , Figure 1 This is a flow chart of the main steps of a method for calculating carbon emissions from electric traction of a high-speed railway according to an embodiment of the present invention. Figure 1 As shown, the method for calculating carbon emissions of electric traction of high-speed railways in an embodiment of the present invention mainly includes the following steps:

[0048] Step S101: determining the electricity carbon emission factor of the electric railway traction station of the high-speed railway section;

[0049] Step S102: Determine the electric traction carbon emissions of the high-speed railway section based on the electric carbon emission factor of the electric railway traction station of the high-speed railway section.

[0050] In this embodiment, when there is no power input to the electric railway traction station, the electricity carbon emission factor of the electric railway traction station is determined by the following formula:

[0051]

[0052] In the above formula, EF is the carbon emission factor of electricity in the electric railway traction station, E i is the power generation corresponding to the i-th type unit, EF i is the carbon emission factor of electricity corresponding to the i-th type unit, E in The amount of electricity input to the area belonging to the electric railway traction station by the area that inputs electricity to the area belonging to the electric railway traction station, EF in is the electricity carbon emission factor of the in-th region that inputs electricity to the area where the electric railway traction station belongs, n is the number of unit types, and m is the total number of regions that input electricity to the area where the electric railway traction station belongs.

[0053] In this embodiment, when the electric railway traction station has power input, the electric railway traction station and the power plant station with access to the electric railway traction station are added to the calculation set, and the carbon flow equation corresponding to the power plant station in the calculation set is constructed;

[0054] Determining the electricity carbon emission factor of each plant in the calculation set based on the carbon flow equation;

[0055] The electric power carbon emission factor corresponding to the electric railway traction station is obtained from the electric power carbon emission factors of each plant station in the calculation set.

[0056] In one embodiment, the carbon flow equation corresponding to the plant in the calculation set is as follows:

[0057] M t =E t -P t +diag(P t ξ)

[0058] In the above formula, M t To calculate the carbon flow equation corresponding to the plant in the set, E t To calculate the power generation matrix of each plant in the set, P t To calculate the power flow relationship matrix of each power station in the set, ξ is a vector of all 1s, and diag is a diagonal matrix function.

[0059] In one embodiment, the power generation matrix of each plant in the calculation set is as follows:

[0060]

[0061] In the above formula, E N,t is the power generation of the Nth plant in the calculation set, N is the total number of plants in the calculation set, E N,t =∑ n E N,t,n , E N,t,n To calculate the power generation of the n-th type of unit in the N-th plant in the set.

[0062] In one embodiment, the power flow relationship matrix of each plant in the calculation set is as follows:

[0063]

[0064] In the above formula, let j∈[1,N],P t,j,j To calculate the input power from plant j to node j in the set.

[0065] In one embodiment, the electricity carbon emission factor of each plant in the calculation set is as follows:

[0066]

[0067] In the above formula, λ t To calculate the carbon emission factor of each power plant in the set, C t To calculate the injected carbon emission matrix of each plant in the set.

[0068] In one embodiment, the injected carbon emission matrix of each plant in the calculation set is as follows:

[0069]

[0070] In the above formula, ε n is the carbon emission factor of power generation of the nth type of unit.

[0071] In this embodiment, the electric railway traction carbon emissions during the entire railway operation can be obtained in the following manner.

[0072] 1) Determine the location and power supply of the electric traction station on the high-speed railway section, clarify the power and electricity input by the electric traction station, as well as the starting position, length, and ending position of the section powered by the electric traction station. The starting position and ending position are the same as the ending position and starting position of the previous and next electric traction stations.

[0073] 2) Calculate the carbon emissions of each high-speed railway section and the carbon emissions per unit time for the entire section. The carbon emission factor for the section powered by the electric railway traction station is the same as the carbon emission factor for the electric railway traction station. The carbon emissions of a section are equal to the carbon emission factor multiplied by the high-speed railway electricity consumption. The carbon emissions of the entire railway are equal to the sum of the carbon emissions of each section. The carbon emission factor per unit time for the entire railway is equal to the carbon emissions per unit time of each section divided by the total high-speed railway electricity consumption of each section. For a period of time, the carbon emissions of the entire section are equal to the sum of the carbon emissions of each section during that period.

[0074] In one embodiment, the carbon emissions of electric traction in the high-speed railway section are as follows:

[0075]

[0076] In the above formula, CL is the carbon emission of electric traction in the high-speed railway section, u j is the electricity carbon emission factor of the electric railway traction station j on the high-speed railway section, E is the electricity consumption of the high-speed railway section, and S is the total number of electric railway traction stations on the high-speed railway section.

[0077] Example 2

[0078] Based on the same inventive concept, the present invention further provides a device for calculating carbon emissions from electric traction of a high-speed railway, the device comprising:

[0079] A first determination module is used to determine the electricity carbon emission factor of the electric railway traction station of the high-speed railway section;

[0080] The second determination module is used to determine the electric traction carbon emissions of the high-speed railway section based on the electric carbon emission factor of the electric railway traction station of the high-speed railway section.

[0081] Preferably, when there is no power input to the electric railway traction station, the electricity carbon emission factor of the electric railway traction station is determined according to the following formula:

[0082]

[0083] In the above formula, EF is the carbon emission factor of electricity in the electric railway traction station, E i is the power generation corresponding to the i-th type unit, EF i is the carbon emission factor of electricity corresponding to the i-th type unit, E in The amount of electricity input to the area belonging to the electric railway traction station by the area that inputs electricity to the area belonging to the electric railway traction station, EF in is the electricity carbon emission factor of the in-th region that inputs electricity to the area where the electric railway traction station belongs, n is the number of unit types, and m is the total number of regions that input electricity to the area where the electric railway traction station belongs.

[0084] Preferably, when the electric railway traction station has power input, the electric railway traction station and the power plant station with access to the electric railway traction station are added to the calculation set, and the carbon flow equation corresponding to the power plant station in the calculation set is constructed;

[0085] Determining the electricity carbon emission factor of each plant in the calculation set based on the carbon flow equation;

[0086] The electric power carbon emission factor corresponding to the electric railway traction station is obtained from the electric power carbon emission factors of each plant station in the calculation set.

[0087] Furthermore, the carbon flow equation corresponding to the plant in the calculation set is as follows:

[0088] M t =E t -P t +diag(P t ξ)

[0089] In the above formula, M t To calculate the carbon flow equation corresponding to the plant in the set, E t To calculate the power generation matrix of each plant in the set, P t To calculate the power flow relationship matrix of each power station in the set, ξ is a vector of all 1s, and diag is a diagonal matrix function.

[0090] Furthermore, the power generation matrix of each plant in the calculation set is as follows:

[0091]

[0092] In the above formula, E N,t is the power generation of the Nth plant in the calculation set, N is the total number of plants in the calculation set, E N,t =∑n E N,t,n , E N,t,n To calculate the power generation of the n-th type of unit in the N-th plant in the set.

[0093] Furthermore, the power flow relationship matrix of each plant in the calculation set is as follows:

[0094]

[0095] In the above formula, let j∈[1,N],P t,j,j To calculate the input power from plant j to node j in the set.

[0096] Furthermore, the electricity carbon emission factors of each plant in the calculation set are as follows:

[0097]

[0098] In the above formula, λ t To calculate the carbon emission factor of each power plant in the set, C t To calculate the injected carbon emission matrix of each plant in the set.

[0099] Furthermore, the injected carbon emission matrix of each plant in the calculation set is as follows:

[0100]

[0101] In the above formula, ε n is the carbon emission factor of power generation of the nth type of unit.

[0102] Furthermore, the carbon emissions from electric traction on the high-speed railway section are as follows:

[0103]

[0104] In the above formula, CL is the carbon emission of electric traction in the high-speed railway section, u j is the electricity carbon emission factor of the electric railway traction station j on the high-speed railway section, E is the electricity consumption of the high-speed railway section, and S is the total number of electric railway traction stations on the high-speed railway section.

[0105] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0106] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, 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 processes in the flowcharts and / or block diagrams. 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.

[0107] 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.

[0108] 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.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of protection of the claims of the present invention.

Claims

1. A method for calculating carbon emissions from electric traction on high-speed railways, characterized in that: The method comprises: Determine the carbon emission factors for electricity from electric traction stations on high-speed railway sections; Determining electric traction carbon emissions for the high-speed railway section based on an electric carbon emission factor for an electric railway traction station for the high-speed railway section; When there is no power input to the electric railway traction station, the electricity carbon emission factor of the electric railway traction station is determined as follows: In the above formula, EF is the carbon emission factor of electricity in the electric railway traction station, E i is the power generation corresponding to the i-th type unit, EF i is the carbon emission factor of electricity corresponding to the i-th type unit, E in The amount of electricity input to the area belonging to the electric railway traction station by the area that inputs electricity to the area belonging to the electric railway traction station, EF in is the electricity carbon emission factor of the in-th region that inputs electricity to the area where the electric railway traction station belongs, n is the number of unit types, and m is the total number of regions that input electricity to the area where the electric railway traction station belongs.

2. The method according to claim 1, wherein When the electric railway traction station has power input, the electric railway traction station and the power plant station with access to the electric railway traction station are added to the calculation set, and the carbon flow equation corresponding to the power plant station in the calculation set is constructed; Determining the electricity carbon emission factor of each plant in the calculation set based on the carbon flow equation; The electric power carbon emission factor corresponding to the electric railway traction station is obtained from the electric power carbon emission factors of each plant station in the calculation set.

3. The method according to claim 2, wherein The carbon flow equation corresponding to the plant in the calculation set is as follows: M t =And t -P t +diag(P t (ξ) In the above formula, M t To calculate the carbon flow equation corresponding to the plant in the set, E t To calculate the power generation matrix of each plant in the set, P t To calculate the power flow relationship matrix of each power station in the set, ξ is a vector of all 1s, and diag is a diagonal matrix function.

4. The method according to claim 3, wherein The power generation matrix of each plant in the calculation set is as follows: In the above formula, E N,t is the power generation of the Nth plant in the calculation set, N is the total number of plants in the calculation set, E N,t =∑ n E N,t,n , E N,t,n To calculate the power generation of the n-th type of unit in the N-th plant in the set.

5. The method according to claim 3, wherein The power flow relationship matrix of each plant in the calculation set is as follows: In the above formula, let j∈[1,N],P t,j,j To calculate the input power from plant j to node j in the set.

6. The method according to claim 4, wherein The electricity carbon emission factors of each plant in the calculation set are as follows: In the above formula, λ t To calculate the carbon emission factor of each power plant in the set, C t To calculate the injected carbon emission matrix of each plant in the set.

7. The method according to claim 6, wherein The injected carbon emission matrix of each plant in the calculation set is as follows: In the above formula, ε n is the carbon emission factor of power generation of the nth type unit.

8. The method according to claim 6, wherein The carbon emissions of electric traction in the high-speed railway section are as follows: In the above formula, CL is the carbon emission of electric traction in the high-speed railway section, u j is the electricity carbon emission factor of the electric railway traction station j on the high-speed railway section, E is the electricity consumption of the high-speed railway section, and S is the total number of electric railway traction stations on the high-speed railway section.

9. A device for calculating carbon emissions from electric traction of a high-speed railway based on the method according to any one of claims 1 to 8, characterized in that: The device comprises: A first determination module is used to determine the electricity carbon emission factor of the electric railway traction station of the high-speed railway section; The second determination module is used to determine the electric traction carbon emissions of the high-speed railway section based on the electric carbon emission factor of the electric railway traction station of the high-speed railway section.

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