A method for calculating regional electricity carbon emissions considering inter-regional power transmission with temporal and spatial resolution

Abstract

The present invention relates to a method for calculating carbon emissions from regional electricity consumption considering inter-regional power transmission with temporal and spatial resolution, including: analyzing the transmission pattern and transmission amount of net power export region A, power import and export region B, and net power import region C; calculating and obtaining the carbon emissions of power generation in net power export region A, power import and export region B, and net power import region C within a time period T; calculating the local power generation carbon emission factors of net power export region A, power import and export region B, and net power import region C within a time period T; based on the power generation carbon emissions of net power export region A and the local power generation carbon emission factors of each region, calculating the carbon emissions of electricity consumption in power import and export region B and net power import region C within a time period T. The present invention can perform accurate and reasonable carbon emission accounting to ensure the realization of carbon reduction targets.

Description

Technical Field

[0001] The present invention relates to a method for calculating carbon emissions from regional electricity consumption that takes into account inter-regional power transmission with temporal and spatial resolution, and relates to the technical field of carbon emissions from electricity. Background Art

[0002] Formulating a scientific and reasonable electricity carbon emission reduction policy is crucial to achieving my country's "dual carbon" goals. Electricity carbon emission accounting is a prerequisite for formulating effective carbon reduction policies and measures.

[0003] With the construction of UHV in my country, regional and inter-provincial electricity dependence has further strengthened, and my country's electricity transmission pattern has gradually shifted from being dominated by regional power grids to being dominated by inter-regional power transmission. The distribution of my country's primary energy resources determines that there are large differences in the power generation structure and power generation emission factors between provincial power grids, and the amount of inter-provincial power trading has further increased. Since the power generation on the power supply side depends on the power consumption demand, inter-provincial power trading allows the power generated on the power generation side to be consumed in multiple provinces, which will lead to the redistribution of carbon emission responsibilities among provinces. Accurate and reasonable carbon emission accounting is the key to ensuring the realization of carbon reduction targets. If the carbon emission accounting results are not accurate enough in terms of temporal and spatial resolution, it will affect the identification of carbon reduction entities, the allocation of carbon reduction responsibilities, and the timely performance of responsible entities.

[0004] Therefore, in the context of inter-provincial electricity trading in my country, an electricity carbon emissions accounting method that considers temporal and spatial resolution is very urgent and necessary. Summary of the invention

[0005] In response to the above problems, the purpose of the present invention is to provide a method, system, equipment and medium for calculating regional electricity carbon emissions that can perform accurate and reasonable carbon emissions accounting to ensure the achievement of carbon reduction targets and take into account the temporal and spatial resolution of cross-regional power transmission.

[0006] In order to achieve the above-mentioned object of the invention, the technical solution provided by the present invention is:

[0007] In a first aspect, the present invention provides a method for calculating regional electricity carbon emissions taking into account inter-regional power transmission with temporal and spatial resolution, which is characterized by comprising:

[0008] Analyze the transmission pattern and transmission volume of net power exporting area A, power importing and exporting area B, and net power importing area C;

[0009] Calculate the carbon emissions of power generation in the net power exporting region A, the power importing region B, and the net power importing region C during the T period;

[0010] Calculate the local power generation carbon emission factors of the net power exporting region A, the power importing region B, and the net power importing region C during the time period T;

[0011] Based on the carbon emissions from power generation in each region and the local carbon emission factors of power generation in each region, the carbon emissions from electricity consumption in region B with power import and export and region C with net power import during time period T are calculated.

[0012] Furthermore, the power transmission pattern and power transmission capacity of net power exporting region A, power importing and exporting region B, and net power importing region C are analyzed, including:

[0013] According to the data of China Energy Statistical Yearbook and Electricity Statistical Yearbook, the power structure of net power exporting region A, power importing and exporting region B, and net power importing region C is analyzed;

[0014] According to the annual report released by the power exchange, the amount of electricity transferred in and out of area A, area B, and area C is analyzed. a→b , G a→c , G b→c , where G a→b G represents the amount of electricity transferred from the net electricity exporting area A to the electricity importing and exporting area B; a→c represents the amount of electricity transferred from the net electricity exporting area A to the net electricity importing area C; G b→c It represents the amount of electricity transferred from the power importing and exporting area B to the net power importing area C.

[0015] Furthermore, it is characterized in that the carbon emissions of power generation in the net power export area A within the time period T are calculated and obtained, including:

[0016] The calculation formula for carbon emissions from power generation in net electricity exporting area A is:

[0017]

[0018] Among them, g ec，i，t represents the power generation of coal-fired generator set i at time t; g en，j，t represents the power generation of gas generator set j at time t; ρ i represents the average unit coal consumption of coal-fired unit i; ρ j represents the unit average coal consumption of gas generator set j; EF c，s represents the average coal carbon emission factor of province s; EF n represents the carbon emission factor of natural gas; n 1 , n 2 represent the number of coal-fired units and gas-fired units in province s respectively;

[0019] Among them, the carbon emissions of electricity generation in power transfer area B are E T，b and the carbon emissions of electricity generation in the net electricity importing region C, E T，c The calculation formula is the same as the calculation formula for carbon emissions from power generation in net electricity exporting region A.

[0020] Furthermore, the calculation formula for the carbon emission factor of power generation in the net power export area A is:

[0021]

[0022] The calculation formula for the carbon emission factor of power generation in power transfer area B is:

[0023]

[0024] The calculation formula for the carbon emission factor of power generation in the net electricity import area C is:

[0025]

[0026] Among them, s is an area / range of a certain place, G T，s∈a is the total power generation of the net power exporting region A, and the carbon emissions of power generation of the power importing and exporting region B G T，s∈b , the carbon emissions of electricity generation in the net electricity importing region C are G T，s∈c .

[0027] Furthermore, the total power generation of area A with net power transfer is calculated as follows:

[0028]

[0029] Among them, G ec，t represents the power generation of the coal-fired unit at time t; G en，t represents the power generation of the gas unit at time t; G el，t represents the power generation of non-fossil energy at time t; g ec，i，t represents the power generation of coal-fired generator set i at time t; g en，j，t represents the power generation of gas generator set j at time t; g el，t，m represents the power generation of non-fossil energy units at time t; n 1 , n 2 , n 3 represent the number of coal-fired units and gas-fired units in province s respectively;

[0030] Among them, the carbon emissions of power generation in power transfer area B are G T，b and the carbon emissions of electricity generation in the net electricity importing region C T，c The calculation formula is the same as the calculation formula for the total power generation of area A with net power export.

[0031] Furthermore, the carbon emissions from electricity consumption in regions B and C during time period T are calculated, including:

[0032] Carbon emissions from electricity consumption in power transfer area B:

[0033]

[0034] Carbon emissions from electricity consumption in net electricity importing region C:

[0035]

[0036] In the formula, G T，a→b G represents the amount of electricity transferred from net electricity exporting area A to power importing and exporting area B during the period T; T，a→c G represents the amount of electricity transferred from net electricity exporting area A to net electricity importing area C during period T; T，b→c G represents the power net imported from power importing and exporting area B to area C during the T period; T，b Indicates the amount of electricity transferred in and out of area B during the T period, G T，c It indicates the net electricity transferred into the local self-generated electricity of region C during the period T.

[0037] In a second aspect, the present invention further provides a regional electricity carbon emission calculation system considering inter-regional power transmission with temporal and spatial resolution, comprising:

[0038] The analysis unit is configured to analyze the power transmission pattern and power transmission amount of the power net exporting area A, the power importing and exporting area B, and the power net importing area C;

[0039] The power generation carbon emission calculation unit is configured to calculate and obtain the power generation carbon emission of the net power export area A, the power import and export area B and the net power import area C within a time period T;

[0040] A power generation carbon emission factor calculation unit is configured to calculate the local power generation carbon emission factors of a net power export region A, a power import and export region B, and a net power import region C within a time period T;

[0041] The electricity carbon emissions calculation unit is configured to calculate the electricity carbon emissions of the power importing and exporting region B and the net power importing region C within the time period T based on the power generation carbon emissions of the net power exporting region A and the local power generation carbon emission factors of each region.

[0042] In a third aspect, the present invention further provides an electronic device, comprising computer program instructions, wherein the program instructions, when executed by a processor, are used to implement the method for calculating regional electricity carbon emissions that takes into account inter-regional power transmission with temporal and spatial resolution.

[0043] In a fourth aspect, the present invention further provides a computer-readable storage medium having computer program instructions stored thereon, wherein the program instructions, when executed by a processor, are used to implement the method for calculating regional electricity carbon emissions that takes into account inter-regional power transmission with temporal and spatial resolution.

[0044] Due to the adoption of the above technical scheme, the present invention has the following characteristics: In order to clarify the problem of inter-regional carbon emission responsibility sharing caused by cross-regional and cross-provincial electricity transactions within a period of time, the present invention proposes a method for calculating the regional electricity carbon emission factor of cross-regional power transmission taking into account the temporal and spatial resolution, which can perform accurate and reasonable carbon emission accounting to ensure the realization of carbon reduction targets, and provide a basis for my country to comprehensively and accurately calculate carbon emissions, that is, to reasonably divide the carbon reduction responsibilities of electricity among regions and identify the responsible entities for carbon emissions, and provide decision-making support for ensuring the realization of provincial carbon reduction targets. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference numerals are used to represent the same components. In the accompanying drawings:

[0046] Figure 1 A schematic diagram of power transmission and reception between power grids according to an embodiment of the present invention;

[0047] Figure 2 The figure is a schematic diagram of the structure of an electronic device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0048] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0049] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0050] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside", "outside", "inner side", "outer side", "below", "above", etc. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures.

[0051] The method, system, device and medium for calculating regional electricity carbon emissions considering inter-regional power transmission with temporal and spatial resolution provided by the present invention include: analyzing the transmission pattern and transmission amount of net power outgoing region A, power incoming and outgoing region B, and net power incoming region C; calculating and obtaining the carbon emissions of power generation in net power outgoing region A, power incoming and outgoing region B, and net power incoming region C within a time period T; calculating the local power generation carbon emission factors of net power outgoing region A, power incoming and outgoing region B, and net power incoming region C within a time period T; based on the carbon emissions of power generation in net power outgoing region A and the local power generation carbon emission factors of each region, calculating the carbon emissions of power consumption in power incoming and outgoing region B and net power incoming region C within a time period T. Therefore, the present invention can perform accurate and reasonable carbon emission accounting to ensure the realization of carbon reduction targets.

[0052] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0053] Embodiment 1: According to the regional electricity self-sufficiency rate and cross-regional electricity trading situation, provinces can be divided into four categories: electricity self-sufficient regions, net electricity exporting regions, electricity importing and exporting regions and net electricity importing regions.

[0054] For electricity self-sufficient regions and net electricity exporting regions, the electricity emission factor is determined by the local power generation structure.

[0055] For regions that transfer electricity in and out and regions with net electricity import, due to electricity trading with other regions, the local electricity carbon emission factor is jointly determined by the local power generation structure and the power generation structure of the traded electricity.

[0056] Table 1 Province classification

[0057] <![CDATA[Class 1 (D 1 )]]> <![CDATA[Class 2 (D 2 )]]> Local self-use Provinces with net electricity imports <![CDATA[Class 3 (D 3 )]]> <![CDATA[Class 4 (D 4 )]]> Provinces with the largest net electricity outflow Power transfer to and from provinces

[0058] The present invention simplifies the cross-regional electricity trading pattern into a triangular model consisting of three types of regions: net electricity outflow, electricity inflow, and net electricity inflow. Figure 1 As shown in Figure 1, the transmission and reception pattern between power grids in any region can be simplified as a superposition of triangular models. The model defines a certain geographical range (region, province, city, factory) as region s, which is represented by circles A, B, and C in the schematic diagram. The transaction volume and transmission direction are represented by vector G. s→k express.

[0059] The method for calculating regional electricity carbon emissions considering inter-regional power transmission with temporal and spatial resolution provided in this embodiment includes the following steps:

[0060] S1. Analyze and calculate the power transmission pattern and power transmission volume between different regions

[0061] like Figure 1 As shown in the figure, according to the data of China Energy Statistical Yearbook and Electricity Statistical Yearbook, the power structure of net power export region A, power import and export region B, and net power import region C is analyzed. According to the annual report released by the power exchange, the power import and export of regions A, B, and C are analyzed. a→b , G a→c , G b→c Indicates that, G a→b Indicates the amount of electricity transmitted from region A to region B; G a→c represents the amount of electricity delivered from region A to region C; G b→c Represents the amount of electricity transmitted from region B to region C.

[0062] S2. Calculate the net electricity output from area A during the T period G. T，a and carbon emissions from electricity generation E T，a

[0063] Specifically, the total power generation of area A with net power transfer is calculated as follows:

[0064]

[0065] The calculation formula for carbon emissions from power generation in net electricity exporting area A is:

[0066]

[0067] Among them, G ec，t represents the power generation of the coal-fired unit at time t; G en，t represents the power generation of the gas unit at time t; G el，t represents the power generation of non-fossil energy at time t; g ec，i，t represents the power generation of coal-fired generator set i at time t; g en，j，t represents the power generation of gas generator set j at time t; g el，t，mrepresents the power generation of non-fossil energy units at time t; ρ i represents the average unit coal consumption of coal-fired unit i; ρ j represents the unit average coal consumption of gas generator set j; EF c，s represents the average coal carbon emission factor of province s; EF n represents the carbon emission factor of natural gas; EF p，T，a represents the local power generation emission factor of the net electricity export area A during the period T; n 1 , n 2 , n 3 They represent the number of coal-fired units and gas-fired units in province s respectively.

[0068] S3. Calculate the carbon emission factor EF of local power generation in each region during the T period p，T，a , E.F. p，T，b , E.F. p，T，c

[0069] The calculation formula for the carbon emission factor of power generation in the net electricity exporting area A is:

[0070]

[0071] Among them, s∈a means that s is an area / range of place a.

[0072] The calculation formula for the carbon emission factor of power generation in power transfer area B is:

[0073]

[0074] The calculation formula for the carbon emission factor of power generation in the net electricity import area C is:

[0075]

[0076] S4. Considering inter-regional electricity trading, calculate the carbon emissions of electricity consumption in regions B and C during time period T

[0077] Carbon emissions from electricity consumption in Region B:

[0078]

[0079] Carbon emissions from electricity consumption in Region C:

[0080]

[0081] In the formula, G T,a→b G represents the amount of electricity transferred from net electricity exporting area A to power importing and exporting area B during the period T; T,a→c G represents the amount of electricity transferred from net electricity exporting area A to net electricity importing area C during period T; T,b→cG represents the power net imported from power importing and exporting area B to area C during the T period; T,b It represents the amount of local self-generated electricity in and out of area B during the T period. The calculation method is the same as G in S1. T,a The calculation formula is not described here. T,c It represents the net amount of electricity transferred into the local self-generated electricity of area C during the period T. The calculation method is the same as G in S1. T,a The calculation formula is not described here.

[0082] In summary, after adopting the carbon emission calculation method of the present invention, the carbon emissions generated by electricity users in the context of cross-provincial electricity trading can be calculated. From the spatial dimension, the power structure used by the electricity trading subject can be distinguished from the local structure. For example, if the proportion of new energy power in the power transferred from other provinces is relatively high, the total local consumption after the power is transferred in will be lower than the carbon emissions directly obtained by using the local power grid carbon emission factor. From the time dimension, it is more accurate to select a relatively accurate and convenient time interval to calculate the carbon emissions generated by the user's electricity consumption. For example, in a power generation structure containing new energy, if the proportion of new energy power generation in time period T is high, the emission factor responded by the user is small, so that the carbon emissions generated by the user and the carbon reduction responsibility assumed are small, and vice versa.

[0083] Embodiment 2: The above-mentioned embodiment 1 provides a method for calculating carbon emissions from regional electricity consumption considering inter-regional power transmission with temporal and spatial resolution. Correspondingly, this embodiment provides a system for calculating carbon emissions from regional electricity consumption considering inter-regional power transmission with temporal and spatial resolution. The system provided in this embodiment can implement the method for calculating carbon emissions from regional electricity consumption considering inter-regional power transmission with temporal and spatial resolution of embodiment 1, and the system can be implemented by software, hardware, or a combination of software and hardware. For the convenience of description, the present embodiment is described separately by functions divided into various units. Of course, the functions of each unit can be implemented in the same or more software and / or hardware during implementation. For example, the system may include integrated or separate functional modules or functional units to perform the corresponding steps in each method of embodiment 1. Since the system of this embodiment is basically similar to the method embodiment, the description process of this embodiment is relatively simple, and the relevant parts can refer to the partial description of embodiment 1. The embodiment of the system for calculating carbon emissions from regional electricity consumption considering inter-regional power transmission with temporal and spatial resolution provided by the present invention is only schematic.

[0084] Specifically, the regional electricity carbon emission calculation system considering inter-regional power transmission with temporal and spatial resolution provided in this embodiment includes:

[0085] The analysis unit is configured to analyze the power transmission pattern and power transmission amount of the power net exporting area A, the power importing and exporting area B, and the power net importing area C;

[0086] The power generation carbon emission calculation unit is configured to calculate and obtain the power generation carbon emission of the net power export area A, the power import and export area B and the net power import area C within a time period T;

[0087] A power generation carbon emission factor calculation unit is configured to calculate the local power generation carbon emission factors of a net power export region A, a power import and export region B, and a net power import region C within a time period T;

[0088] The electricity carbon emissions calculation unit is configured to calculate the electricity carbon emissions of the power importing and exporting region B and the net power importing region C within the time period T based on the power generation carbon emissions of the net power exporting region A and the local power generation carbon emission factors of each region.

[0089] Embodiment 3

[0090] This embodiment provides an electronic device corresponding to the method for calculating regional electricity carbon emissions that takes into account the temporal and spatial resolution of cross-regional power transmission provided in the first embodiment. The electronic device can be an electronic device for a client, such as a mobile phone, a laptop computer, a tablet computer, a desktop computer, etc., to execute the method of the first embodiment.

[0091] like Figure 2 As shown, the electronic device includes a processor, a memory, a communication interface and a bus, and the processor, the memory and the communication interface are connected through the bus to complete mutual communication. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Component (EISA) bus, etc. The memory stores a computer program that can be run on the processor, and when the processor runs the computer program, it executes the method for calculating regional electricity carbon emissions that considers cross-regional power transmission with temporal and spatial resolution provided in the first embodiment. Those skilled in the art can understand that Figure 2 The structure shown in the figure is only a block diagram of a part of the structure related to the scheme of the present application, and does not constitute a limitation on the computing device to which the scheme of the present application is applied. The specific computing device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0092] In some implementations, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art, and the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), optical disk and other media that can store program codes.

[0093] In some other implementations, the processor may be a central processing unit (CPU), a digital signal processor (DSP), or other general-purpose processors of various types, which are not limited herein.

[0094] Embodiment 4: The method for calculating carbon emissions from regional electricity consumption in consideration of inter-regional power transmission with temporal and spatial resolution of the first embodiment can be specifically implemented as a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for executing the method for calculating carbon emissions from regional electricity consumption in consideration of inter-regional power transmission with temporal and spatial resolution of the first embodiment.

[0095] Computer readable storage media can be tangible devices that hold and store instructions used by instruction execution devices. Computer readable storage media can be, for example, but not limited to, electronic storage devices, magnetic storage devices, optical storage devices, electromagnetic storage devices, semiconductor storage devices, or any combination thereof.

[0096] Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. In the description of this specification, the description of the reference terms "one embodiment", "some implementations", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of this specification. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0097] 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 generate 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 flowchart and / or block diagram. 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.

[0098] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate 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 A function specified in one or more boxes.

[0099] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions 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.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for calculating regional electricity carbon emissions considering inter-regional power transmission with temporal and spatial resolution, characterized in that include: Analyze the transmission pattern and transmission volume of net power export region A, power import and export region B, and net power import region C, including: based on the data of China Energy Statistical Yearbook and Power Statistical Yearbook, analyze the power structure of net power export region A, power import and export region B, and net power import region C; based on the annual report released by the power exchange, analyze the import and export volume G of net power export region A, power import and export region B, and net power import region C a→b , G a→c , G b→c , where G a→b It represents the amount of electricity transferred from the net electricity exporting area A to the electricity importing and exporting area B; G a→c represents the amount of electricity transferred from the net electricity exporting area A to the net electricity importing area C; G b→c It represents the amount of electricity transferred from the power import and export area B to the net power import area C; Calculate the carbon emissions of power generation in the net power export region A, the power import and export region B, and the net power import region C during the T period, specifically: Calculate the carbon emissions of power generation in area A, which is the net electricity export area during the T period, including: The calculation formula for carbon emissions from power generation in net electricity exporting area A is: Among them, g ec,i,t represents the power generation of coal-fired generator set i at time t; g en,j,t represents the power generation of gas generator set j at time t; ρ i represents the average unit coal consumption of coal-fired unit i; ρ j represents the unit average coal consumption of gas generator set j; EF c,s represents the average coal carbon emission factor of province s; EF n represents the carbon emission factor of natural gas; n1 and n2 represent the number of coal-fired units and gas-fired units in province s respectively; Among them, the carbon emissions of electricity generation in power transfer area B are E T,b and the carbon emissions of electricity generation in the net electricity importing region C, E T,c The calculation formula is the same as the calculation formula for carbon emissions from power generation in net power exporting region A; Calculate the local power generation carbon emission factors of the net power exporting region A, the power importing region B, and the net power importing region C during the T period, including: The calculation formula for the carbon emission factor of power generation in the net electricity exporting area A is: The calculation formula for the carbon emission factor of power generation in power transfer area B is: The calculation formula for the carbon emission factor of power generation in the net electricity import area C is: Among them, s is an area / range of a certain place, G T,s∈a is the local self-generated electricity of the net power export region A, and the local self-generated electricity of the power import and export region B G T,s∈b , the net electricity transferred into the local self-generated electricity G of area C T,s∈c ; Based on the carbon emissions of power generation in each region and the local carbon emission factors of power generation in each region, the carbon emissions of electricity consumption in the power transfer-in and power transfer-out region B and the net power transfer-in region C during the T period are calculated, including: Carbon emissions from electricity consumption in power transfer area B: Carbon emissions from electricity consumption in net electricity importing region C: In the formula, G T,a→b G represents the amount of electricity delivered from the net power exporting area A to the power importing and exporting area B during the period T; T,a→c represents the amount of electricity transferred from the net power exporting area A to the net power importing area C during the period T; G T,b→c G represents the amount of electricity transferred from power import and export area B to net power import area C during the period T; T,b Indicates the amount of electricity transferred in and out of area B during the T period, G T,c It represents the local self-generated electricity of area C during the T period; The calculation formula for the total power generation of area A with net power transfer is: Among them, G ec,t represents the power generation of the coal-fired unit at time t; G en,t represents the power generation of the gas unit at time t; G el,t represents the power generation of non-fossil energy at time t; g ec,i,t represents the power generation of coal-fired generator set i at time t; g en,j,t represents the power generation of gas generator set j at time t; g el,t,m represents the power generation of non-fossil energy units at time t; n1, n2, n3 represent the number of coal-fired units and gas-fired units in province s respectively; Among them, the local self-generated electricity G of the power transfer area B T,b and the local self-generated electricity G of the net electricity import area C T,c The calculation formula is the same as the calculation formula for the total power generation of area A with net power export.

2. A regional electricity carbon emission calculation system considering inter-regional power transmission with temporal and spatial resolution, characterized by include: The analysis unit is configured to analyze the transmission pattern and transmission amount of the net power export region A, the power import and export region B, and the net power import region C, including: analyzing the power structure of the net power export region A, the power import and export region B, and the net power import region C according to the data of the China Energy Statistical Yearbook and the Power Statistical Yearbook; analyzing the import and export amount G of the net power export region A, the power import and export region B, and the net power import region C according to the annual report released by the power exchange a→b , G a→c , G b→c , where G a→b It represents the amount of electricity transferred from the net electricity exporting area A to the electricity importing and exporting area B; G a→c represents the amount of electricity transferred from the net electricity exporting area A to the net electricity importing area C; G b→c It represents the amount of electricity transferred from the power import and export area B to the net power import area C; The power generation carbon emission calculation unit is configured to calculate and obtain the power generation carbon emission of the net power export area A, the power import and export area B and the net power import area C within the time period T, including: Calculate the carbon emissions of power generation in area A, which is the net electricity export area during the T period, including: The calculation formula for carbon emissions from power generation in net electricity exporting area A is: Among them, g ec,i,t represents the power generation of coal-fired generator set i at time t; g en,j,t represents the power generation of gas generator set j at time t; ρ i represents the average unit coal consumption of coal-fired unit i; ρ j represents the unit average coal consumption of gas generator set j; EF c,s represents the average coal carbon emission factor of province s; EF n represents the carbon emission factor of natural gas; n1 and n2 represent the number of coal-fired units and gas-fired units in province s respectively; Among them, the carbon emissions of electricity generation in power transfer area B are E T,b and the carbon emissions of electricity generation in the net electricity importing region C, E T,c The calculation formula is the same as the calculation formula for carbon emissions from power generation in net power exporting region A; The power generation carbon emission factor calculation unit is configured to calculate the local power generation carbon emission factors of the net power export region A, the power import and export region B and the net power import region C within the time period T, including: The calculation formula for the carbon emission factor of power generation in the net electricity exporting area A is: The calculation formula for the carbon emission factor of power generation in power transfer area B is: The calculation formula for the carbon emission factor of power generation in the net electricity import area C is: Among them, s is an area / range of a certain place, G T,s∈a is the local self-generated electricity of the net power export region A, and the local self-generated electricity of the power import and export region B G T,s∈b , the net electricity transferred into the local self-generated electricity G of area C T,s∈c ; The electricity carbon emissions calculation unit is configured to calculate the electricity carbon emissions of the power import and export region B and the net power import region C within the T time period based on the power generation carbon emissions of the net power export region A and the local power generation carbon emission factors of each region, including: Carbon emissions from electricity consumption in power transfer area B: Carbon emissions from electricity consumption in net electricity importing region C: In the formula, G T,a→b G represents the amount of electricity delivered from the net power exporting area A to the power importing and exporting area B during the period T; T,a→c represents the amount of electricity transferred from the net power exporting area A to the net power importing area C during the period T; G T,b→c G represents the amount of electricity transferred from power import and export area B to net power import area C during the period T; T,b Indicates the amount of electricity transferred in and out of area B during the T period, G T,c It represents the local self-generated electricity of area C during the T period; The calculation formula for the total power generation of area A with net power transfer is: Among them, G ec,t represents the power generation of the coal-fired unit at time t; G en,t represents the power generation of the gas unit at time t; G el,t represents the power generation of non-fossil energy at time t; g ec,i,t represents the power generation of coal-fired generator set i at time t; g en,j,t represents the power generation of gas generator set j at time t; g el,t,m represents the power generation of non-fossil energy units at time t; n1, n2, n3 represent the number of coal-fired units and gas-fired units in province s respectively; Among them, the local self-generated electricity G of the power transfer area B T,b and the local self-generated electricity G of the net electricity import area C T,c The calculation formula is the same as the calculation formula for the total power generation of area A with net power export.

3. An electronic device, characterized in that: It includes computer program instructions, wherein when the program instructions are executed by a processor, they are used to implement the method for calculating regional electricity carbon emissions considering inter-regional power transmission with temporal and spatial resolution as claimed in claim 1.

4. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, wherein the program instructions, when executed by a processor, are used to implement the method for calculating regional electricity carbon emissions that takes into account inter-regional power transmission with temporal and spatial resolution as described in claim 1.

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