Full-process dynamic power grid side carbon emission accounting method and device

Abstract

The invention provides a full-process dynamic power grid side carbon emission accounting method and device, and is suitable for the technical field of power systems, and the method comprises the steps: obtaining a target accounting main body, and determining an accounting boundary of power grid side carbon emission based on the target accounting main body; obtaining an initial electric energy data set and node characteristics of each electric power node in the accounting boundary, and preprocessing the initial electric energy data set of each electric power node to obtain an electric energy data set corresponding to each node; for each power node, based on the node characteristics of the power node, performing accounting to obtain the node loss carbon emission of the power node; and based on the node characteristics of each power node and the node loss carbon emission, performing accounting to obtain the flow loss carbon emission of each power dynamic flow, and based on the flow loss carbon emission of each power dynamic flow, obtaining the total loss carbon emission of the target accounting main body. According to the invention, the accounting boundary can be clearly divided, and the carbon emission can be accurately calculated according to the power node.

Description

Technical Field

[0001] The present invention belongs to the technical field of power systems, and in particular relates to a full-process dynamic grid-side carbon emission accounting method and device. Background Art

[0002] With the massive consumption of fossil energy and the increase in greenhouse gas emissions such as carbon dioxide, the problem of global climate change is becoming increasingly serious, posing a huge challenge to human society and the natural environment. As an important part of energy consumption, the power industry's carbon emissions account for a significant proportion of the total global carbon emissions. Traditional electricity production and transmission methods, especially thermal power generation that relies on fossil fuels, will produce a large amount of carbon dioxide emissions. The grid side is the power transmission and distribution part of the power system from power stations to end users, including high-voltage transmission lines, substations, distribution networks and other links. It plays a key role in connecting and distributing power supply. With the increase of environmental awareness, grid-side carbon emission accounting is becoming increasingly important for assessing the environmental impact of the power system and promoting carbon emission reduction.

[0003] Determining the boundaries of carbon emission accounting is crucial for carbon emission management on the grid side. This process needs to fully cover all links from power generation to power distribution, including but not limited to power loss during transmission, energy conversion efficiency of substations, and energy loss of distribution lines and other potential sources of carbon emissions. The existing carbon emission accounting methods are mainly used to obtain carbon emissions in the power generation link.

[0004] The existing carbon emission accounting methods cannot accurately calculate carbon emissions based on the specific characteristics of each node (such as transmission lines, substations, distribution lines, etc.), and cannot clearly and accurately divide the boundaries. This brings considerable challenges to the carbon emission accounting work, making it difficult to accurately assess carbon emissions and affecting the ability to provide a scientific basis for the power grid's carbon emission reduction strategy. Summary of the invention

[0005] The embodiments of the present invention provide a full-process dynamic grid-side carbon emission accounting method and device to solve the problem of inaccurate carbon emission accounting results caused by unclear accounting boundary division.

[0006] The present invention is achieved through the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a full-process dynamic grid-side carbon emissions accounting method, including:

[0008] Obtain the target accounting subject and determine the accounting boundary of grid-side carbon emissions based on the target accounting subject;

[0009] Obtaining an initial electric energy data set and node characteristics of each electric node within the accounting boundary, preprocessing the initial electric energy data set of each electric node, and obtaining an electric energy data set corresponding to each node;

[0010] For each power node, based on the node characteristics of the power node, the node loss carbon emission of the power node is calculated;

[0011] Based on the node characteristics of each power node and the node loss carbon emissions, the process loss carbon emissions of each power dynamic process are calculated, and based on the process loss carbon emissions of each power dynamic process, the total loss carbon emissions of the target accounting entity are obtained.

[0012] In a second aspect, an embodiment of the present invention provides a full-process dynamic grid-side carbon emission accounting device, including:

[0013] A determination module is used to obtain a target accounting subject and determine the accounting boundary of grid-side carbon emissions based on the target accounting subject;

[0014] A processing module is used to obtain an initial electric energy data set and node characteristics of each electric node within the accounting boundary, pre-process the initial electric energy data set of each electric node, and obtain an electric energy data set corresponding to each node;

[0015] A calculation module, for calculating, for each power node, the node loss carbon emission of the power node based on the node characteristics of the power node;

[0016] The accounting module is also used to calculate the process loss carbon emissions of each power dynamic process based on the node characteristics of each power node and the node loss carbon emissions, and to obtain the total loss carbon emissions of the target accounting entity based on the process loss carbon emissions of each power dynamic process.

[0017] The embodiment of the present invention provides a full-process dynamic grid-side carbon emission accounting method and device, which determines the target accounting subject, further determines the accounting boundary according to the accounting subject, and calculates the node loss carbon emission of the power node according to the electric energy data set and node characteristics of each power node within the accounting boundary, determines the power dynamic process to which the power node belongs according to the node characteristics, and further obtains the process loss carbon emission of the power dynamic process according to the node loss carbon emission, and then obtains the total loss carbon emission of the target accounting subject according to the process loss carbon emission. It can improve the clarity of the accounting boundary while obtaining the carbon emission information of the full dynamic process of the grid side of the target accounting subject. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a flowchart of a full-process dynamic grid-side carbon emission accounting method provided by an embodiment of the present invention;

[0020] Figure 2 It is a structural schematic diagram of a full-process dynamic grid-side carbon emission accounting device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0022] Figure 1 is a flow chart of a full-process dynamic grid-side carbon emission accounting method provided by an embodiment of the present invention, referring to Figure 1 The full-process dynamic grid-side carbon emission accounting method is described in detail as follows:

[0023] S110, obtaining a target accounting subject, and determining an accounting boundary of grid-side carbon emissions based on the target accounting subject.

[0024] Optionally, the target accounting entity is an electric power company, which can be either a provincial electric power company or a municipal electric power company. By taking the electric power company as the accounting entity, a clear accounting boundary can be obtained.

[0025] Alternatively, the grid side usually refers to a part of the power system, which includes the entire power transmission and distribution process from power stations to power users, including high-voltage transmission lines, substations, distribution networks, etc. The scope of grid-side carbon emission accounting covers all links that may cause carbon emissions in the power system from power generation to final distribution of power, such as energy consumption in the power generation process, losses in the transmission process, energy efficiency conversion in the power transformation process, and energy losses in the power distribution process.

[0026] The transmission line link is mainly the transmission process of electricity from power stations to substations. The main reasons for carbon emissions in the transmission line process include power loss in the transmission line and the energy efficiency of transmission equipment. When calculating carbon emissions in the transmission line link, it is mainly necessary to consider power loss and carbon emission factors in the transmission process.

[0027] The substation link is mainly the process of converting electricity from high voltage to low voltage to meet the distribution needs. The links that generate carbon emissions in the substation process include the energy efficiency of the substation equipment and the power conversion loss. When calculating carbon emissions in the substation link, enterprises need to evaluate the efficiency of the substation equipment and the energy efficiency in the power conversion process, determine the carbon emission factor in the substation process, and conduct real-time monitoring.

[0028] The distribution line link is mainly the process of distributing electricity from substations to various users. The links that generate carbon emissions in the distribution line process include power loss in the distribution line and the energy efficiency of the distribution equipment. When determining the carbon emissions in the distribution line link, it is necessary to consider the resistance of the distribution line, the operating efficiency of the equipment and the load conditions. By calculating the power loss and carbon emission factors in the distribution process, the carbon emissions in the distribution line link can be evaluated.

[0029] S120, obtaining an initial electric energy data set and node characteristics of each electric node within the calculation boundary, preprocessing the initial electric energy data set of each electric node, and obtaining an electric energy data set corresponding to each node.

[0030] Among them, the initial electric energy data set mainly includes the electricity data passing through the transmission line, the voltage at the output end of the transformer, the current at the output end of the transformer, the rated capacity of the transformer, the no-load loss of the transformer, the load loss under the rated capacity of the transformer, the operating time of the transformer, the SF6 gas inventory of SF6 electrical equipment, the gas recovery rate of various SF6 emission pathways, the scrap rate of various SF6 emission pathways of SF6 electrical equipment, the electricity data passing through the distribution lines, and other electricity data related to carbon emissions.

[0031] In one possible implementation, the initial electric energy data set of each power node is preprocessed to obtain the corresponding electric energy data set of each node, including: for the initial electric energy data set of each node, the following steps are performed: data preprocessing is performed on the data in the initial electric energy data set of the node to obtain a preprocessed initial electric energy data set; wherein the preprocessing includes data sorting, data cleaning, data conversion and data normalization; based on the initial electric energy data set, the preprocessed initial electric energy data set is verified and analyzed to obtain the electric energy data set of the node.

[0032] Optionally, while preprocessing the data, the data also needs to be protected. For example, a generalized anonymization method can be used to anonymize the data without affecting the data analysis results. For another example, strict permission management can be implemented for the query, use and modification of data, and advanced access control technology, role-based access control technology and attribute-based access control can be combined. At the same time, encryption technology is used to encrypt and store data to prevent data leakage. These two data protection methods can be used separately or together.

[0033] In addition, this application can also use the Advanced Encryption Standard (AES) algorithm to encrypt the backup data to ensure the security and integrity of the backup data. At the same time, a detailed data recovery plan is formulated to clarify the recovery process and steps in various possible data loss or damage scenarios. The recovery process strictly follows the SSL / TLS protocol to ensure the secure transmission of data during the recovery process.

[0034] By preprocessing the data and verifying the preprocessed data, we can improve the standardization and clarity of the data while ensuring the security and accuracy of the data.

[0035] S130, for each power node, based on the node characteristics of the power node, calculate the node loss carbon emission of the power node.

[0036] Optionally, the node characteristics include a power dynamic process to which the node belongs.

[0037] In one possible implementation, for each power node, the node loss carbon emissions of the power node are calculated based on the node characteristics of the power node, including: for each power node, performing the following steps: based on the node characteristics of the power node, determining the power dynamic process to which the power node belongs; based on the process characteristics of the power dynamic process to which the power node belongs, determining a preset calculation method for the node loss carbon emissions of the power node; based on the electric energy data set of the power node and the preset method, calculating the node loss carbon emissions of the power node.

[0038] In a possible implementation, based on the process characteristics of the power dynamic process to which the power node belongs, determining a preset calculation method for the node loss carbon emission of the power node includes: the process characteristics include a first characteristic, a second characteristic, and a third characteristic;

[0039] The default calculation method for the first feature is:

[0040] E Δ =E S -E C

[0041] Among them, EΔ The carbon emission of the power node of the first characteristic, E S The input carbon emissions of the power node of the first characteristic, E C The output carbon emissions of the power node of the first characteristic;

[0042] The default calculation method for the second feature is:

[0043] E ΔS =W·F S

[0044] Among them, E ΔS is the carbon emission of the power node loss of the second characteristic, W(i) is the power node loss of the second characteristic, F S is the carbon emission factor of the power node of the second characteristic;

[0045] The default calculation method for the third feature is:

[0046]

[0047] in, The carbon emission of the power node is the third characteristic, E S,t is the gas inventory of the equipment in year t; r j is the gas recovery rate of the jth emission pathway; d t,j is the scrapping rate of the j-th emission pathway of the equipment in year t.

[0048] In one possible implementation, the process loss carbon emissions of each power dynamic process are calculated based on the node characteristics of each power node and the node loss carbon emissions, including: determining the power dynamic process to which each node belongs based on the node characteristics of each power node, and determining the power node set of each power dynamic process based on the power dynamic process to which each power node belongs; for each power dynamic process, determining the process loss carbon emissions of the power dynamic process based on the power node set of the power dynamic process and the node loss carbon emissions corresponding to each power node in the power node set.

[0049] In one possible implementation, for each power node, based on the node characteristics of the power node and a preset method, the node loss carbon emissions of the power node are calculated, including: for each power node, performing the following steps: based on the node characteristics of the power node, determining the carbon emission factor of the power node; based on the carbon emission factor and the electric energy data set of the power node, calculating the node loss carbon emissions of the power node.

[0050] In this embodiment, the power dynamic process corresponding to the first feature is a transmission line process or a distribution line process. First, the transmission line process is introduced:

[0051] Transmission lines play a vital role in the power system. They are the key channel for electricity to be transmitted from power plants to substations. These lines form the backbone of the power grid and are responsible for efficiently and safely transmitting large-scale electricity to various areas that need it. The power inflow end of the transmission line is directly connected to the power plant and receives the electricity generated by the power plant. When there is no electricity from other power plants flowing into the transmission line, that is, there is no intervention of other power sources in the transmission process, then the total carbon emissions flowing into the transmission line node are equal to the carbon emissions flowing from the node to the grid side.

[0052] Specifically, the calculation method of carbon emissions of each power node in the transmission line process includes the following:

[0053] The carbon emission factor of a power node in the process of passing through the transmission line is:

[0054] F T =F P

[0055] Among them, F P is the carbon emission factor of the power plant, F T is the carbon emission factor of the power node.

[0056] The total carbon emissions of a power node in the transmission line process are:

[0057] E T =E PT =F P ×S PT

[0058] Among them, E PT With E T is the carbon emissions flowing to the grid through the power node, F P is the carbon emission factor of the power plant, S PT It is the data of the amount of electricity flowing into the power node.

[0059] The carbon emissions at a certain power node in the process of outflowing the transmission line are:

[0060] E TS =S TS ×F T

[0061] Among them, E TS is the carbon emissions flowing out of the power node, S TS is the amount of electricity flowing out of the power node. The carbon emissions generated by the internal loss of the transmission line corresponding to the power node are:

[0062] E ΔT =E PT -ETS

[0063] Secondly, the distribution line process is introduced:

[0064] Distribution lines are the channels connecting substations and end users in the power system. They are responsible for transmitting and distributing the power output from substations to various power-consuming facilities, such as residential, commercial, industrial and other power-consuming units. Distribution lines are the final stage of power supply, which is used to ensure that power is delivered to the user safely, reliably and efficiently.

[0065] Specifically, the calculation method of carbon emissions of each power node in the distribution line process includes the following:

[0066] The carbon emission factor of a certain power node in the distribution line process is:

[0067] F D =F S

[0068] Among them, F S is the carbon emission factor of the power plant, F D is the carbon emission factor of the power node.

[0069] The total carbon emissions from a power node in the distribution line process are:

[0070] E D =F D ×S SD

[0071] Among them, E D is the carbon emissions flowing to the grid through the power node, F D is the carbon emission factor of the power plant, S SD It is the data of the amount of electricity flowing into the power node.

[0072] The carbon emissions at a certain power node in the process of outflowing the transmission line are:

[0073] E DC =S D ·F D

[0074] Among them, E DC is the carbon emissions flowing out of the power node, S D is the amount of electricity flowing out of the power node. The carbon emissions generated by the internal loss of the distribution line corresponding to the power node are:

[0075] E ΔD =E SD -E DC

[0076] In this embodiment, the power dynamic process corresponding to the second feature is the substation process, and the substation process is introduced below:

[0077] When a substation is working, some energy loss is inevitable due to the operation of the transformer. In the process of converting voltage, the transformer will lose some energy due to the resistance of the coil and the hysteresis loss of the core. This part of the lost energy is usually dissipated in the form of heat energy. Although modern transformer designs have reduced these losses as much as possible, they still exist. This lost energy will eventually be converted into heat, resulting in reduced efficiency of the power system. Since fossil fuels may be used in the process of electricity production, this lost energy indirectly increases carbon emissions.

[0078] As a node in the power grid, the functions of the substation include not only voltage conversion and power distribution, but also becoming a key hub for power grid interconnection, realizing the interconnection between different transmission lines and the exchange and trade of electric energy. In this process, the substation receives electricity from multiple sources, which may come from a variety of different power generation methods, such as traditional thermal power, hydropower, solar photovoltaic power, wind power, etc. Each power generation method has its own specific carbon emission factor.

[0079] In the process of carbon emission measurement of substations, it is necessary to determine the inflow of electricity into the substation and the corresponding carbon emission factor. These data can be obtained through the electricity metering device, and the time resolution depends on the data update frequency of the metering device. Specifically, for each inflow of electricity in the substation, it is necessary to determine it based on the carbon emission factor of its previous node, that is, the transmission line. This calculation factor reflects the carbon emissions generated in the process of electricity from the power station to the substation through the transmission line. If the transmission process involves mixed electricity from multiple power generation sources, the carbon emission measurement model of the substation will use appropriate methods to allocate and calculate the carbon emission factors of each source of electricity.

[0080] The average apparent power actually output by the transformer used in a certain power link in the substation process is:

[0081]

[0082] Among them, U is the voltage at the output end of the transformer, and I is the current at the output end of the transformer.

[0083] The average load rate of the transformer is:

[0084]

[0085] Among them, P A is the average apparent power actually output by the transformer during the statistical period, P R is the rated capacity of the transformer.

[0086] The transformer losses are:

[0087] W=(P0+λ 2 P k )×t

[0088] Among them, P0 is the no-load loss of the transformer; P k is the load loss under the rated capacity of the transformer; λ is the average load rate of the transformer, and t is the operating time.

[0089] The amount of electricity flowing through the substation is:

[0090]

[0091] Among them, S Tsn is the amount of electricity flowing to the transformer from the nth transmission line connected to the substation.

[0092] The carbon emission factor of the substation is:

[0093]

[0094] Among them, F Tn is the carbon emission factor of the nth transmission line connected to the substation.

[0095] The carbon emissions generated by internal losses in substations are:

[0096] E ΔS =W·F S

[0097] In this embodiment, the power dynamic process corresponding to the third feature is the equipment process, and the equipment process is introduced below:

[0098] Sulfur hexafluoride electrical equipment in substations is one of the sources of carbon emissions. As a greenhouse gas, sulfur hexafluoride has a very high greenhouse effect potential. If leakage occurs during the operation of electrical equipment, it will directly lead to an increase in carbon emissions.

[0099] Carbon emissions from sulfur hexafluoride electrical equipment are:

[0100]

[0101] in, The carbon emission of the power node is the third characteristic, E S ,t is the gas inventory of the equipment in year t; r j is the gas recovery rate of the jth emission pathway; d t,j is the scrapping rate of the j-th emission pathway of the equipment in year t.

[0102] Among them, each power process may include multiple power nodes. By accumulating the node loss carbon emissions of all power nodes corresponding to each power dynamic process, the process loss carbon emissions of the power dynamic process can be obtained.

[0103] S140, based on the node characteristics of each power node and the node loss carbon emissions, calculate the process loss carbon emissions of each power dynamic process, and based on the process loss carbon emissions of each power dynamic process, obtain the total loss carbon emissions of the target accounting entity.

[0104] In a possible implementation, the power dynamic process includes a transmission line process, a transformer process, an electrical equipment process, and a distribution line process; the electrical equipment in the electrical equipment process is SF6 electrical equipment.

[0105] In one possible implementation, the total loss carbon emissions of the target accounting entity are obtained based on the process loss carbon emissions of each power dynamic process, including: accumulating the process loss carbon emissions of each power dynamic process to obtain the total loss carbon emissions of the target accounting entity.

[0106] In a possible implementation, the method further includes: obtaining the total loss carbon emissions of the target accounting entity in each accounting period, and summarizing and analyzing the total loss carbon emissions of each accounting period to obtain a loss carbon emissions analysis report of the target accounting entity.

[0107] Optionally, the target accounting entity may include multiple power dynamic processes such as transmission, transformation, distribution, and power equipment. By accumulating the process loss carbon emissions corresponding to each power dynamic process, the total loss carbon emissions of the target accounting entity can be obtained.

[0108] Optionally, the accounting period can be determined manually, which can be one month or one year. By recording the total loss carbon emissions in each period and performing summary analysis, the change of the total loss carbon emissions over time can be obtained.

[0109] By determining the target accounting subject, the accounting boundary is further determined based on the accounting subject, and the node loss carbon emissions of the power node are calculated based on the electric energy data set and node characteristics of each power node within the accounting boundary. The power dynamic process to which the power node belongs is determined by the node characteristics, and the process loss carbon emissions of the power dynamic process are further obtained based on the node loss carbon emissions. The total loss carbon emissions of the target accounting subject are then obtained based on the process loss carbon emissions. While improving the clarity of the accounting boundary, the carbon emission information of the full dynamic process on the grid side of the target accounting subject can be obtained. By summarizing and analyzing the total loss carbon emissions of each accounting cycle, the changes in the total loss carbon emissions can be obtained.

[0110] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0111] Corresponding to the full-process dynamic grid-side carbon emission accounting method in the above embodiment, Figure 2 A schematic structural diagram of a full-process dynamic grid-side carbon emission accounting device provided in an embodiment of the present invention is shown. For ease of explanation, only the parts related to the embodiment of the present invention are shown.

[0112] See also Figure 2 The full-process dynamic grid-side carbon emission accounting device 2 in the embodiment of the present invention may include:

[0113] A determination module 21 is used to obtain a target accounting subject and determine the accounting boundary of grid-side carbon emissions based on the target accounting subject;

[0114] The processing module 22 is used to obtain the initial power data set and node characteristics of each power node within the accounting boundary, pre-process the initial power data set of each power node, and obtain the corresponding power data set of each node;

[0115] The calculation module 23 is used to calculate the node loss carbon emission of each power node based on the node characteristics of the power node;

[0116] The accounting module 23 is also used to calculate the process loss carbon emissions of each power dynamic process based on the node characteristics of each power node and the node loss carbon emissions, and to obtain the total loss carbon emissions of the target accounting entity based on the process loss carbon emissions of each power dynamic process.

[0117] In one possible implementation, the processing module 22 is specifically used to perform the following steps for the initial electric energy data set of each node: performing data preprocessing on the data in the initial electric energy data set of the node to obtain a preprocessed initial electric energy data set; wherein the preprocessing includes data sorting, data cleaning, data conversion and data normalization; based on the initial electric energy data set, performing verification and analysis on the preprocessed initial electric energy data set to obtain the electric energy data set of the node.

[0118] In one possible implementation, the accounting module 23 is specifically used to perform the following steps for each power node: based on the node characteristics of the power node, determine the power dynamic process to which the power node belongs; based on the process characteristics of the power dynamic process to which the power node belongs, determine the preset calculation method for the node loss carbon emissions of the power node; based on the electric energy data set of the power node and the preset method, calculate the node loss carbon emissions of the power node.

[0119] In a possible implementation, the process feature includes a first feature, a second feature, and a third feature;

[0120] The default calculation method for the first feature is:

[0121] E Δ =E S -E C

[0122] Among them, E Δ The carbon emission of the power node of the first characteristic, E S The input carbon emissions of the power node of the first characteristic, E C The output carbon emissions of the power node of the first characteristic;

[0123] The default calculation method for the second feature is:

[0124] E ΔS =W·F S

[0125] Among them, E ΔS is the carbon emission of the power node loss of the second characteristic, W(i) is the power node loss of the second characteristic, F S is the carbon emission factor of the power node of the second characteristic;

[0126] The default calculation method for the third feature is:

[0127]

[0128] in, The carbon emission of the power node is the third characteristic, E S,t is the gas inventory of the equipment in year t; r j is the gas recovery rate of the jth emission pathway; d t,j is the scrapping rate of the j-th emission pathway of the equipment in year t.

[0129] In one possible implementation, the accounting module 23 is also used to determine the power dynamic process to which each node belongs based on the node characteristics of each power node, and determine the power node set of each power dynamic process based on the power dynamic process to which each power node belongs; for each power dynamic process, determine the process loss carbon emissions of the power dynamic process based on the power node set of the power dynamic process and the node loss carbon emissions corresponding to each power node in the power node set.

[0130] In one possible implementation, the accounting module 23 is also used to perform the following steps for each power node: determine the carbon emission factor of the power node based on the node characteristics of the power node; and calculate the node loss carbon emissions of the power node based on the carbon emission factor and the electric energy data set of the power node.

[0131] In a possible implementation, the power dynamic process includes a transmission line process, a transformer process, an electrical equipment process, and a distribution line process; the electrical equipment in the electrical equipment process is SF6 electrical equipment.

[0132] In a possible implementation, the accounting module 23 is further used to accumulate the process loss carbon emissions of each power dynamic process to obtain the total loss carbon emissions of the target accounting subject.

[0133] In a possible implementation, the accounting module 23 is also used to obtain the total loss carbon emissions of the target accounting entity in each accounting period, and summarize and analyze the total loss carbon emissions of each accounting period to obtain a loss carbon emissions analysis report of the target accounting entity.

[0134] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0135] Those of ordinary skill in the art will appreciate that the templates, units, and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0136] If the module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, it can implement the steps of the above-mentioned various full-process dynamic grid-side carbon emission accounting method embodiments. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. Computer-readable media may include: any entity or device that can carry computer program code, recording media, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier signal, telecommunication signal and software distribution medium.

[0137] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A full-process dynamic grid-side carbon emission accounting method, characterized in that: include: Obtaining a target accounting subject, and determining an accounting boundary of grid-side carbon emissions based on the target accounting subject; Acquire an initial electric energy data set and node characteristics of each electric node within the calculation boundary, preprocess the initial electric energy data set of each electric node, and obtain an electric energy data set corresponding to each node; For each power node, based on the node characteristics of the power node, the node loss carbon emission of the power node is calculated; Based on the node characteristics of each power node and the node loss carbon emissions, the process loss carbon emissions of each power dynamic process are calculated, and based on the process loss carbon emissions of each power dynamic process, the total loss carbon emissions of the target accounting entity are obtained.

2. The full-process dynamic grid-side carbon emission accounting method according to claim 1 is characterized in that: The node loss carbon emission of each power node is calculated based on the node characteristics of the power node, including: For each power node, perform the following steps: Based on the node characteristics of the power node, determining the power dynamic process to which the power node belongs; Determine a preset calculation method for the node loss carbon emission of the power node based on the process characteristics of the power dynamic process to which the power node belongs; Based on the electric energy data set of the power node and the preset method, the node loss carbon emission of the power node is calculated.

3. The full-process dynamic grid-side carbon emission accounting method according to claim 1 is characterized in that: The power dynamic process includes a transmission line process, a transformer process, an electrical equipment process and a distribution line process; the electrical equipment in the electrical equipment process is SF6 electrical equipment.

4. The full-process dynamic grid-side carbon emission accounting method according to claim 1 is characterized in that: The preprocessing of the initial electric energy data set of each power node to obtain the electric energy data set corresponding to each node includes: For each node’s initial energy dataset, perform the following steps: Performing data preprocessing on the data in the initial electric energy data set of the node to obtain a preprocessed initial electric energy data set; wherein the preprocessing includes data sorting, data cleaning, data conversion and data normalization; Based on the initial electric energy data set, the preprocessed initial electric energy data set is verified and analyzed to obtain the electric energy data set of the node.

5. The full-process dynamic grid-side carbon emission accounting method according to claim 2 is characterized in that: The method of determining the preset calculation method of the node loss carbon emission of the power node based on the process characteristics of the power dynamic process to which the power node belongs includes: The process characteristics include a first characteristic, a second characteristic and a third characteristic; The preset calculation method of the first feature is: AND ΔD =And S -AND C Among them, E Δ The carbon emission of the power node of the first characteristic, E S The input carbon emissions of the power node of the first characteristic, E C The output carbon emissions of the power node of the first characteristic; The preset calculation method of the second feature is: have been ΔS =W·F S Among them, E ΔS is the carbon emission of the power node loss of the second characteristic, W(i) is the power node loss of the second characteristic, F S is the carbon emission factor of the power node of the second characteristic; The preset calculation method of the third feature is: Among them, E S,t The carbon emission of the power node is the third characteristic, E S,t is the gas inventory of the equipment in year t; r j is the gas recovery rate of the jth emission pathway; d t,j is the scrapping rate of the j-th emission pathway of the equipment in year t.

6. The full-process dynamic grid-side carbon emission accounting method according to claim 2 is characterized in that: The process loss carbon emissions of each power dynamic process are calculated based on the node characteristics of each power node and the node loss carbon emissions, including: Based on the node characteristics of each power node, determine the power dynamic process to which each node belongs, and based on the power dynamic process to which each power node belongs, determine the power node set of each power dynamic process; For each power dynamic process, the process loss carbon emissions of the power dynamic process are determined based on the power node set of the power dynamic process and the node loss carbon emissions corresponding to each power node in the power node set.

7. The full-process dynamic grid-side carbon emission accounting method according to claim 1 is characterized in that: The total carbon emission loss amount of the target accounting subject is obtained based on the carbon emission loss amount of each power dynamic process, including: The process loss carbon emissions of each power process are accumulated to obtain the total loss carbon emissions of the target accounting entity.

8. The full-process dynamic grid-side carbon emission accounting method according to claim 2 is characterized in that: The node loss carbon emission amount of each power node is calculated based on the node characteristics of the power node and the preset method, including: For each power node, perform the following steps: Determining a carbon emission factor of the power node based on the node characteristics of the power node; Based on the carbon emission factor and the electric energy data set of the power node, the node loss carbon emission of the power node is calculated.

9. The full-process dynamic grid-side carbon emission accounting method according to claim 1 is characterized in that: The method further comprises: The total loss carbon emissions of the target accounting entity in each accounting period are obtained, and the total loss carbon emissions of each accounting period are summarized and analyzed to obtain a loss carbon emissions analysis report of the target accounting entity.

10. A full-process dynamic grid-side carbon emission accounting device, characterized in that: include: A determination module, used to obtain a target accounting subject and determine the accounting boundary of grid-side carbon emissions based on the target accounting subject; A processing module, used to obtain an initial electric energy data set and node characteristics of each electric node within the calculation boundary, pre-process the initial electric energy data set of each electric node, and obtain an electric energy data set corresponding to each node; A calculation module, for calculating, for each power node, the node loss carbon emission of the power node based on the node characteristics of the power node; The accounting module is also used to calculate the process loss carbon emissions of each power dynamic process based on the node characteristics of each power node and the node loss carbon emissions, and to obtain the total loss carbon emissions of the target accounting entity based on the process loss carbon emissions of each power dynamic process.

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