Zero-carbon substation full-life-cycle carbon emission accounting method, system and device and storage medium

Abstract

The invention discloses a zero-carbon substation full-life-cycle carbon emission accounting method, system and device and a storage medium, and the method comprises the steps: obtaining a first-stage carbon emission parameter, and carrying out the first calculation of the total carbon emission amount corresponding to a first stage according to the first-stage carbon emission parameter; second-stage carbon emission parameters are obtained, and second calculation is conducted on the total second-stage carbon emission amount according to the second-stage carbon emission parameters; third-stage carbon emission parameters are obtained, and third calculation is conducted on the total third-stage carbon emission amount according to the third-stage carbon emission parameters; according to the total carbon emission amount corresponding to the first stage, the total carbon emission amount of the second stage and the total carbon emission amount of the third stage, the total carbon emission amount of the whole life cycle of the transformer substation is obtained through calculation, accurate emission reduction can be achieved, the environmental protection efficiency is improved, and green electric power development is promoted.

Description

Technical Field

[0001] This invention relates to the field of carbon emission accounting technology for substations, and in particular to a method, system, equipment, and storage medium for carbon emission accounting throughout the entire life cycle of a zero-carbon substation. Background Technology

[0002] Carbon emission rights are the right to emit carbon dioxide. They refer to the right of emitters to emit carbon dioxide within the quota allocated by the environmental protection authorities, without harming the rights and interests of other publics. With global warming and worsening urban smog, carbon emissions, which contribute to the greenhouse effect, have gradually gained attention, and carbon emission reduction has become a global hot topic. Carbon emission rights are an effective means of controlling carbon emissions.

[0003] Currently, there is no specific carbon emission accounting method for the entire life cycle of substations. However, in other fields, such as carbon emission accounting methods for the entire life cycle of transportation facilities, as well as carbon emission accounting methods for residential communities and industrial parks, although they have some reference value, their reference value is limited because the specific carbon emission objects / parameters to be accounted for are different in different fields. Therefore, a carbon emission accounting method for the entire life cycle of zero-carbon substations is proposed. Summary of the Invention

[0004] In view of the aforementioned existing problems, the present invention is proposed.

[0005] Therefore, this invention provides a method, system, equipment, and storage medium for calculating carbon emissions throughout the entire life cycle of a zero-carbon substation. This addresses the problem that existing technologies have different specific carbon emission objects / parameters that need to be calculated, limited reference value, and a lack of a dedicated method for calculating carbon emissions throughout the entire life cycle of substations.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a method for carbon emission accounting throughout the entire life cycle of a zero-carbon substation, comprising:

[0008] Obtain the carbon emission parameters for the first stage, and perform a first calculation on the total carbon emissions corresponding to the first stage based on the carbon emission parameters for the first stage.

[0009] Obtain the carbon emission parameters for the second stage, and perform a second calculation on the total carbon emissions for the second stage based on the carbon emission parameters for the second stage.

[0010] Obtain the third-stage carbon emission parameters, and perform a third calculation on the total third-stage carbon emissions based on the third-stage carbon emission parameters;

[0011] The total carbon emissions of the substation throughout its entire life cycle are calculated based on the total carbon emissions of the first stage, the total carbon emissions of the second stage, and the total carbon emissions of the third stage.

[0012] As a preferred embodiment of the zero-carbon substation full life-cycle carbon emission accounting method described in this invention, the first calculation includes:

[0013] The carbon emissions generated by all activities related to the substation are calculated using the first-stage carbon emission parameters;

[0014] The total carbon emissions from all activities are added together to obtain the total carbon emissions for the first phase.

[0015] The beneficial effects of this preferred technical solution are that by accurately calculating the carbon emissions of all activities during the substation construction phase, it provides a scientific basis for the full life cycle carbon emission assessment, which helps to achieve precise emission reduction and improve environmental benefits.

[0016] As a preferred embodiment of the zero-carbon substation full life-cycle carbon emission accounting method described in this invention, the second calculation includes:

[0017] The carbon emissions of all energy consumption and emission activities of the substation in the second phase are calculated using the carbon emission parameters of the second phase.

[0018] The total carbon emissions for the second phase are obtained by adding up the carbon emissions from all energy consumption and emission activities.

[0019] The beneficial effects of this preferred technical solution are that by accurately calculating the carbon emissions during the operation of substations, covering energy consumption and emission activities, it helps to optimize operations, reduce carbon footprint, and promote the development of green electricity.

[0020] As a preferred embodiment of the zero-carbon substation full life-cycle carbon emission accounting method described in this invention, the third calculation includes:

[0021] The carbon emissions of all activities related to the decommissioning and dismantling of the substation in Phase III are calculated using Phase III carbon emission parameters.

[0022] The total carbon emissions of the third phase are obtained by adding up the carbon emissions of all activities related to end-of-life dismantling.

[0023] The beneficial effects of this preferred technical solution are that by accurately calculating the carbon emissions during the decommissioning and dismantling phase of substations, it helps to achieve low-carbon management throughout the entire life cycle and improves environmental efficiency.

[0024] As a preferred embodiment of the zero-carbon substation lifecycle carbon emission accounting method described in this invention, the carbon emissions generated by all activities related to the substation include:

[0025] The carbon emissions from the production of building materials and substation components are obtained by adding the carbon emissions from the production of building materials and the carbon emissions from the production of substation components.

[0026] The carbon emissions from the transportation of building materials and substation components are obtained by the consumption of each type of building material and substation component, the average transportation distance of each type of building material and substation component, and the carbon emission factor per unit weight of transportation distance under each transportation method.

[0027] The carbon emissions of temporary construction facilities are obtained through energy consumption time, energy consumption density, area, and carbon emission factor.

[0028] As a preferred embodiment of the zero-carbon substation full life-cycle carbon emission accounting method described in this invention, the carbon emissions from all energy consumption and emission activities include:

[0029] The carbon emissions related to the equipment were calculated using the carbon emission parameters of the sulfur hexafluoride equipment and the carbon emission parameters generated by the refrigerant used in the substation.

[0030] Carbon emissions related to energy loss are calculated from carbon emission parameters of power transmission and distribution losses, carbon emission parameters of HVAC systems, carbon emission parameters of lighting and substation facilities and equipment, and carbon emission parameters of domestic hot water systems.

[0031] Carbon emissions related to renewable energy and carbon sinks are calculated using carbon emission parameters of renewable energy systems and relevant parameters of carbon reduction from green lawns and turf.

[0032] As a preferred embodiment of the zero-carbon substation lifecycle carbon emission accounting method described in this invention, the total carbon emissions of the substation throughout its lifecycle include:

[0033] The total carbon emissions of the first stage, the second stage, and the third stage are added together to obtain the total carbon emissions of the substation throughout its entire life cycle.

[0034] The annual carbon emission intensity of a substation throughout its entire life cycle is obtained by dividing the total carbon emissions of the substation by the product of its building area and its building life.

[0035] The beneficial effects of this preferred technical solution are that by comprehensively calculating the carbon emissions of the substation throughout its entire life cycle and calculating the average annual carbon emission intensity, it provides a scientific basis for the construction of zero-carbon substations and helps to achieve precise emission reduction.

[0036] Secondly, the present invention provides a zero-carbon substation full life-cycle carbon emission accounting system, comprising:

[0037] The first calculation module is used to obtain the carbon emission parameters of the first stage and perform a first calculation on the total carbon emission of the first stage based on the carbon emission parameters of the first stage.

[0038] The second calculation module is used to obtain the carbon emission parameters of the second stage and perform a second calculation on the total carbon emissions of the second stage based on the carbon emission parameters of the second stage.

[0039] The third calculation module is used to obtain the carbon emission parameters of the third stage and perform a third calculation on the total carbon emission of the third stage based on the carbon emission parameters of the third stage.

[0040] The total emission calculation module is used to calculate the total carbon emissions of the substation throughout its entire life cycle based on the total carbon emissions of the first stage, the total carbon emissions of the second stage, and the total carbon emissions of the third stage.

[0041] Thirdly, the present invention provides a computer device, including a memory and a processor, wherein the memory stores a computer program, characterized in that the processor executes the computer program to implement the steps of the zero-carbon substation full life cycle carbon emission accounting method.

[0042] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, characterized in that, when the computer program is executed by a processor, it implements the steps of the method for calculating carbon emissions throughout the entire life cycle of a zero-carbon substation.

[0043] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention solves the problem of the lack of a dedicated method for calculating carbon emissions throughout the entire life cycle of a substation by accurately calculating the carbon emissions at each stage of the substation's life cycle. By acquiring carbon emission parameters in stages and accurately calculating the total carbon emissions at each stage, it comprehensively covers the entire life cycle of a substation from construction and operation to decommissioning and dismantling. The refined calculation method provides a scientific basis for the construction, operation, and promotion of zero-carbon substations, ensuring the accuracy and reliability of carbon emission assessment. At the same time, it quantifies the carbon emission reduction effect of renewable energy utilization during the operation stage, providing data support for optimizing substation operation. By accurately calculating carbon emissions at each stage, it helps to discover emission reduction potential, promote the implementation of energy-saving and emission-reduction measures, thereby improving environmental protection efficiency and promoting the development of green electricity. This invention considers the differences in energy structures in different regions. By adopting a standard emission factor database and combining it with regional proportion adjustments, it can adapt to regions with different natural conditions and energy structures, and has wide applicability. Attached Figure Description

[0044] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the overall process logic of a zero-carbon substation full life cycle carbon emission accounting method provided in one embodiment of the present invention. Detailed Implementation

[0046] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0047] Example 1, referring to Figure 1 As an embodiment of the present invention, a method for calculating the carbon emissions of a zero-carbon substation throughout its entire life cycle is provided, comprising:

[0048] S100: Obtain the carbon emission parameters for the first stage, and perform the first calculation on the total carbon emissions corresponding to the first stage based on the carbon emission parameters for the first stage.

[0049] S200: Obtain the second-stage carbon emission parameters and perform a second calculation on the total second-stage carbon emissions based on the second-stage carbon emission parameters;

[0050] S300: Obtain the third-stage carbon emission parameters and perform a third-stage calculation on the total third-stage carbon emissions based on the third-stage carbon emission parameters;

[0051] S400: The total carbon emissions of the substation throughout its entire life cycle are calculated based on the total carbon emissions of the first stage, the total carbon emissions of the second stage, and the total carbon emissions of the third stage.

[0052] It should be noted that by obtaining carbon emission parameters in stages and calculating the total carbon emissions in each stage, the total carbon emissions of the substation throughout its entire life cycle are obtained. This ensures the accuracy of the calculation and provides scientific guidance for the construction, operation and promotion of zero-carbon substations. It helps to achieve precise emission reduction and improve environmental protection efficiency.

[0053] In this embodiment of the invention, step S100 includes the following sub-steps A1-A2;

[0054] In A1: The carbon emissions produced by all activities related to the substation are calculated using the first-stage carbon emission parameters;

[0055] In A2: The carbon emissions produced by all activities are added together to obtain the total carbon emissions for the first stage.

[0056] In one alternative embodiment, the carbon emissions generated by all activities related to the substation can be the carbon emissions from equipment installation and commissioning, obtained by summing the products of the number of times each piece of equipment is used and the corresponding carbon emission factor of the equipment.

[0057] In one alternative embodiment, the carbon emissions generated by all activities related to the substation can be the carbon emissions from construction waste treatment, obtained by summing the products of the weight of each type of waste and the corresponding waste treatment carbon emission factor;

[0058] In this embodiment of the invention, the first stage is the materialization stage of the substation. The carbon emissions generated by all activities related to the substation include the carbon emissions from the production of building materials and substation components, the carbon emissions from the transportation of building materials and substation components, the carbon emissions from construction and construction, and the carbon emissions from temporary construction facilities.

[0059] It should be noted that the carbon emissions generated by all activities related to the substation selected can comprehensively cover the carbon emission sources during the substation construction phase. This helps to accurately calculate the total carbon emissions during the construction process, providing data support for achieving low-carbon construction, thereby effectively guiding the implementation of energy conservation and emission reduction measures and improving environmental benefits.

[0060] In this embodiment of the invention, after completing steps A1-A2, step S100 also includes steps A3-A5;

[0061] In A3: The carbon emissions from the production of building materials and substation components are obtained by adding the carbon emissions from the production of building materials and the carbon emissions from the production of substation components;

[0062] In A4: The carbon emissions from the transportation of building materials and substation components are obtained by the consumption of each type of building material and substation component, the average transportation distance of each type of building material and substation component, and the carbon emission factor per unit weight of transportation distance under each transportation method for each type of building material and substation component.

[0063] In A5: The carbon emissions of temporary construction facilities are obtained through energy consumption time, energy consumption density, area, and carbon emission factor.

[0064] Specifically, the carbon emissions from the production of building materials and substation components are expressed as follows:

[0065] Csc=Cjc+Czj

[0066] Among them, Csc represents carbon emissions from the production of building materials and substation components, Cjc represents carbon emissions from the production of building materials, and Czj represents carbon emissions from the production of substation components.

[0067] Carbon emissions from building materials production include the following building materials: concrete, steel, timber, doors and windows, glass, insulation materials, waterproofing materials, plastering, and finishing materials.

[0068] The carbon emissions from building materials production are calculated as follows:

[0069]

[0070] Where Mi represents the consumption of the i-th major building material, and Fi represents the carbon emission factor of the i-th major building material. The carbon emission factors in the building material production stage include:

[0071] The production of building materials involves carbon emissions from raw material extraction and production processes; carbon emissions from energy extraction and production processes; carbon emissions from the transportation of raw materials and energy; and direct carbon emissions from the production process itself.

[0072] Carbon emissions from the production of substation components include transformers, reactors, integrated capacitor banks, high-voltage switchgear, power line carrier equipment, communication power supply equipment, PCM equipment, network management equipment, air conditioning equipment, heating equipment, dust removal equipment, and charging pile equipment.

[0073] The carbon emissions from the production of substation components are calculated as follows:

[0074]

[0075] Wherein, Ni is the consumption of the i-th main substation component, Ei is the carbon emission factor of the i-th main substation component, and the consumption of the main building materials Mi and the consumption of the main substation components Ni are determined through the material consumption data list, substation design drawings, and building material procurement list.

[0076] Specifically, the carbon emissions from the transportation of building materials and substation components are expressed as follows:

[0077]

[0078] Where Mi is the consumption of the i-th main building material and substation component, in t; Di is the average transportation distance of the i-th building material and substation component, in km; and F(ys-i) is the carbon emission factor per unit weight transportation distance under the transportation mode of the i-th building material and substation component.

[0079] The carbon emission factor F(ys-i) during the transportation of building materials should include the direct carbon emissions, indirect carbon emissions, and carbon emissions from the production process of building materials from the production site to the construction site, as well as the carbon emissions from the production process that consumes energy during transportation.

[0080] Specifically, the carbon emissions from construction are calculated as follows:

[0081]

[0082] Where F(sg-i) is the carbon footprint factor of the i-th type of construction machinery, and Ni is the number of shifts of the i-th type of construction machinery.

[0083] Specifically, carbon emissions from temporary construction facilities mainly include carbon emissions from office equipment, air conditioning, and lighting in the office area of ​​the construction site, carbon emissions from air conditioning and lighting in the living area, and carbon emissions from electricity and gas consumption in the canteen.

[0084] The carbon emissions from temporary construction facilities are calculated as follows:

[0085]

[0086] Where T(i,j) represents the j-th energy consumption time in the i-th region, determined based on the construction period factor, and P(i,j) represents the j-th energy consumption density in the i-th region, in W / m³. 2 Ai is the area of ​​the i-th region, in meters. 2 EFe represents the carbon emission factor of the power system, i represents the building space type, including offices, dormitories, canteens, and toilets, and j represents the building energy consumption type, including lighting, air conditioning and heating, and air conditioning and cooling.

[0087] It should be noted that by breaking down and quantifying the carbon emission sources during the substation construction phase in detail, the comprehensiveness and accuracy of carbon emission accounting are ensured. Specifically, the carbon emissions of building materials and components production, transportation, construction, and temporary facilities are calculated separately, covering the entire process from raw material mining to construction completion, providing a scientific basis for the low-carbon design and construction of substations.

[0088] In this embodiment of the invention, step S200 includes the following sub-steps B1-B2;

[0089] In B1: The carbon emissions of all energy consumption and emission activities of the substation in Phase II are calculated using Phase II carbon emission parameters;

[0090] In B2: The carbon emissions from all energy consumption and emission activities are added together to obtain the total carbon emissions for the second stage.

[0091] In an alternative embodiment, the carbon emissions of all energy consumption and emission activities can be the carbon emissions of substation maintenance activities, obtained by summing the products of the number of each maintenance activity and the carbon emission factor of each maintenance activity;

[0092] In one alternative embodiment, the carbon emissions of all energy consumption and emission activities can be the carbon emissions of the substation emergency power generation equipment, obtained by summing the products of the electricity generated in each emergency power generation and the carbon emission factor of each emergency power generation.

[0093] In this embodiment of the invention, the second stage is the operation stage, and the carbon emissions of all energy consumption and emission activities can be the carbon emissions of sulfur hexafluoride equipment, the emissions generated by power transmission and distribution losses, the carbon emissions of heating, ventilation and air conditioning systems, the carbon emissions generated by the use of refrigerants in substations, the carbon emissions of lighting and substation facilities and equipment, the carbon emissions of domestic hot water systems, the carbon emissions of renewable energy systems, and the carbon reduction of green plants and lawns.

[0094] It should be noted that the accuracy of carbon emission accounting was ensured by comprehensively calculating the carbon emissions of all energy consumption and emission activities during the substation operation phase.

[0095] In this embodiment of the invention, after completing steps B1-B2, step S200 also includes steps B3-B5;

[0096] In B3: Equipment-related carbon emissions are calculated using carbon emission parameters from sulfur hexafluoride equipment and carbon emission parameters from refrigerant used in substations;

[0097] In B4: Carbon emissions related to energy loss are calculated from carbon emission parameters of power transmission and distribution losses, carbon emission parameters of HVAC systems, carbon emission parameters of lighting and substation facilities and equipment, and carbon emission parameters of domestic hot water systems.

[0098] In B5: Carbon emissions related to renewable energy and carbon sinks are calculated using carbon emission parameters of renewable energy systems and relevant parameters of carbon reduction from green lawns and turf.

[0099] Specifically, the total carbon emissions during the substation operation phase are the sum of the carbon emissions from each stage of the operation phase, expressed as follows:

[0100] Cyy=CSF6+Cds+Cnk+Cr+Czs+Csr-Ckz-Cth

[0101] Among them, Cyy represents the carbon emissions during the substation operation phase, CSF6 represents the carbon emissions from sulfur hexafluoride equipment, Cds represents the emissions from power transmission and distribution losses, Cnk represents the carbon emissions from the HVAC system, Cr represents the carbon emissions from the refrigerant used in the substation, Czs represents the carbon emissions from lighting and substation facilities and equipment, Csr represents the carbon emissions from the domestic hot water system, Ckz represents the carbon emissions from the renewable energy system, and Cth represents the carbon reduction from green plants and lawns.

[0102] Specifically, carbon emissions from sulfur hexafluoride (SF6) equipment mainly include emissions generated during the repair and decommissioning processes of SF6 equipment. The emissions from these processes are calculated as follows:

[0103]

[0104] in, The carbon emissions generated during the repair and decommissioning of sulfur hexafluoride (SF6) equipment are represented by GWPSF6, the greenhouse gas potential of SF6 is represented by REC(rl,i), the SF6 capacity of decommissioned equipment i is represented by REC(hs,i), the actual SF6 recovery rate of decommissioned equipment i is represented by REC(rl,j), the SF6 capacity of repaired equipment j is represented by REP(rl,j), and the actual SF6 recovery rate of repaired equipment j is represented by REP(hs,j).

[0105] The carbon emissions generated by power transmission and distribution losses in substations are calculated as follows:

[0106] Cds = ADws × EFdw

[0107] Where ADws represents the amount of power lost in transmission and distribution, in megawatt-hours, and EFdw represents the regional annual average power supply emission factor.

[0108] The calculation of power transmission and distribution losses is expressed as follows:

[0109] ADws=ELjx-ELcx

[0110] Wherein, ELjx represents the input power of the substation, and ELcx represents the output power of the substation;

[0111] The input power of the substation is calculated as follows:

[0112] ELjx = ELsw + ELsr - ELsc

[0113] Among them, ELsw is the power generation fed into the grid by the power plant, ELsr is the power generation imported from other provinces, and ELsc is the power generation exported to other provinces.

[0114] Specifically, carbon emissions from the HVAC process can include carbon emissions generated by energy consumption of cold sources, heat sources, distribution systems, and terminal air handling equipment. Distribution systems include chilled water systems, cooling water systems, hot water systems, and air systems.

[0115] Carbon emissions from the HVAC process are calculated based on its energy consumption and carbon emission factor, and are expressed as follows:

[0116]

[0117] Wherein, Enk(i) represents the energy consumption of type i in the HVAC process, EF(i) represents the carbon emission factor of type i energy, and (i) represents the type of terminal energy consumed by the substation, including electricity, oil, gas, and municipal heating.

[0118] If the HVAC system of a substation uses a refrigerant that contributes to the greenhouse effect, then the greenhouse gas emissions from the refrigerant use in the HVAC system are calculated as follows:

[0119]

[0120] Wherein, Cr is the carbon emissions generated by the refrigerant used in the building, i is the type of refrigerant, m(i-cz) is the refrigerant charge of the equipment, m(i-hs) is the actual amount of refrigerant recovered, in kg / unit, ye is the service life of the equipment, and GWPi is the global warming potential of refrigerant i.

[0121] The carbon emissions of lighting and substation facilities and equipment are calculated and expressed as follows, based on their energy consumption and carbon emission factor:

[0122]

[0123] Wherein, Ezsi is the energy consumption of the i-th type in the lighting and substation facilities and equipment, EFi is the carbon emission factor of the i-th type of energy, and i is the type of end energy consumed by the substation, including electricity, gas, oil, and municipal heating.

[0124] Substation facilities and equipment should include transformers, reactors, integrated capacitor banks, power line carrier equipment, communication power supply equipment, PCM equipment, network management equipment, and charging piles—all energy-consuming facilities and equipment in a substation.

[0125] In addition, the lighting power density value used in the carbon emission calculation of the substation should be consistent with the substation design documents.

[0126] When a lighting system lacks a photoelectric automatic control system, its energy consumption is calculated as follows:

[0127]

[0128] Where E1 is the annual energy consumption of the lighting system, in kWh / a, and P(i,j) is the energy density of the j-th type in the i-th region, in W / m³. 2 Ai is the lighting area of ​​the i-th room, t(i,j) is the j-th energy consumption time in the i-th area, Pp is the emergency lighting power density, and A is the building area;

[0129] The carbon emissions of a domestic hot water system are calculated using its energy consumption and carbon emission factor as follows:

[0130]

[0131] Where Ewi is the energy consumption of type i in the domestic hot water process, EFi is the carbon emission factor of type i energy, and i is the type of terminal energy consumed by the substation, including electricity, gas, oil, and municipal heating.

[0132] The energy consumption calculation for the substation's domestic hot water system is expressed as follows:

[0133] Ew=(Qr / ηr-Qs) / ηw

[0134] Where Ew is the annual energy consumption of the domestic hot water system in kWh / a, Qr is the annual heat consumption of domestic hot water in kWh / a, Qs is the heat of domestic hot water provided by the solar energy system in kWh / a, ηr is the domestic hot water transmission and distribution efficiency, including the transmission and distribution energy consumption of the hot water system, pipeline heat loss, heat loss of domestic hot water secondary circulation and storage, and ηw is the annual average efficiency of the heat source of the domestic hot water system.

[0135] The annual heat consumption for domestic hot water in a substation should be calculated based on the actual operating conditions of the substation, and expressed as follows:

[0136] Qr 年 =T×Qrp

[0137]

[0138] Among them, Qr 年 The annual heat consumption of domestic hot water is Qrp, the average hourly heat consumption of domestic hot water is T, the number of hours of domestic hot water use per year is m, the number of units for water use calculation, i.e., the number of people; Cr is the specific heat capacity of water, with a value of 4.187; ρr is the density of hot water; tr is the design hot water temperature, wherein the design hot water temperature of the centralized domestic hot water heater should not exceed 60℃; and t1 is the design cold water temperature.

[0139] The carbon emissions of renewable energy systems are calculated as follows:

[0140]

[0141] Where Qsa is the annual energy supply of the solar water heating system, Ac is the area of ​​the solar collector, JT is the annual average solar radiation on the solar collector's light-collecting surface, ηcd is the average heat collection efficiency of the collector based on the total area, and ηL is the heat loss rate of the pipeline and heat storage device.

[0142] The power generation of a photovoltaic system should preferably be calculated using the actual energy consumption measurement method, with independent electricity meters installed on the corresponding power generation system for statistical accounting; if not, the annual power generation of the photovoltaic system can be calculated as follows:

[0143] Epv=I×KE×(1-ks)×Ap

[0144] Where Epv is the annual power generation of the photovoltaic system, I is the annual solar irradiance on the surface of the photovoltaic cell, KE is the conversion efficiency of the photovoltaic cell, ks is the loss efficiency of the photovoltaic system, and Ap is the net area of ​​the photovoltaic panel of the photovoltaic system.

[0145] The power generation of wind turbine generators should preferably be calculated using the actual energy consumption measurement method, with independent electricity meters installed in the corresponding power generation system for statistical accounting. If not, the annual power generation of wind turbine generators can be calculated as follows:

[0146]

[0147] A w =5D 2 / 4

[0148]

[0149] Among them, E wt Let ρ be the annual power generation of the wind turbine generator, and ρ be the air density, taken as 1.225 kg / m³. 3 ; K is the roughness coefficient calculated based on height. R Site factor; The installation height of the wind turbine; V0 is the surface roughness coefficient; V0 is the annual available average wind speed; D is the wind turbine blade diameter; EPF is a factor calculated based on hourly wind speeds from typical meteorological year data; APD is the annual average energy density; V0 i For hourly wind speed; K wr This refers to the conversion efficiency of the wind turbine generator set.

[0150] The green lawns planted within the substation area can form a carbon sink to offset some of the carbon emissions. The carbon reduction from the green lawn carbon sink is expressed as follows:

[0151]

[0152] Where Ai represents the number of plants of type i, and PEFi represents the carbon sequestration capacity per unit of plants of type i.

[0153] It should be noted that by comprehensively calculating the carbon emissions of each stage of substation operation, ensuring accurate calculations, and quantifying the carbon emissions of each activity in detail, we can provide a scientific basis for energy conservation and emission reduction, and help achieve the goal of zero carbon emissions.

[0154] In this embodiment of the invention, step S300 includes the following sub-steps C1-C2;

[0155] In C1: Carbon emissions from all activities related to the decommissioning and dismantling of the substation in Phase 3 are calculated using Phase 3 carbon emission parameters;

[0156] In C2: The carbon emissions of all activities related to end-of-life dismantling are added together to obtain the total carbon emissions for the third stage.

[0157] In one alternative embodiment, the carbon emissions of all activities related to end-of-life dismantling can be the carbon emissions of waste treatment, obtained by summing the products of the weight of each type of waste and the carbon emission factor of each type of waste treatment;

[0158] In one alternative embodiment, the carbon emissions of all activities related to end-of-life dismantling can be the carbon emissions of equipment dismantling, obtained by summing the products of the number of times each dismantling device was used and the carbon emission factor of each dismantling device.

[0159] In this embodiment of the invention, the third stage is the scrapping and dismantling stage, and the carbon emissions of all activities related to scrapping and dismantling include the carbon emissions of dismantling construction and the carbon emissions of building materials and waste equipment recycling.

[0160] The total carbon emissions corresponding to the dismantling phase should be the sum of the carbon emissions from all stages of the dismantling phase, expressed as:

[0161] Ccj=Csg-Chs

[0162] Where Ccj represents the carbon emissions during the dismantling phase, Csg represents the carbon emissions during the dismantling construction, and Chs represents the carbon emissions from the recycling of building materials and waste equipment.

[0163] The carbon emissions from the recycling of building materials and scrap equipment are calculated as follows:

[0164]

[0165] Where ADi is the quantity of recycled materials, αi is the recycling rate of materials, F(hs-i) is the carbon emission factor of recycled materials, and i is the type of material.

[0166] It should be noted that accurately calculating the carbon emissions during the scrapping and dismantling phase helps to comprehensively assess the carbon emissions of a substation throughout its entire life cycle.

[0167] In this embodiment of the invention, step S400 includes the following sub-steps D1-D2;

[0168] In D1: The total carbon emissions corresponding to the first stage, the total carbon emissions of the second stage, and the total carbon emissions of the third stage are added together to obtain the total carbon emissions of the substation throughout its entire life cycle.

[0169] In D2: The annual carbon emission intensity of a substation throughout its entire life cycle is obtained by dividing the total carbon emissions of the substation over its entire life cycle by the product of the substation's building area and its building life.

[0170] Specifically, to calculate the total carbon emissions of a substation throughout its entire lifecycle, the total carbon emissions are obtained by adding the carbon emissions corresponding to the physicalization stage, the operation stage, and the decommissioning stage. This total carbon emissions are expressed as follows:

[0171] CLC=Cwh+Cyy+Ccj

[0172] Wherein, CLC is the total carbon emissions of the substation throughout its entire life cycle, Cwh is the carbon emissions during the physicochemical stage, Cyy is the carbon emissions during the substation operation stage, and Ccj is the carbon emissions during the scrapping and dismantling stage.

[0173] The carbon emission intensity of a substation throughout its entire life cycle is expressed as follows:

[0174] Ca = CLC / A

[0175] Where Ca is the carbon emission intensity per unit area of ​​the substation throughout its entire life cycle, CLC is the total carbon emissions of the substation throughout its entire life cycle, and A is the building area of ​​the substation.

[0176] The annual carbon emission intensity of a substation throughout its entire life cycle is expressed as:

[0177] CA = CLC / (A × L)

[0178] Where CA is the average annual carbon emission intensity of the substation throughout its entire life cycle, CLC is the total carbon emission of the substation throughout its entire life cycle, A is the building area of ​​the substation, and L is the building life of the substation.

[0179] The carbon emission factor in this invention is an indicator used to quantify the carbon emissions corresponding to a certain activity or a unit of energy consumption. It represents the carbon emissions per unit of activity level or unit of energy consumption and calculates the carbon emissions generated during energy conversion. The proportion is derived based on the differences in energy structure between regions.

[0180] Based on the standard emission factor database, the appropriate carbon emission factor is obtained by multiplying the standard emission value by a proportion.

[0181] It should be noted that the carbon emission accounting of substations throughout their entire life cycle is calculated from multiple dimensions. It comprehensively considers the carbon emission calculation methods for each stage of substation construction, operation and decommissioning. It can also calculate in detail the carbon emission reduction of renewable energy utilization during the operation stage, ensuring the accuracy of the calculation. At the same time, it provides a set of highly feasible carbon emission accounting methods for zero-carbon substations, which provides positive guidance for the construction, operation and promotion of zero-carbon substations.

[0182] The above is an illustrative scheme of a zero-carbon substation life-cycle carbon emission accounting method according to this embodiment. It should be noted that the technical solution of this zero-carbon substation life-cycle carbon emission accounting system belongs to the same concept as the technical solution of the aforementioned zero-carbon substation life-cycle carbon emission accounting method. Details not described in detail in the technical solution of the zero-carbon substation life-cycle carbon emission accounting system in this embodiment can be found in the description of the technical solution of the aforementioned zero-carbon substation life-cycle carbon emission accounting method.

[0183] The zero-carbon substation full life-cycle carbon emission accounting system in this embodiment includes:

[0184] The first calculation module is used to obtain the carbon emission parameters of the first stage and perform a first calculation on the total carbon emission of the first stage based on the carbon emission parameters of the first stage.

[0185] The second calculation module is used to obtain the carbon emission parameters of the second stage and perform a second calculation on the total carbon emissions of the second stage based on the carbon emission parameters of the second stage.

[0186] The third calculation module is used to obtain the carbon emission parameters of the third stage and perform a third calculation on the total carbon emission of the third stage based on the carbon emission parameters of the third stage.

[0187] The total emission calculation module is used to calculate the total carbon emissions of the substation throughout its entire life cycle based on the total carbon emissions of the first stage, the total carbon emissions of the second stage, and the total carbon emissions of the third stage.

[0188] This embodiment also provides a computer device applicable to the full life-cycle carbon emission accounting of zero-carbon substations, including:

[0189] The system includes a memory and a processor. The memory stores computer-executable instructions, and the processor executes these instructions to implement a zero-carbon substation lifecycle carbon emission accounting method as proposed in the above embodiments.

[0190] This embodiment also provides a storage medium storing a computer program that, when executed by a processor, implements a zero-carbon substation full life-cycle carbon emission accounting method as proposed in the above embodiments.

[0191] The storage medium proposed in this embodiment and the method for calculating carbon emissions throughout the life cycle of zero-carbon substations proposed in the above embodiments belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in the above embodiments, and this embodiment has the same beneficial effects as the above embodiments.

[0192] Based on the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computing device (which may be a personal computer, server, or network device, etc.) to execute the methods of the various embodiments of the present invention.

[0193] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for carbon emission accounting throughout the entire life cycle of a zero-carbon substation, characterized in that, include: Obtain the carbon emission parameters for the first stage, and perform a first calculation on the total carbon emissions corresponding to the first stage based on the carbon emission parameters for the first stage. Obtain the carbon emission parameters for the second stage, and perform a second calculation on the total carbon emissions for the second stage based on the carbon emission parameters for the second stage. Obtain the third-stage carbon emission parameters, and perform a third calculation on the total third-stage carbon emissions based on the third-stage carbon emission parameters; The total carbon emissions of the substation throughout its entire life cycle are calculated based on the total carbon emissions of the first stage, the total carbon emissions of the second stage, and the total carbon emissions of the third stage.

2. The method for calculating carbon emissions throughout the entire life cycle of a zero-carbon substation as described in claim 1, characterized in that, The first calculation includes: The carbon emissions generated by all activities related to the substation are calculated using the first-stage carbon emission parameters; The total carbon emissions from all activities are added together to obtain the total carbon emissions for the first phase.

3. The method for calculating carbon emissions throughout the entire life cycle of a zero-carbon substation as described in claim 2, characterized in that, The second calculation includes: The carbon emissions of all energy consumption and emission activities of the substation in the second phase are calculated using the carbon emission parameters of the second phase. The total carbon emissions for the second phase are obtained by adding up the carbon emissions from all energy consumption and emission activities.

4. The method for calculating carbon emissions throughout the entire life cycle of a zero-carbon substation as described in claim 3, characterized in that, The third calculation includes: The carbon emissions of all activities related to the decommissioning and dismantling of the substation in Phase III are calculated using Phase III carbon emission parameters. The total carbon emissions of the third phase are obtained by adding up the carbon emissions of all activities related to end-of-life dismantling.

5. The method for calculating carbon emissions throughout the entire life cycle of a zero-carbon substation as described in claim 2, characterized in that, The carbon emissions produced by all activities related to substations include: The carbon emissions from the production of building materials and substation components are obtained by adding the carbon emissions from the production of building materials and the carbon emissions from the production of substation components. The carbon emissions from the transportation of building materials and substation components are obtained by the consumption of each type of building material and substation component, the average transportation distance of each type of building material and substation component, and the carbon emission factor per unit weight of transportation distance under each transportation method. The carbon emissions of temporary construction facilities are obtained through energy consumption time, energy consumption density, area, and carbon emission factor.

6. The method for calculating carbon emissions throughout the entire life cycle of a zero-carbon substation as described in claim 3, characterized in that, Carbon emissions from all energy-consuming and emission-generating activities include: The carbon emissions related to the equipment were calculated using the carbon emission parameters of the sulfur hexafluoride equipment and the carbon emission parameters generated by the refrigerant used in the substation. Carbon emissions related to energy loss are calculated from carbon emission parameters of power transmission and distribution losses, carbon emission parameters of HVAC systems, carbon emission parameters of lighting and substation facilities and equipment, and carbon emission parameters of domestic hot water systems. Carbon emissions related to renewable energy and carbon sinks are calculated using carbon emission parameters of renewable energy systems and relevant parameters of carbon reduction from green lawns and turf.

7. A method for calculating the carbon emissions of a zero-carbon substation throughout its entire life cycle as described in claim 1 or 6, characterized in that, The total carbon emissions of a substation throughout its entire life cycle include: The total carbon emissions of the first stage, the second stage, and the third stage are added together to obtain the total carbon emissions of the substation throughout its entire life cycle. The annual carbon emission intensity of a substation throughout its entire life cycle is obtained by dividing the total carbon emissions of the substation by the product of its building area and its building life.

8. A zero-carbon substation life-cycle carbon emission accounting system, employing the zero-carbon substation life-cycle carbon emission accounting method as described in any one of claims 1-7, characterized in that, include: The first calculation module is used to obtain the carbon emission parameters of the first stage and perform a first calculation on the total carbon emission of the first stage based on the carbon emission parameters of the first stage. The second calculation module is used to obtain the carbon emission parameters of the second stage and perform a second calculation on the total carbon emissions of the second stage based on the carbon emission parameters of the second stage. The third calculation module is used to obtain the carbon emission parameters of the third stage and perform a third calculation on the total carbon emission of the third stage based on the carbon emission parameters of the third stage. The total emission calculation module is used to calculate the total carbon emissions of the substation throughout its entire life cycle based on the total carbon emissions of the first stage, the total carbon emissions of the second stage, and the total carbon emissions of the third stage.

9. A computer device, characterized in that, include: A memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the zero-carbon substation full life cycle carbon emission accounting method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which, when executed by a processor, implements the steps of a zero-carbon substation full life-cycle carbon emission accounting method according to any one of claims 1 to 7.

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