CN114186805A - Garden carbon metering method considering real-time power supply components and electric energy to replace carbon reduction benefits - Google Patents

Garden carbon metering method considering real-time power supply components and electric energy to replace carbon reduction benefits Download PDF

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CN114186805A
CN114186805A CN202111390670.5A CN202111390670A CN114186805A CN 114186805 A CN114186805 A CN 114186805A CN 202111390670 A CN202111390670 A CN 202111390670A CN 114186805 A CN114186805 A CN 114186805A
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energy
carbon
park
power supply
carbon emission
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梁睿
黄宏旭
张小彤
王琛
张鸽
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
    • G06Q10/06393—Score-carding, benchmarking or key performance indicator [KPI] analysis
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/80—Management or planning
    • Y02P90/84—Greenhouse gas [GHG] management systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

The invention discloses a method for measuring carbon in a park by considering real-time power supply components and electric energy substitution carbon reduction benefits, which comprises the steps of inputting different types of energy carbon emission factors, park energy topological parameters, equipment parameters and other data; establishing an accurate carbon metering model of an energy system of the small-scale park; sensing the small-level output of renewable energy sources in the park and the requirements of electricity and heat loads; calculating the real-time power supply component ratio for the park; measuring the carbon emission of the power consumption of the garden under the condition of the small-scale real-time power supply components; measuring the carbon emission of the traditional fossil energy supply under the requirement of the heat load of the small-scale; measuring the carbon emission reduction benefit of the small-scale electric energy substitution park; and measuring the carbon emission of the park with the real-time power supply components and electric energy instead of the carbon reduction benefits. The method can realize accurate measurement of the energy carbon emission and the low-carbon benefit of electric energy substitution for the energy system in the park under the condition of real-time fluctuation of the renewable energy ratio at the power supply side.

Description

Garden carbon metering method considering real-time power supply components and electric energy to replace carbon reduction benefits
Technical Field
The invention relates to a method for measuring carbon emission of a park energy system, in particular to a method for measuring carbon emission of a park by considering real-time power supply components and electric energy substitution carbon reduction benefits.
Background
And (3) carbon emission measurement: the carbon emission measurement means that the average greenhouse gas emission generated during production, transportation and energy use is accurately and effectively measured. However, the existing carbon emission metering method calculates the carbon emission amount by fixing carbon emission factors on the source side and the energy utilization side roughly, does not consider the real-time change condition of the clean power supply components on the power supply side in the park-level energy system, does not consider the electric energy substitution and carbon reduction determination benefit, lacks a detailed and accurate park-level carbon emission metering method in the small-scale energy system, and cannot meet the requirements of energy conservation and emission reduction situation under the double-carbon target.
And (3) new energy distributed access: with the reduction of the power generation cost of renewable energy sources, a large number of renewable energy source power generation devices such as distributed photovoltaic power generation devices and fans are connected into an energy source system power grid in scenes such as an industrial park, and the carbon emission caused by energy utilization of the park energy source system is reduced. However, the distributed access power generation of renewable energy has the characteristics of intermittence, randomness, volatility and the like, so that the cleanness degree of energy consumption of the park fluctuates, the change of the cleanness degree of energy consumption caused by distributed access of new energy needs to be considered, and the energy carbon emission of the whole park is further accurately measured.
Electric energy replacement and carbon reduction benefits thereof: in the terminal energy consumption link, the electric energy is used for replacing stone energy consumption modes such as scattered coal, fuel oil and the like, such as electric heating, geothermal energy heat pumps, industrial electric boilers (kilns), electric automobiles and the like. Compared with the traditional fossil energy consumption mode, the carbon emission of the energy used for replacing the electric energy is reduced under the condition of the same load requirement, and the carbon emission reduction amount caused by the part is reduced to form carbon reduction benefit. The implementation of electric energy replacement has important significance for promoting the energy consumption revolution, implementing the national energy strategy and promoting the clean development of energy.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for measuring carbon emission of a park by considering real-time power supply components and electric energy instead of carbon reduction benefits aiming at the current situations of insufficient elements and inaccurate models of the method for measuring carbon emission of the park energy system. By establishing an accurate carbon emission metering method considering real-time power supply components and electric energy substitution carbon reduction benefits, analyzing electric energy components of each link of the electric power system under different specific energy utilization scenes, and adding carbon reduction contributions generated by different energy utilization behaviors such as electric energy substitution into the total carbon emission amount of the system, the accurate carbon emission amount of the regional energy system is calculated.
In order to achieve the technical purpose and achieve the technical effects, the invention is realized by the following technical scheme:
1) inputting carbon emission factors, park energy topological parameters, equipment parameters and the like of different types of energy to form a basic database, wherein the basic database comprises: carbon emission factors of combustion of fossil fuels such as coal, diesel oil and natural gas, carbon emission factors of power generation of an external power supply, carbon emission factors of power generation of renewable energy sources, topological network parameters of a park energy system, operation parameters of a coal-fired boiler and operation parameters of an air source heat pump;
2) according to the carbon emission characteristic of garden energy equipment, establish the accurate carbon measurement model of hour level garden energy system, specifically include: the method comprises the following steps of (1) a charge side carbon emission model, an electric automobile charging carbon emission model, a fossil fuel heating carbon emission model, a heat pump heating carbon emission model and an electric energy substitution carbon reduction model;
3) acquiring power generation output data, electric load demand data and heat load demand data of renewable energy sources in a park through meter devices configured on a renewable energy source power supply and park load equipment;
4) the real-time power supply component of the power consumption of the park is calculated on the basis of the small-scale output of the renewable energy in the park, and the specific calculation formula is as follows:
the electric energy sources of the parks in different time periods are different, and the power generation amount of the power supply side in the time period t (t is 1,2,3, … and 24) is as follows:
Figure BDA0003368719060000021
wherein n represents the type of clean power source, i is 1,2,3, …, n represents the ith clean energy source; m represents a fossil fuel power source type, j is 1,2,3, …, and m represents a jth fossil fuel energy source. Pc,i,tRepresenting the power generation amount of the ith cleaning power supply in the t period; pf,，j,tThe power generation amount of the jth fossil fuel power source in the t period is represented, and therefore the share of each power source component in the t period can be calculated.
The share of the ith clean power supply is as follows:
Figure BDA0003368719060000022
the j-th fossil fuel power source accounts for:
Figure BDA0003368719060000023
and has the following components:
Figure BDA0003368719060000024
based on the data, the energy consumption real-time power supply components in the park are calculated, and the following formula is shown:
Figure BDA0003368719060000025
5) carbon emissions from conventional fossil energy supplies are calculated based on hourly heat load demand data. Assuming that the thermal load of the park is mainly satisfied by the heat generated by the coal-fired boiler before the electric energy substitution is implemented, the carbon emission is mainly determined by the consumption of fossil fuel, and the relationship between the two is shown in the following formula:
Figure BDA0003368719060000026
in the formula, NCVjIs the average lower calorific value, FC, of the jth fossil fuelj,tConsumption of the jth fossil fuel at time t, EFjIs the carbon emission factor of the jth fossil fuel.
Considering heat loss of pipeline transmission, the conveying efficiency beta of an outdoor heat supply pipe network and the known heat load requirement of a park at t time period as Hl,tAnd then the heat supply amount required in the time period t is as follows:
Figure BDA0003368719060000031
according to the conservation of energy, the heat demand H from the parktDeducing the coal-fired quantity of the boiler as follows:
Figure BDA0003368719060000032
in the formula, FCCFB,tIs the coal consumption of the coal-fired boiler in the t period, NCVcoalIs the average lower calorific value, eta, of the standard coalCFBThe heat efficiency of the boiler is influenced by the type and the degree of freshness of the boiler, ADfuel,tThe total amount of outsourced fossil energy consumed by the heating equipment in the period t.
6) And calculating the carbon emission and the carbon reduction benefit of the heat supply of the park after the electric energy substitution is implemented based on the heat load demand data of the hour level. Assuming that the heat load of the park is mainly satisfied by the heat generated by the air-source heat pump after the electric energy substitution is implemented, the carbon emission depends on the consumption of the electric energy, and the relationship between the two is shown as follows:
Cpur,t＝Dpur,t×kc,i,t×EFi+Dpur,t×kf,i,t×EFj
in the formula, Dpur,tIs the total power consumption, EF, of the park at the time of tiCarbon emission factor, EF, corresponding to the ith clean energyjCarbon emission factor, k, corresponding to the jth fossil energyc,i,t、kf,j,tAre the ith clean power supply on the source side respectivelyElectricity and j-th fossil fuel power sources generate electricity.
According to the conservation of energy, the heat demand H from the parktDeducing the power consumption of the air source heat pump as follows:
Figure BDA0003368719060000033
in the formula, COPcorIs the actual heating coefficient, COP of the uniticyIn order to neglect the unit heating coefficient, COP after the defrosting influenceredThe COP attenuation rate of the unit in the defrosting process.
Since the heating effect of the air source heat pump is greatly influenced by the ambient temperature, the inlet and outlet temperatures and the heating performance coefficient of the unit are corrected by using the following empirical formula. When the outdoor ambient temperature is less than 7 ℃:
Figure BDA0003368719060000034
when the outdoor ambient temperature is greater than 7 ℃:
Figure BDA0003368719060000035
in the formula, TaThe measured outdoor temperature is used.
The carbon reduction benefits after the electric energy is replaced by the heat supply of the park are as follows:
Crd,t＝Cfuel,t-Cpur,t
7) on the basis, the amount of carbon emission of the electric power used in the garden in consideration of real-time power supply components under the small-scale is calculated, and the calculation is specifically shown as the following formula:
Cp,t＝Rp,t×Dpur,t×EFi+(1-Rp,t)×Dpur,t×EFj
in the formula, Rp,tReal-time energy supply component for the park at time t, Dpur,tIs the total quantity of electricity consumed by the park at time t, EFiCarbon emission factor, EF, corresponding to the ith clean energyjThe carbon emission factor corresponding to the jth fossil energy.
8) The carbon reduction benefit generated by electric energy substitution under the small-scale is calculated and can be expressed as:
Figure BDA0003368719060000041
in the formula, ADfuel,tThe total amount of outsourced fossil energy consumed by the heating equipment in the period t; k is a radical off,j,tIs the share of the jth fossil fuel power supply; EFjA carbon emission factor corresponding to the jth fossil energy; ADpur,tThe purchased electric power consumed by the heating equipment in the time period t; k is a radical ofc,i,tThe share of the ith clean power supply; EFiThe carbon emission factor corresponding to the ith clean energy.
9) Finally, accounting is carried out on the accurate carbon emission of the park considering real-time power supply components and electric energy to replace carbon reduction benefits, and the method specifically comprises the following steps:
Call,t＝Cp,t-Crd,t
in the formula, Call,tThe carbon emission for the whole garden is equivalent; cp,tConsidering the carbon emission of the electric load of the real-time power supply components for the park; crd,tIn order to consider the carbon emission reduction benefits before and after the electric energy replacement.
10) And the small-scale carbon emission measurement is circularly carried out according to the time scale requirement, and the overall accurate carbon measurement data of the park considering real-time power supply components and electric energy instead of carbon reduction benefits is output after the time scale requirement is met, so that the accurate observability and measurability of the carbon emission of the energy consumption of the park are realized.
The invention has the following advantages: compared with the prior art, the invention has the beneficial effects that: the existing regional energy system carbon emission metering method has insufficient elements and inaccurate models, and under the requirement of realizing a double-carbon target by assistance, the establishment of a scientific and accurate carbon emission metering method is an important basis for realizing carbon emission reduction, so that the campus carbon metering method considering real-time power supply components and electric energy substitution carbon reduction benefits is provided. The essence of the method is that an accurate carbon emission metering method considering real-time power supply components and electric energy substitution carbon reduction benefits is established, electric energy components of all links of the electric power system under different specific energy utilization scenes are analyzed, and carbon reduction contributions generated by different energy utilization behaviors such as electric energy substitution are added into the total carbon emission amount of the system, so that the accurate carbon emission amount of the regional energy system is calculated. The method solves the problems that the existing carbon emission metering method has extensive metering and does not consider user energy behaviors, and simultaneously plays the potential of the carbon emission accurate method in the aspects of optimization and scheduling of a regional energy system.
The purpose of the invention is as follows: the method can realize accurate measurement of the carbon emission of the energy used by the energy system in the park and the low-carbon benefit of electric energy substitution under the condition of real-time fluctuation of the proportion of the renewable energy at the power supply side, thereby accurately measuring the carbon emission of the energy used by the park.
Drawings
FIG. 1 is a graph of typical daily electrical load for a campus in accordance with the present invention;
FIG. 2 is a graph of typical daily thermal load for a campus in accordance with the present invention;
FIG. 3 is a plot of the proportions of the components of the park real-time power supply in the case of the present invention;
FIG. 4 is a graph of the carbon reduction benefits of a park after the park electrical energy has been replaced in accordance with the present invention;
figure 5 is a plot of campus carbon emissions before and after campus consideration of real-time power supply component ratios and power substitution in the present case.
Detailed Description
The invention is realized by the following specific embodiments in combination with the attached drawings:
1) inputting carbon emission factors, park energy topological parameters, equipment parameters and the like of different types of energy to form a basic database, wherein the data comprises: carbon emission factors of combustion of fossil fuels such as coal, diesel oil and natural gas, carbon emission factors of power generation of an external power supply, carbon emission factors of power generation of renewable energy sources, topological network parameters of a park energy system, operation parameters of a coal-fired boiler and operation parameters of an air source heat pump;
2) according to the carbon emission characteristic of garden energy equipment, establish the accurate carbon measurement model of hour level garden energy system, specifically include: the method comprises the following steps of (1) a charge side carbon emission model, an electric automobile charging carbon emission model, a fossil fuel heating carbon emission model, a heat pump heating carbon emission model and an electric energy substitution carbon reduction model;
3) acquiring power generation output data, electric load demand data and heat load demand data of renewable energy sources in a park through meter devices configured on a renewable energy source power supply and park load equipment;
4) the real-time power supply component of the power consumption of the park is calculated on the basis of the small-scale output of the renewable energy in the park, and the specific calculation formula is as follows:
the electric energy sources of the parks in different time periods are different, and the power generation amount of the power supply side in the time period t (t is 1,2,3, … and 24) is as follows:
Figure BDA0003368719060000051
wherein n represents the type of clean power source, i is 1,2,3, …, n represents the ith clean energy source; m represents a fossil fuel power source type, j is 1,2,3, …, and m represents a jth fossil fuel energy source. Pc,i,tRepresenting the power generation amount of the ith cleaning power supply in the t period; pf,j,tThe power generation amount of the jth fossil fuel power source in the t period is represented, and therefore the share of each power source component in the t period can be calculated.
The share of the ith clean power supply is as follows:
Figure BDA0003368719060000052
the j-th fossil fuel power source accounts for:
Figure BDA0003368719060000053
and has the following components:
Figure BDA0003368719060000054
based on the data, the energy consumption real-time power supply components in the park are calculated, and the following formula is shown:
Figure BDA0003368719060000055
5) carbon emissions from conventional fossil energy supplies are calculated based on hourly heat load demand data. Assuming that the thermal load of the park is mainly satisfied by the heat generated by the coal-fired boiler before the electric energy substitution is implemented, the carbon emission is mainly determined by the consumption of fossil fuel, and the relationship between the two is shown in the following formula:
Figure BDA0003368719060000056
in the formula, NCVjIs the average lower calorific value, FC, of the jth fossil fuelj,tConsumption of the jth fossil fuel at time t, EFjIs the carbon emission factor of the jth fossil fuel.
Considering heat loss of pipeline transmission, the conveying efficiency beta of an outdoor heat supply pipe network and the known heat load requirement of a park at t time period as Hl,tAnd then the heat supply amount required in the time period t is as follows:
Figure BDA0003368719060000057
according to the conservation of energy, the heat demand H from the parktDeducing the coal-fired quantity of the boiler as follows:
Figure BDA0003368719060000061
in the formula, FCCFB,tIs the coal consumption of the coal-fired boiler in the t period, NCVcoalIs the average lower calorific value, eta, of the standard coalCFBThe heat efficiency of the boiler depends on the type and the new type of the boilerInfluence of age, ADfuel,tThe total amount of outsourced fossil energy consumed by the heating equipment in the period t.
6) And calculating the carbon emission and the carbon reduction benefit of the heat supply of the park after the electric energy substitution is implemented based on the heat load demand data of the hour level. Assuming that the heat load of the park is mainly satisfied by the heat generated by the air-source heat pump after the electric energy substitution is implemented, the carbon emission depends on the consumption of the electric energy, and the relationship between the two is shown as follows:
Cpur,t＝Dpur,t×kc,i,t×EFi+Dpur,t×kf,i,t×EFj
in the formula, Dpur,tIs the total power consumption, EF, of the park at the time of tiCarbon emission factor, EF, corresponding to the ith clean energyjCarbon emission factor, k, corresponding to the jth fossil energyc,i,t、kf,j,tThe power generation of the ith clean power source and the power generation of the jth fossil fuel power source on the source side respectively account for the source side.
According to the conservation of energy, the heat demand H from the parktDeducing the power consumption of the air source heat pump as follows:
Figure BDA0003368719060000062
in the formula, COPcorIs the actual heating coefficient, COP of the uniticyIn order to neglect the unit heating coefficient, COP after the defrosting influenceredThe COP attenuation rate of the unit in the defrosting process.
Since the heating effect of the air source heat pump is greatly influenced by the ambient temperature, the inlet and outlet temperatures and the heating performance coefficient of the unit are corrected by using the following empirical formula. When the outdoor ambient temperature is less than 7 ℃:
Figure BDA0003368719060000063
when the outdoor ambient temperature is greater than 7 ℃:
Figure BDA0003368719060000064
in the formula, TaThe measured outdoor temperature is used.
The carbon reduction benefits after the electric energy is replaced by the heat supply of the park are as follows:
Crd,t＝Cfuel,i-Cpur,t
7) on the basis, the amount of carbon emission of the electric power used in the garden in consideration of real-time power supply components under the small-scale is calculated, and the calculation is specifically shown as the following formula:
Cp,t＝Rp,t×Dpur,t×EFi+(1-Rp,t)×Dpur,t×EFj
in the formula, Rp,tReal-time energy supply component for the park at time t, Dpur,tIs the total quantity of electricity consumed by the park at time t, EFiCarbon emission factor, EF, corresponding to the ith clean energyjThe carbon emission factor corresponding to the jth fossil energy.
8) The carbon reduction benefit generated by electric energy substitution under the small-scale is calculated and can be expressed as:
Figure BDA0003368719060000065
in the formula, ADfuel,tThe total amount of outsourced fossil energy consumed by the heating equipment in the period t; k is a radical off,j,tIs the share of the jth fossil fuel power supply; EFjA carbon emission factor corresponding to the jth fossil energy; ADpur,tThe purchased electric power consumed by the heating equipment in the time period t; k is a radical ofc,i,tThe share of the ith clean power supply; EFiThe carbon emission factor corresponding to the ith clean energy.
9) Finally, accounting is carried out on the accurate carbon emission of the park considering real-time power supply components and electric energy to replace carbon reduction benefits, and the method specifically comprises the following steps:
Call,t＝Cp,t-Crd,t
in the formula, Call,tThe carbon emission for the whole garden is equivalent; cp,tConsidering the carbon emission of the electric load of the real-time power supply components for the park; crd,tIn order to consider the carbon emission reduction benefits before and after the electric energy replacement.
10) And the small-scale carbon emission measurement is circularly carried out according to the time scale requirement, and the overall accurate carbon measurement data of the park considering real-time power supply components and electric energy instead of carbon reduction benefits is output after the time scale requirement is met, so that the accurate observability and measurability of the carbon emission of the energy consumption of the park are realized.
Simulation verification:
in order to verify the effectiveness and the practicability of the invention, an hourly park accurate carbon metering mathematical model is established in MATLAB, and the accurate carbon metering of the electricity-heat comprehensive energy system is carried out in a selected park. Based on the accurate renewable energy power generation prediction, the park electricity and the heat load prediction before the day, as shown in fig. 1 and fig. 2, the hour-level data of the electricity and the heat load are input. As shown in fig. 3, the carbon emission amount of the campus is accurately measured time by considering the real-time power supply component ratio and integrating different carbon emission factors caused by different power supply components per hour. The model considers the carbon emission of the whole system after the existing gas boiler supplies heat, and compares the carbon emission with the system carbon emission of the heat pump heat supply after the electric energy is replaced, the statistical condition of the carbon reduction benefit of the electric energy replacement is shown in figure 4, and finally the result of the carbon emission measurement of the whole park considering the real-time power supply proportion and the electric energy replacement carbon reduction benefit is shown in figure 5.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (3)

1. A method for measuring carbon in a campus taking into account real-time power supply composition and carbon reduction benefits replaced by electric energy, the method comprising the steps of:
1) inputting carbon emission factors of different types of energy, topological parameters of a park energy system and equipment operation parameters to form a basic data set;
2) constructing a real-time carbon metering model of an energy system of the small-scale park;
3) acquiring power generation output data, electric load demand data and heat load demand data of renewable energy sources in a park through meter devices configured on a renewable energy source power supply and park load equipment;
4) based on renewable energy power generation output data and external power grid real-time electricity purchasing data, calculating energy utilization real-time power supply components in a park:
Figure FDA0003368719050000011
in the formula, Pc,i,tGenerated energy of clean energy in t period, Pf,i,tFossil energy power generation for a period t;
5) and (3) calculating the power consumption carbon emission of the real-time power supply composition park under the small-scale, and expressing as follows:
Cp,t＝Rp,t×Dall,t×kc,i,t×EFi+(1-Rp,t)×Dall,t×kc,i,t×EFj
in the formula, Dpur,tTotal amount of electricity consumed by electrical loads in the park, EFiCarbon emission factor, EF, corresponding to the ith clean energyjA carbon emission factor corresponding to the jth fossil energy;
6) the electric energy substitution carbon reduction benefit under the calculation small-scale can be expressed as:
Figure FDA0003368719050000012
in the formula, ADfuel,tConsumption of outsourcing fossil energy, k, for consumption by heating installations during a period of tf,j,tIs the share of the jth fossil fuel power supply, EFjCarbon emission factor, AD, corresponding to jth fossil energypur,tPurchased electric power quantity k consumed by heating equipment for t periodc,i,iIs the fraction of the ith clean power supply, EFiThe carbon emission factor corresponding to the ith clean energy;
7) the final accounting considers the accurate carbon emission of the park with real-time power supply components and electric energy replacing carbon reduction benefits as follows:
Call,t＝Cp,t-Crd,t
in the formula, Call,tFor the entire park with equivalent carbon emissions, Cp,tCarbon emission of electrical load considering real-time power supply composition for park, Crd,tIn order to consider the carbon emission reduction benefits before and after electric energy substitution;
8) and the small-scale carbon emission measurement is circularly carried out according to the time scale requirement, and the overall accurate carbon measurement data of the park considering real-time power supply components and electric energy instead of carbon reduction benefits is output after the time scale requirement is met, so that the accurate observability and measurability of the carbon emission of the energy consumption of the park are realized.
2. The method of claim 1 for campus carbon metering considering real-time power supply composition and power replacement carbon reduction benefits, comprising: step 2), wherein the total power generation amount of the power supply side in the t period (t is 1,2,3, …,24) is composed of the clean power supply and the fossil fuel power supply, and is specifically represented as:
Figure FDA0003368719050000021
wherein n represents a kind of a clean power source, i is 1,2,3, …, n represents an ith kind of clean power source; m represents a fossil fuel power source type, j is 1,2,3, …, m represents a jth fossil fuel power source, Pc,i,tRepresents the power generation amount, P, of the ith clean power supply in the t periodf,，j,tRepresents the power generation amount of the jth fossil fuel power source in the t period, thereby calculating the share k of each power source component in the t periodc,i,tAnd kf,j,t；
The carbon emissions produced by the load side electricity usage behavior are expressed as:
Figure FDA0003368719050000022
in the formula, ADpur,tFor the purchased electricity quantity consumed during the period t, EFiCarbon emission factor, EF, corresponding to the ith clean energyjA carbon emission factor corresponding to the jth fossil energy;
the carbon emissions on the load side generated with heat demand can be expressed as:
Ht＝Hl,t/β
CO produced by fossil fuel combustion during period t2Discharging
Figure FDA0003368719050000023
In the formula, NCVjIs the average lower calorific value, FC, of the jth fossil fuelj,tConsumption of the jth fossil fuel at time t, EFjA carbon emission factor for a jth fossil fuel, j being a fossil fuel type;
establishing a heat pump unit carbon reduction benefit metering model:
before electric energy substitution is implemented, the heat load demand of the park is met by a coal-fired and gas-fired boiler unit
Ht＝HGFB,t+HCFB,t
CO production using fossil energy2Discharging
Figure FDA0003368719050000024
In the formula, ADfuel,tConsumption of outsourcing fossil energy, k, for consumption by heating installations during a period of tf,j,tIs the share of the jth fossil fuel power supply, EFjA carbon emission factor corresponding to the jth fossil energy;
after the electric energy replacement is implemented, the heat load of the park is met by the heat pump, the carbon emission in the heat supply process is changed from the generation of burning fossil fuel into the generation of electric power, and the heat supply quantity required at the load node l in the period of t is assumed to be Ht
Ht＝HASHP,t+HWSHP,t+HGSHP,t
CO produced using electrical energy2Discharging
Figure FDA0003368719050000025
In the formula, ADpur,tPurchased electric power quantity k consumed by heating equipment for t periodc,i,tIs the fraction of the ith clean power supply, EFiThe carbon emission factor corresponding to the ith clean energy is obtained, so the carbon reduction benefits before and after the electric energy substitution are as follows:
Crd,t＝Cfuel,t-Cpur,t
3. the method of claim 1 for campus carbon metering considering real-time power supply composition and power replacement carbon reduction benefits, comprising: the basic data set in the step 1) comprises coal carbon, diesel oil, carbon emission factors of natural gas combustion, carbon emission factors of external power generation, carbon emission factors of renewable energy power generation, topological network parameters of a park energy system, charge and discharge and energy consumption parameters of an electric automobile, operation parameters of a gas turbine, operation parameters of a ground source heat pump, operation parameters of a water source heat pump and operation parameters of an air source heat pump.
CN202111390670.5A 2021-11-23 2021-11-23 Garden carbon metering method considering real-time power supply components and electric energy to replace carbon reduction benefits Pending CN114186805A (en)

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CN115238246A (en) * 2022-09-23 2022-10-25 国网浙江省电力有限公司宁波市北仑区供电公司 Park energy low-carbon quantification method and device, computer equipment and storage medium
CN115238597A (en) * 2022-09-23 2022-10-25 国网浙江省电力有限公司宁波供电公司 Construction method of source network carbon-loaded emission model of park level comprehensive energy system
CN117371650A (en) * 2023-10-09 2024-01-09 国网江苏省电力有限公司连云港供电分公司 Accurate carbon metering method and system for power distribution network considering load side electric energy substitution

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115238246A (en) * 2022-09-23 2022-10-25 国网浙江省电力有限公司宁波市北仑区供电公司 Park energy low-carbon quantification method and device, computer equipment and storage medium
CN115238597A (en) * 2022-09-23 2022-10-25 国网浙江省电力有限公司宁波供电公司 Construction method of source network carbon-loaded emission model of park level comprehensive energy system
CN115238246B (en) * 2022-09-23 2023-02-17 国网浙江省电力有限公司宁波市北仑区供电公司 Park energy low-carbon quantification method and device, computer equipment and storage medium
CN117371650A (en) * 2023-10-09 2024-01-09 国网江苏省电力有限公司连云港供电分公司 Accurate carbon metering method and system for power distribution network considering load side electric energy substitution

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