Power enterprise carbon asset accounting method and system

Abstract

The invention discloses a power enterprise carbon asset accounting method. The method comprises the steps of obtaining data information of a target power enterprise; performing carbon emission calculation on the target power enterprise; performing carbon asset management on the target power enterprise; and completing carbon asset accounting of the target power enterprise according to the carbon asset management result. The invention also discloses a system for realizing the power enterprise carbon asset accounting method. According to the invention, through obtaining, calculating, correcting, accounting, monitoring and the like of the carbon emission data of the power enterprise, the accounting of the carbon assets of the power enterprise is realized, the reliability is higher, and the accuracy is better.

Description

Technical Field

[0001] The present invention belongs to the field of electrical automation, and in particular relates to a carbon asset accounting method and system for an electric power enterprise. Background Art

[0002] With the development of economy and technology and the improvement of people's living standards, people are paying more and more attention to environmental issues. Carbon emission has become one of the focuses of people's attention. Power companies are one of the core entities of carbon emissions. Carbon emission has naturally become the focus of power companies.

[0003] Carbon asset accounting refers to the accounting activities of power companies on their own carbon assets. Accurate and reliable carbon asset accounting results can help power companies formulate development plans, power generation plans and carbon emission plans, thereby urging power companies to reduce carbon emissions.

[0004] However, the current carbon asset accounting scheme for the power system still adopts an annual accounting scheme; however, this type of annual accounting scheme cannot monitor carbon emissions and carbon assets in each quarter, and its reliability and accuracy are relatively poor. Summary of the invention

[0005] One of the purposes of the present invention is to provide a carbon asset accounting method for electric power enterprises with high reliability and good accuracy.

[0006] A second object of the present invention is to provide a system for implementing the carbon asset accounting method for power companies.

[0007] The carbon asset accounting method for electric power enterprises provided by the present invention comprises the following steps:

[0008] S1. Obtain data information of the target power company;

[0009] S2. Calculate the carbon emissions of the target power company based on the data information obtained in step S1;

[0010] S3. Perform carbon asset management on the target power company based on the carbon emission calculation results obtained in step S2;

[0011] S4. According to the carbon asset management results obtained in step S3, complete the carbon asset accounting of the target power company.

[0012] The step S1 of obtaining the data information of the target power enterprise specifically includes the following steps:

[0013] Obtain the carbon emission data of the target power company and classify it into direct emission data, indirect emission data and other emission data;

[0014] Direct emission data include the carbon emissions generated by the target power company's logistics department during operation; indirect emission data include the carbon emissions generated by the target power company's energy consumption during office hours; other emission data include the carbon emissions generated by the target power company during energy transportation.

[0015] Step S2, based on the data information obtained in step S1, calculates the carbon emissions of the target power company, and specifically includes the following steps:

[0016] The total carbon emissions of the target power companies are calculated using the following formula:

[0017] E=E 燃烧 +E SF6,泄露 +E 电 +E 热

[0018] Where E is the total carbon emissions of the target power company; E 燃烧 is the carbon emissions from burning fossil fuels, and n is the total number of fossil fuels, FC i is the consumption of the i-th fossil fuel, NCV i is the lower calorific value of the i-th fossil fuel, CC i is the carbon content per unit calorific value of the i-th fossil fuel, OF i is the carbon oxidation rate of the i-th fossil fuel, is the relative molecular mass ratio of carbon dioxide to carbon; E SF6,泄露 E is the carbon emission from leakage of equipment containing sulfur hexafluoride; 电 Carbon emissions generated by the use of electricity; E 热 Carbon emissions generated for purchased heat;

[0019] The following formula is used to calculate the carbon dioxide emissions from electric heating:

[0020] e 电 =(AD 电 -AD 绿电 )×EF 电

[0021] e 热 =AD 外购热 ×EF 热

[0022] Where e 电 The amount of carbon dioxide emissions generated by the use of electricity; AD 电 For power usage; AD 绿电 To use the purchased electricity through green electricity trading; EF 电 is the grid emission factor; e 热CO2 emissions from purchased heat; AD 外购热 is the purchased heat; EF 热 is the thermal emission factor;

[0023] The following formula is used to calculate the carbon dioxide emissions from power loss:

[0024] E 网损 =AD 网损 ×EF 电

[0025] AD 网损 =EL 供电 -EL 售电

[0026] EL 供电 =EL 上网 +EL 输入 -EL 输出

[0027] Where E 网损 AD is the carbon dioxide emissions caused by transmission and distribution losses; 网损 EF is the power loss in transmission and distribution; 电 is the grid emission factor; EL 供电 is the power supply; EL 售电 EL is the electricity sold; 上网 The power generated by the power plant; EL 输入 The amount of electricity imported from outside the region; EL 输出 The amount of electricity exported from outside the region.

[0028] Step S3, based on the carbon emission calculation result obtained in step S2, performs carbon asset management on the target power company, including the following steps:

[0029] A. According to the carbon emission calculation results obtained in step S2, carbon emission monitoring is performed on the target power company;

[0030] B. Setting a weight value for the carbon emission calculation result obtained in step S2;

[0031] C. Calculate the total carbon emissions of the target power company based on the set weight value;

[0032] D. Establish a data model for the association between each type of carbon emissions and quarter;

[0033] E. According to the associated data model established in step D, calculate the actual percentage of each type of carbon emissions in each quarter, and modify the set weight value according to the actual percentage data;

[0034] F. Compare the actual total carbon emissions data with the rated total carbon emissions data to complete the correction of carbon emissions.

[0035] The step S3 specifically includes the following steps:

[0036] A. Based on the carbon emission calculation results obtained in step S2, the target power company is monitored for carbon emissions:

[0037] If the target power company has excessive carbon emissions during operation, an alarm will be issued immediately;

[0038] B. Set the weight value for the carbon emission calculation result obtained in step S2:

[0039] When setting weight values, the weight value of direct emission data is the largest, and the weight value of other emission data is the smallest;

[0040] C. Calculate the total carbon emissions of the target power company based on the set weight value:

[0041] A weighted summation scheme is used to calculate the total carbon emissions of the target power company based on the set weight values;

[0042] D. Build a data model for the association between each type of carbon emissions and quarter:

[0043] The following formula is used as a multiple linear regression model to model the correlation data model between each type of carbon emissions and quarter:

[0044] Y t =β0+β1D1+β2D2+β3D3+β4D4+ε

[0045] Where Y t is the carbon emission in the t quarter; β0 is the first regression coefficient; β1 is the second regression coefficient; β2 is the third regression coefficient; β3 is the fourth regression coefficient; β4 is the fifth regression coefficient; ε is the error term; D1 is the dummy variable for the first season; D2 is the dummy variable for the second season; D3 is the dummy variable for the third season; D4 is the dummy variable for the fourth season;

[0046] The regression coefficients β0~β4 are obtained by solving the constructed normal equation, which is X T Xβ=X T Y, X are the design matrices containing independent variables, β is the vector of regression coefficients, and Y is the dependent variable vector;

[0047] E. According to the associated data model established in step D, calculate the actual percentage of each type of carbon emissions in each quarter, and modify the set weight value according to the actual percentage data:

[0048] Set the actual proportion data as the weight value to complete the correction;

[0049] F. Compare the actual carbon emission data with the rated carbon emission data to complete the carbon emission correction:

[0050] The actual total carbon emissions data is taken as the final carbon emissions data.

[0051] The present invention also provides a system for implementing the carbon asset accounting method of the power enterprise, comprising a data acquisition module, a carbon emission calculation module, a carbon asset management module and a carbon asset accounting module; the data acquisition module, the carbon emission calculation module, the carbon asset management module and the carbon asset accounting module are connected in series in sequence; the data acquisition module is used to acquire data information of the target power enterprise, and upload the data information to the carbon emission calculation module; the carbon emission calculation module is used to perform carbon emission calculation on the target power enterprise according to the received data information and the acquired data information, and upload the data information to the carbon asset management module; the carbon asset management module is used to perform carbon asset management on the target power enterprise according to the received data information and the obtained carbon emission calculation results, and upload the data information to the carbon asset accounting module; the carbon asset accounting module is used to complete the carbon asset accounting of the target power enterprise according to the received data information and the obtained carbon asset management results.

[0052] The electric power enterprise carbon asset accounting method and system provided by the present invention not only realizes the accounting of the electric power enterprise's carbon assets through the acquisition, calculation, correction, accounting and monitoring of the electric power enterprise's carbon emission data, but also has higher reliability and better accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 The figure is a schematic diagram of the method flow of the present invention.

[0054] Figure 2 Schematic diagram of the functional modules of the system of the present invention. DETAILED DESCRIPTION

[0055] like Figure 1 The method flow diagram of the method of the present invention is shown as follows: The carbon asset accounting method of the power enterprise disclosed in the present invention comprises the following steps:

[0056] S1. Obtain data information of the target power company; specifically includes the following steps:

[0057] Obtain the carbon emission data of the target power company and classify it into direct emission data, indirect emission data and other emission data;

[0058] Direct emission data include carbon emissions generated by the target power company's logistics department during operation, such as the energy consumption of the company's vehicles and canteens; indirect emission data include carbon emissions generated by the target power company's energy consumption during office hours, such as lighting and heating equipment in office buildings; other emission data include carbon emissions generated by the target power company during energy transportation;

[0059] S2. Calculate the carbon emissions of the target power company based on the data information obtained in step S1; specifically, the steps include:

[0060] The total carbon emissions of the target power companies are calculated using the following formula:

[0061] E=E 燃烧 +E SF6,泄露 +E 电 +E 热

[0062] Where E is the total carbon emissions of the target power company; E 燃烧 is the carbon emissions from burning fossil fuels, and n is the total number of fossil fuels, FC i is the consumption of the i-th fossil fuel, NCV i is the lower calorific value of the i-th fossil fuel, CC i is the carbon content per unit calorific value of the i-th fossil fuel, OF i is the carbon oxidation rate of the i-th fossil fuel, is the relative molecular mass ratio of carbon dioxide to carbon; E SF6,泄露 E is the carbon emission from leakage of equipment containing sulfur hexafluoride; 电 Carbon emissions generated by the use of electricity; E 热 Carbon emissions generated for purchased heat;

[0063] The following formula is used to calculate the carbon dioxide emissions from electric heating:

[0064] e 电 =(AD 电 -AD 绿电 )×EF 电

[0065] e 热 =AD 外购热 ×EF 热

[0066] Where e 电 The amount of carbon dioxide emissions generated by the use of electricity; AD 电 For power usage; AD 绿电 To use the purchased electricity through green electricity trading; EF 电is the grid emission factor; e 热 CO2 emissions from purchased heat; AD 外购热 is the purchased heat; EF 热 is the thermal emission factor;

[0067] The following formula is used to calculate the carbon dioxide emissions from power loss:

[0068] E 网损 =AD 网损 ×EF 电

[0069] AD 网损 =EL 供电 -EL 售电

[0070] EL 供电 =EL 上网 +EL 输入 -EL 输出

[0071] Where E 网损 AD is the carbon dioxide emissions caused by transmission and distribution losses; 网损 EF is the power loss in transmission and distribution; 电 is the grid emission factor; EL 供电 is the power supply; EL 售电 EL is the electricity sold; 上网 The power generated by the power plant; EL 输入 The amount of electricity imported from outside the region; EL 输出 The amount of electricity exported from outside the region;

[0072] S3. Based on the carbon emission calculation results obtained in step S2, carbon asset management is performed on the target power company; specifically, the steps include:

[0073] A. Based on the carbon emission calculation results obtained in step S2, the target power company is monitored for carbon emissions:

[0074] If the target power company has excessive carbon emissions during operation, an alarm will be issued immediately;

[0075] In specific implementation, an assessment threshold is set for each type of data, and when the carbon emissions of the type of data exceed the assessment threshold, a risk warning is sent to the user; since the target emissions of direct emission data, indirect emission data and other emission data are known, if you want to set the assessment threshold, you only need to set it according to a value slightly smaller than the target emission (slightly smaller to provide a certain redundancy); and when monitoring data, if the carbon emissions generated by any emission type exceed the assessment threshold, a warning will be issued, and the warning method can be various, such as computer pop-up windows, text messages, alarms and other reminder methods;

[0076] B. Set the weight value for the carbon emission calculation result obtained in step S2:

[0077] When setting weight values, the weight value of direct emission data is the largest, and the weight value of other emission data is the smallest;

[0078] When setting the weight value, it can be manually assessed and set, or it can be assessed and set using an existing model; and, since the basic operation of an enterprise is inseparable from the activities that generate direct emission data, the weight value of direct emission data is the largest; the proportion of indirect emission data is smaller than that of direct emission data but larger than that of other emission data, so when setting the weight, it can be reduced in order of direct emission data, indirect emission data, and other emission data;

[0079] C. Calculate the total carbon emissions of the target power company based on the set weight value:

[0080] A weighted summation scheme is used to calculate the total carbon emissions of the target power company based on the set weight values;

[0081] D. Build a data model for the association between each type of carbon emissions and quarter:

[0082] The following formula is used as a multiple linear regression model to model the correlation data model between each type of carbon emissions and quarter:

[0083] Y t =β0+β1D1+β2D2+β3D3+β4D4+ε

[0084] Where Y t is the carbon emission in the t quarter; β0 is the first regression coefficient; β1 is the second regression coefficient; β2 is the third regression coefficient; β3 is the fourth regression coefficient; β4 is the fifth regression coefficient; ε is the error term, that is, the random quantity in the multivariate linear regression function; D1 is the dummy variable for the first season; D2 is the dummy variable for the second season; D3 is the dummy variable for the third season; D4 is the dummy variable for the fourth season;

[0085] The regression coefficients β0~β4 are obtained by solving the constructed normal equation, which is X T Xβ=X T Y, X are the design matrices containing independent variables, β is the vector of regression coefficients, and Y is the dependent variable vector;

[0086] E. According to the associated data model established in step D, calculate the actual percentage of each type of carbon emissions in each quarter, and modify the set weight value according to the actual percentage data:

[0087] Set the actual proportion data as the weight value to complete the correction;

[0088] F. Compare the actual carbon emission data with the rated carbon emission data to complete the carbon emission correction:

[0089] The actual total carbon emissions data is used as the final carbon emissions data;

[0090] S4. According to the carbon asset management results obtained in step S3, the carbon asset accounting of the target power company is completed.

[0091] like Figure 2 The figure shows a schematic diagram of the functional modules of the system of the present invention: the system disclosed in the present invention for implementing the carbon asset accounting method of the power enterprise comprises a data acquisition module, a carbon emission calculation module, a carbon asset management module and a carbon asset accounting module; the data acquisition module, the carbon emission calculation module, the carbon asset management module and the carbon asset accounting module are connected in series in sequence; the data acquisition module is used to acquire the data information of the target power enterprise, and upload the data information to the carbon emission calculation module; the carbon emission calculation module is used to perform carbon emission calculation on the target power enterprise according to the received data information and the acquired data information, and upload the data information to the carbon asset management module; the carbon asset management module is used to perform carbon asset management on the target power enterprise according to the received data information and the obtained carbon emission calculation results, and upload the data information to the carbon asset accounting module; the carbon asset accounting module is used to complete the carbon asset accounting of the target power enterprise according to the received data information and the obtained carbon asset management results.

Claims

1. A method for calculating carbon assets of a power enterprise, comprising the following steps: S1. Obtain data information of the target power company; S2. Calculate the carbon emissions of the target power company based on the data information obtained in step S1; S3. Perform carbon asset management on the target power company based on the carbon emission calculation results obtained in step S2; S4. According to the carbon asset management results obtained in step S3, complete the carbon asset accounting of the target power company.

2. The carbon asset accounting method for power enterprises according to claim 1 is characterized in that The step S1 of obtaining the data information of the target power enterprise specifically includes the following steps: Obtain the carbon emission data of the target power company and classify it into direct emission data, indirect emission data and other emission data; Direct emission data include the carbon emissions generated by the target power company's logistics department during operation; indirect emission data include the carbon emissions generated by the target power company's energy consumption during office hours; other emission data include the carbon emissions generated by the target power company during energy transportation.

3. The carbon asset accounting method for electric power enterprises according to claim 2 is characterized in that Step S2, based on the data information obtained in step S1, calculates the carbon emissions of the target power company, and specifically includes the following steps: The following formula is used to calculate the total carbon emissions of the target power companies: E=E 燃烧 +E SF6,泄露 +E 电 +E 热 Where E is the total carbon emissions of the target power company; E 燃烧 is the carbon emissions from burning fossil fuels, and n is the total number of fossil fuels, FC i is the consumption of the i-th fossil fuel, NCV i is the lower calorific value of the i-th fossil fuel, CC i is the carbon content per unit calorific value of the i-th fossil fuel, OF i is the carbon oxidation rate of the i-th fossil fuel, is the relative molecular mass ratio of carbon dioxide to carbon; E SF6,泄露 E is the carbon emission from leakage of equipment containing sulfur hexafluoride; 电 Carbon emissions generated by the use of electricity; E 热 Carbon emissions generated for purchased heat; The following formula is used to calculate the carbon dioxide emissions from electric heating: And 电 =(AD 电 -TO 绿电 )×EF 电 And 热 =AD 外购热 ×EF 热 Where e 电 The amount of carbon dioxide emissions generated by the use of electricity; AD 电 For power usage; AD 绿电 To use the purchased electricity through green electricity trading; EF 电 is the grid emission factor; e 热 CO2 emissions from purchased heat; AD 外购热 is the purchased heat; EF 热 is the thermal emission factor; The following formula is used to calculate the carbon dioxide emissions from power loss: AND 网损 =AD 网损 ×EF 电 AD 网损 THE 供电 -HE 售电 HE 供电 THE 上网 +THE 输入 -HE 输出 Where E 网损 AD is the carbon dioxide emissions caused by transmission and distribution losses; 网损 EF is the power loss in transmission and distribution; 电 is the grid emission factor; EL 供电 is the power supply; EL 售电 EL is the electricity sold; 上网 The power generated by the power plant; EL 输入 The amount of electricity imported from outside the region; EL 输出 The amount of electricity exported from outside the region.

4. The carbon asset accounting method for electric power enterprises according to claim 3 is characterized in that Step S3, based on the carbon emission calculation result obtained in step S2, performs carbon asset management on the target power company, including the following steps: A. According to the carbon emission calculation results obtained in step S2, the target power company is monitored for carbon emissions; B. Setting a weight value for the carbon emission calculation result obtained in step S2; C. Calculate the total carbon emissions of the target power company based on the set weight value; D. Establish a data model for the association between each type of carbon emissions and quarter; E. According to the associated data model established in step D, the actual percentage of each type of carbon emissions in each quarter is calculated, and the set weight value is corrected according to the actual percentage data; F. Compare the actual total carbon emissions data with the rated total carbon emissions data to complete the correction of carbon emissions.

5. The carbon asset accounting method for electric power enterprises according to claim 4 is characterized in that The step S3 specifically includes the following steps: A. Based on the carbon emission calculation results obtained in step S2, the target power company is monitored for carbon emissions: If the target power company has excessive carbon emissions during operation, an alarm will be immediately issued; B. Set the weight value for the carbon emission calculation result obtained in step S2: When setting weight values, the weight value of direct emission data is the largest, and the weight value of other emission data is the smallest; C. Calculate the total carbon emissions of the target power company based on the set weight value: A weighted summation scheme is used to calculate the total carbon emissions of the target power company based on the set weight values; D. Build a data model for the association between each type of carbon emissions and quarter: The following formula is used as a multiple linear regression model to build a correlation data model between each type of carbon emissions and quarters: Y t =β0+β1D1+β2D2+β3D3+β4D4+ε Where Y t is the carbon emission in the t quarter; β0 is the first regression coefficient; β1 is the second regression coefficient; β2 is the third regression coefficient; β3 is the fourth regression coefficient; β4 is the fifth regression coefficient; ε is the error term; D1 is the dummy variable for the first season; D2 is the dummy variable for the second season; D3 is the dummy variable for the third season; D4 is the dummy variable for the fourth season; The regression coefficients β0~β4 are obtained by solving the constructed normal equation, which is X T Xβ=X T Y, X are the design matrices containing independent variables, β is the vector of regression coefficients, and Y is the dependent variable vector; E. According to the associated data model established in step D, calculate the actual percentage of each type of carbon emissions in each quarter, and modify the set weight value according to the actual percentage data: Set the actual proportion data as the weight value to complete the correction; F. Compare the actual carbon emission data with the rated carbon emission data to complete the carbon emission correction: The actual total carbon emissions data is taken as the final carbon emissions data.

6. A system for implementing the carbon asset accounting method for a power enterprise as claimed in any one of claims 1 to 5, characterized in that It includes a data acquisition module, a carbon emission calculation module, a carbon asset management module and a carbon asset accounting module; the data acquisition module, the carbon emission calculation module, the carbon asset management module and the carbon asset accounting module are connected in series in sequence; the data acquisition module is used to obtain the data information of the target power enterprise and upload the data information to the carbon emission calculation module; the carbon emission calculation module is used to calculate the carbon emissions of the target power enterprise according to the received data information and the acquired data information, and upload the data information to the carbon asset management module; The carbon asset management module is used to manage the carbon assets of the target power company based on the received data information and the obtained carbon emission calculation results, and upload the data information to the carbon asset accounting module; The carbon asset accounting module is used to complete the carbon asset accounting of the target power company based on the received data information and the obtained carbon asset management results.

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