Method and device for acquiring power generation carbon emission coefficient in power industry

Abstract

The invention discloses a method and a device for acquiring a power generation carbon emission coefficient in the power industry, and belongs to the technical field of carbon emission accounting and analysis in the power industry. According to the method, the electric power carbon emission accounting range is determined according to the characteristics of the electric power industry; furthermore, the generating capacity data and the energy consumption data of the power industry are collected in a defined range, and energy sources comprise raw coal, coke, crude oil, fuel oil, gasoline, kerosene, diesel oil, liquefied petroleum gas, refinery dry gas and the like; calculating the carbon emission generated by energy consumption in the power production process of the power industry by using a carbon emission coefficient method; and finally, the power generation carbon emission coefficient is calculated and analyzed, so that the carbon emission condition of the regional power industry can be known more conveniently, the carbon emission characteristics of the power industry can be researched, support is provided for making a low-carbon development strategy, and energy conservation and consumption reduction of thermal power generation in the region can be promoted.

Description

Technical Field

[0001] The present invention relates to a method and a device for obtaining the carbon emission coefficient of power generation in the electric power industry, belonging to the technical field of carbon emission accounting and analysis in the electric power industry. Background Art

[0002] Regional carbon emission accounting is the basis for carrying out carbon emission control and formulating carbon emission policies. As the main source of carbon emissions, the power industry plays an important role in regional carbon emission accounting. Therefore, it is particularly important to measure and analyze the carbon emissions of the regional power industry.

[0003] Currently, the more commonly used carbon emission calculations are the actual measurement method and the input-output method. The actual measurement method refers to direct measurement on site using relevant measurement technology and measuring instruments, but it is difficult to achieve in the power industry; the input-output method refers to the carbon contained in all resources and materials invested in the initial state is equal to the carbon finally generated, but for high-carbon emission industries, the workload of collecting relevant data is large. In addition, although the input-output method is an effective means of assessing carbon emissions at the macro level, it has limitations in terms of data update frequency, accuracy and the specific application of accounting results.

[0004] Therefore, in order to improve the accuracy and practicality of carbon emission accounting, further research is needed on other accounting methods to provide technical options to help power industry management departments make timely decisions and controls. Summary of the invention

[0006] The present invention provides a method and device for obtaining the carbon emission coefficient of power generation in the electric power industry, which is used to solve the problems of complex carbon emission accounting methods in the existing electric power industry, difficult practical operations, and lack of data. It can more accurately calculate the carbon emissions of the regional electric power industry and further obtain the carbon emission coefficient of power generation, thereby providing assistance for relevant industry management departments to make timely decisions to control carbon emission levels.

[0007] The technical solution of the present invention is:

[0008] According to a first aspect of the present invention, a method for obtaining a carbon emission coefficient of power generation in the power industry is provided, comprising:

[0009] Define the scope of electricity carbon emissions accounting based on the terminal energy consumption of the power industry;

[0010] According to the scope of electricity carbon emission accounting, collect the energy data required within the corresponding scope;

[0011] Establish a carbon emissions accounting model for electricity to calculate carbon emissions generated by energy consumption during electricity production;

[0012] Summarize and collect the required energy data within the corresponding scope and the carbon emissions generated by the energy consumption in the electricity production process, calculate the carbon emission coefficient of power generation and analyze it.

[0013] Defining the scope of electricity carbon emission accounting based on the terminal energy consumption of the power industry includes: determining the scope of electricity carbon emission accounting as thermal power generation through analysis of the terminal energy consumption of the power industry.

[0014] The energy data required within the corresponding scope is collected based on the scope of electricity carbon emission accounting, including: collecting the thermal power generation of the power industry, the total power generation of the whole society and energy consumption data within the preset period of time in the relevant area according to the defined scope of electricity carbon emission accounting; subtracting the thermal power generation from the total power generation of the whole society to obtain the non-thermal power generation.

[0015] Energy sources that generate carbon emissions during electricity production include raw coal, coke, crude oil, fuel oil, gasoline, kerosene, diesel, liquefied petroleum gas, refinery dry gas, and oilfield natural gas.

[0016] The carbon emissions accounting model for electricity is established to calculate the carbon emissions generated by energy consumption in the electricity production process, including: obtaining the carbon emission coefficients generated by the combustion of various energy sources; calculating the carbon emissions caused by the consumption of each energy source in the electricity production process within a defined range based on the carbon emission coefficient of each energy source and the consumption of each energy source; summing up the carbon emissions caused by the consumption of each energy source and multiplying it by the thermal power generation to obtain the carbon emissions of energy consumption in a preset time period in the electricity production process.

[0017] By summing up the carbon emissions caused by the consumption of various energy sources and multiplying it by the thermal power generation, the carbon emissions of energy consumption in a preset time period during the power production process can be obtained, and the expression is:

[0018]

[0019] Among them, C E is the carbon emission from energy consumption in the electricity production process, that is, the carbon emission from thermal power generation, in kg; i is the type of energy used in electricity production; f i is the carbon emission coefficient of the i-th energy source, in kg / kgce, i.e., carbon emission per kilogram of standard coal; r i is the consumption of the ith energy source to produce unit electricity, in kgce / (kW·h), and all types of energy are converted into standard coal consumption; E is thermal power generation, in kW·h.

[0020] The power generation carbon emission coefficient includes the total power generation carbon emission coefficient and the thermal power generation carbon emission coefficient, and the expression is as follows:

[0021]

[0022] According to a second aspect of the present invention, there is provided a device for obtaining a carbon emission coefficient of power generation in the power industry, comprising:

[0023] The first module is used to collect the energy data required within the corresponding scope according to the scope of electricity carbon emission accounting;

[0024] The second module is used to establish a carbon emission accounting model for electricity, which calculates the carbon emissions generated by energy consumption during electricity production;

[0025] The third module is used to collect and summarize the energy data required within the corresponding scope and calculate the carbon emissions generated by the energy consumption in the electricity production process, calculate the carbon emission coefficient of power generation and analyze it.

[0026] The beneficial effects of the present invention are:

[0027] The present invention determines the scope of carbon emission accounting for electricity according to the characteristics of the electric power industry; further, collects power generation data and energy consumption data of the electric power industry within the defined scope, wherein energy includes raw coal, coke, crude oil, fuel oil, gasoline, kerosene, diesel, liquefied petroleum gas, refinery dry gas, etc.; and then uses the carbon emission coefficient method to calculate the carbon emissions generated by energy consumption in the power production process of the electric power industry; finally, calculates and analyzes the carbon emission coefficient of power generation, which can more conveniently understand the carbon emissions of the regional electric power industry, study the characteristics of carbon emissions in the electric power industry, provide support for the formulation of a low-carbon development strategy, and help promote energy conservation and consumption reduction in thermal power generation in the region. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a flow chart of the present invention;

[0029] Figure 2 The carbon emission of electricity production energy consumption in Yunnan Province from 2005 to 2014 is provided according to the embodiment of the present invention;

[0030] Figure 3 It is the carbon emission coefficient of power generation in Yunnan Province from 2005 to 2014 provided according to the embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other arbitrarily without conflict.

[0032] Example 1: Figure 1-3As shown, according to the first aspect of an embodiment of the present invention, a method for obtaining the carbon emission coefficient of power generation in the power industry is provided, including: defining the scope of power carbon emission accounting according to the terminal energy consumption of the power industry, so as to better carry out carbon emission accounting in the production process of the power industry; collecting the energy data required within the corresponding scope according to the power carbon emission accounting scope; establishing a power carbon emission accounting model to calculate the carbon emissions generated by the energy consumed in the power production process; summarizing the collected energy data required within the corresponding scope and the calculated carbon emissions generated by the energy consumed in the power production process, calculating the power generation carbon emission coefficient and analyzing it.

[0033] Furthermore, the scope of electricity carbon emission accounting is defined based on the terminal energy consumption of the power industry, including: by analyzing the terminal energy consumption of the power industry, the scope of electricity carbon emission accounting is determined to be thermal power generation. Specifically, terminal energy consumption mainly comes from hydropower generation, thermal power generation and renewable energy generation. It is generally believed that no carbon emissions will be generated during hydropower generation, and new energy energy consumption and carbon emissions only occur in the production of components and wind turbines during deployment. Thermal power generation consumes energy and produces carbon dioxide; therefore, for the power industry, only the carbon emissions of thermal power generation in the power production process are considered, and the carbon emissions caused by hydropower generation and other renewable energy generation processes are not considered, so as to determine the scope of electricity carbon emission accounting.

[0034] Furthermore, based on the scope of electricity carbon emission accounting, the energy data required within the corresponding scope is collected, including: according to the defined scope of electricity carbon emission accounting, the thermal power generation of the power industry, the total power generation of the whole society and the energy consumption data within the preset period of the relevant area are collected; the thermal power generation is subtracted from the total power generation of the whole society to obtain the non-thermal power generation; the energy sources that generate carbon emissions in the process of electricity production include raw coal, coke, crude oil, fuel oil, gasoline, kerosene, diesel, liquefied petroleum gas, refinery dry gas and oilfield natural gas.

[0035] Furthermore, the establishment of an electricity carbon emissions accounting model calculates the carbon emissions generated by energy consumption in the electricity production process, including: obtaining carbon emission coefficients generated by the combustion of various energy sources. These coefficients can be obtained through national and international standards, research reports of scientific research institutions or public data of energy companies. The carbon emission coefficient is usually expressed as carbon emissions generated per unit of energy consumption; based on the carbon emission coefficient of each energy and the consumption of each energy, the carbon emissions caused by the consumption of each energy in the electricity production process within the defined range are calculated; the carbon emissions caused by the consumption of each energy source are added up and multiplied by the thermal power generation to obtain the carbon emissions of energy consumption in a preset time period in the electricity production process.

[0036] Furthermore, the carbon emissions from energy consumption in a preset time period during the power production process can be obtained by summing up the carbon emissions from the consumption of various energy sources and multiplying it by the thermal power generation. The expression is:

[0037]

[0038] Among them, C E is the carbon emission from energy consumption in the electricity production process, that is, the carbon emission from thermal power generation, in kg; i is the type of energy used in electricity production; f i is the carbon emission coefficient of the i-th energy source, in kg / kgce, i.e., carbon emission per kilogram of standard coal; r i is the consumption of the ith energy source to produce unit electricity, in kgce / (kW·h), and all types of energy are converted into standard coal consumption; E is thermal power generation, in kW·h.

[0039] Furthermore, the power generation carbon emission coefficient includes the total power generation carbon emission coefficient and the thermal power generation carbon emission coefficient, and the expression is as follows:

[0040]

[0041] According to a second aspect of an embodiment of the present invention, there is provided a device for obtaining the carbon emission coefficient of power generation in the power industry, comprising: a first module for collecting energy data required within a corresponding scope according to the power carbon emission accounting scope; a second module for establishing a power carbon emission accounting model to calculate the carbon emissions generated by energy consumption in the power production process; and a third module for summarizing the collected energy data required within the corresponding scope and the calculated carbon emissions generated by energy consumption in the power production process, calculating the power generation carbon emission coefficient and analyzing it.

[0042] For example, the total electricity consumption of the power industry in a certain region is collected. Taking Yunnan Province as an example, the thermal power generation of the power industry in Yunnan Province from 2005 to 2014 and the total power generation of the whole society are collected. The power production situation is shown in Table 1. In addition, the consumption data of energy such as raw coal, coke, crude oil, fuel oil, gasoline, kerosene, diesel, liquefied petroleum gas, refinery dry gas, and oilfield natural gas in the region are collected.

[0043] Table 1 Electricity production in Yunnan Province from 2005 to 2014 Unit: billion kWh

[0044] years 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Total power generation in society 605 757 905 1040 1174 1364 1555 1748 2149 2549.91 Thermal power generation 273 405 474 418 548 546 536 480 479 391.41 Non-thermal power generation 332 352 431 622 626 818 1019 1268 1670 2158.5

[0045] In the electricity production process of each region, the proportion of thermal power generation is different, and the proportion of thermal power generation in different years is also different. According to the use of thermal power generation energy in each year of the research object, the carbon emissions of energy consumption from 2005 to 2014 are calculated. The carbon emission coefficients of various energy sources adopt the coefficients given in China's "Guidelines for the Preparation of Provincial Greenhouse Gas Inventories", as shown in Table 2.

[0046] Table 2 Carbon emission coefficients of various energy sources

[0047]

[0048] According to the defined scope and based on the electricity carbon emissions accounting model, the carbon emissions of energy consumption in the preset time period during the electricity production process are obtained, and then the total power generation carbon emission coefficient and the thermal power generation carbon emission coefficient are calculated, and the power generation carbon emission coefficient is analyzed.

[0049] like Figure 2 As shown, the embodiment of the present application provides the carbon emissions from energy consumption in electricity production in Yunnan Province from 2005 to 2014. It can be seen from the figure that the overall carbon emissions from energy consumption in Yunnan Province show a continuous growth trend. The low-carbon transformation of the power industry has important practical significance for controlling carbon emissions in Yunnan Province.

[0050] like Figure 3 As shown, the embodiment of the present application provides the carbon emission coefficient of power generation in Yunnan Province from 2005 to 2014. It can be seen from the figure that the carbon emission coefficient of thermal power generation in Yunnan Province is fluctuating, and the carbon emission coefficient of total power generation is on a downward trend. The increase in the proportion of non-thermal power generation has caused the carbon emission coefficient of total power generation in Yunnan Province to decrease. Therefore, strengthening the development and utilization of non-fossil energy will be conducive to controlling the level of carbon emissions.

[0051] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described above, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A method for obtaining carbon emission coefficient of power generation in the power industry, characterized in that: include: Define the scope of electricity carbon emissions accounting based on the terminal energy consumption of the power industry; According to the scope of electricity carbon emission accounting, collect the energy data required within the corresponding scope; Establish a carbon emissions accounting model for electricity to calculate carbon emissions generated by energy consumption during electricity production; Summarize and collect the required energy data within the corresponding scope and the carbon emissions generated by the energy consumption in the electricity production process, calculate the carbon emission coefficient of power generation and analyze it.

2. The method for obtaining carbon emission coefficient of power generation in the power industry according to claim 1 is characterized in that: Defining the scope of electricity carbon emission accounting based on the terminal energy consumption of the power industry includes: determining the scope of electricity carbon emission accounting as thermal power generation through analysis of the terminal energy consumption of the power industry.

3. The method for obtaining carbon emission coefficient of power generation in the power industry according to claim 1 is characterized in that: The energy data required within the corresponding scope is collected based on the scope of electricity carbon emission accounting, including: collecting the thermal power generation of the power industry, the total power generation of the whole society and energy consumption data within the preset period of time in the relevant area according to the defined scope of electricity carbon emission accounting; subtracting the thermal power generation from the total power generation of the whole society to obtain the non-thermal power generation.

4. The method for obtaining carbon emission coefficient of power generation in the power industry according to claim 3 is characterized in that: Energy sources that generate carbon emissions during electricity production include raw coal, coke, crude oil, fuel oil, gasoline, kerosene, diesel, liquefied petroleum gas, refinery dry gas, and oilfield natural gas.

5. The method for obtaining carbon emission coefficient of power generation in the power industry according to claim 1 is characterized in that: The carbon emissions accounting model for electricity is established to calculate the carbon emissions generated by energy consumption in the electricity production process, including: obtaining the carbon emission coefficients generated by the combustion of various energy sources; calculating the carbon emissions caused by the consumption of each energy source in the electricity production process within a defined range based on the carbon emission coefficient of each energy source and the consumption of each energy source; summing up the carbon emissions caused by the consumption of each energy source and multiplying it by the thermal power generation to obtain the carbon emissions of energy consumption in a preset time period in the electricity production process.

6. The method for obtaining carbon emission coefficient of power generation in the power industry according to claim 5 is characterized in that: By summing up the carbon emissions caused by the consumption of various energy sources and multiplying it by the thermal power generation, the carbon emissions of energy consumption in a preset time period during the power production process can be obtained, and the expression is: Among them, C E is the carbon emission from energy consumption in the electricity production process, that is, the carbon emission from thermal power generation, in kg; i is the type of energy used in electricity production; f i is the carbon emission coefficient of the i-th energy source, in kg / kgce, i.e., carbon emission per kilogram of standard coal; r i is the consumption of the ith energy source to produce unit electricity, in kgce / (kW·h), and all types of energy are converted into standard coal consumption; E is thermal power generation, in kW·h.

7. The method for obtaining carbon emission coefficient of power generation in the power industry according to claim 1, characterized in that: The power generation carbon emission coefficient includes the total power generation carbon emission coefficient and the thermal power generation carbon emission coefficient, and the expression is as follows:

8. A device for obtaining carbon emission coefficient of power generation in the power industry, characterized in that: include: The first module is used to collect the energy data required within the corresponding scope according to the scope of electricity carbon emission accounting; The second module is used to establish a carbon emission accounting model for electricity, which calculates the carbon emissions generated by energy consumption during electricity production; The third module is used to collect and summarize the energy data required within the corresponding scope and calculate the carbon emissions generated by the energy consumption in the electricity production process, calculate the carbon emission coefficient of power generation and analyze it.

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