CN-122022527-A - Method for adjusting electric power carbon emission factor by considering green rights transfer market level

CN122022527ACN 122022527 ACN122022527 ACN 122022527ACN-122022527-A

Abstract

The invention discloses a method for adjusting electric power carbon emission factors by considering green rights and interests transfer in market level, and belongs to the technical field of electric power system carbon emission metering and accounting. Aiming at the problems of insufficient regional difference implementation, fuzzy carbon responsibility definition, green equity excitation deficiency and the like of the existing accounting system, the invention sequentially completes the steps of accounting boundary determination and basic data acquisition, total carbon emission accounting at the local power generation side, preliminary electric power carbon emission factor calculation, green electricity consumption calculation of the nuclear purification certificate, and corrected municipal electric power carbon emission factor calculation according to the principles of territory, line loss carbon emission allocation and green equity correction core principles. The electric power carbon emission level of the city is accurately quantized through a series of formulas, the correction factors are taken into the local renewable energy sources and the nuclear green electricity consumption conditions, the electric power carbon emission factors of the city considering green rights and interests can be clearly defined, green electric power consumption is stimulated, and scientific basis is provided for the ground-level double-carbon target landing.

Inventors

ZHANG YANLI
WANG JING
LAN Danyang
LIU DAOQING
GUO RUIFENG
QIU JIYANG
LI XIAOTENG
PENG SHUTAO
ZHOU QIAN

Assignees

国网陕西省电力有限公司电力科学研究院
国网陕西省电力有限公司
国网英大碳资产管理(上海)有限公司

Dates

Publication Date: 20260512
Application Date: 20260206

Claims (10)

1. A method for regulating electric power carbon emission factor in consideration of green equity transfer, comprising the steps of: S1, an accounting boundary determination and basic data acquisition step, namely determining an accounting period and a ground level municipal administration boundary, and acquiring the generated energy of a local power supply, corresponding unit carbon emission factors, the power consumption of a whole society terminal, the generated energy of renewable energy sources, the purchase amount and the sales amount of green electricity of an accounting certificate; S2, a step of calculating the total carbon emission of the local power generation side based on a territorial principle, and calculating the total carbon emission of the local power generation side according to the generated energy of all power generation facilities in the administrative boundary of the city and the corresponding unit carbon emission factor; S3, calculating a preliminary electric power carbon emission factor, namely dividing the sum of the total carbon emission of the local power generation side and the net regulated thermal power carbon emission by the electricity consumption of all social terminals to obtain the preliminary local electric power carbon emission factor, wherein the distribution line loss carbon emission of the provincial power grid is indirectly distributed through the division operation; S4, calculating the green electricity consumption of the nuclear evidence, and calculating the green electricity consumption of the nuclear evidence based on the purchase amount and the sales amount of the green electricity of the nuclear evidence; and S5, calculating the modified municipal power carbon emission factor, namely subtracting the renewable energy power generation amount and the clean nuclear evidence green power consumption amount from the power consumption of the whole society terminal, multiplying the primary power carbon emission factor, and combining the zero carbon attribute of the green power to obtain the modified municipal power carbon emission factor.
2. The method of claim 1, wherein the territorial principle is to divide the carbon intensity responsibility of the electric power system into the power generation side responsibility and the load side responsibility based on the electric quantity statistics and the quantifiable traceability principle by taking the territorial municipal boundary as an accounting range and using statistical balance to replace physical tracking.
3. The method of claim 1, wherein the line loss carbon emission allocation is to indirectly allocate the carbon emission corresponding to the line loss, which is transmitted to the local power grid, to the local terminal power consumption through the calculation logic of the total emission/terminal power consumption, so as to implement the principle of 'who consumes and who takes charge'.
4. The method of claim 1, wherein the green equity modification mechanism modifies the power carbon emission factor by subtracting a zero carbon charge corresponding to renewable energy generation and nuclear green electricity consumption to stimulate green electricity development and consumption.
5. The method according to claim 1, wherein the local power generation side total carbon emission amount is calculated according to formula (2): , wherein, Generating capacity of a j-th power supply in the accounting period of the city i; And n is the total number of power types in the city i.
6. The method of claim 1, wherein the preliminary electrical carbon emission factor is calculated according to formula (1): , wherein, Total carbon emissions generated for all local power generation facilities during the earth city i accounting period; The method comprises the steps of net dispatching thermal power generation carbon emission in the city i in the period t; the electricity consumption of the whole society in the accounting period of the city i; the net modulated thermal power generation carbon emission is calculated by the net transfer amount delta E of electric power: Wherein, the method comprises the steps of, = , For the power supply quantity of the ground city i, For the i-network power of the ground city, 。
7. The method of claim 1, wherein the net nuclear green electricity consumption is calculated according to equation (4): Wherein, the method comprises the steps of, The total amount of nuclear evidence green electricity purchased during the accounting period for city i, The total amount of nuclear evidence green electricity sold in the accounting period of the city i.
8. The method of claim 1, wherein the modified utility power carbon emission factor is calculated according to equation (3): , wherein, Renewable energy generating capacity in accounting period for city i; Green electricity consumption for nuclear verification in the accounting period of the city i; Is the theoretical carbon emission corresponding to the renewable energy generating capacity, Theoretical carbon emission corresponding to green electricity for nuclear evidence, due to The actual value of the renewable energy zero-carbon attribute is 0.
9. The method of claim 1, wherein the base data further comprises inter-city power input output relationship data to adapt to the actual situation of the city level regional power interaction.
10. The method of claim 1, wherein the modified utility grade power carbon emission factor is directly applied to a utility carbon management decision or an enterprise carbon emission accounting to facilitate a utility grade "two carbon" target landing.

Description

Method for adjusting electric power carbon emission factor by considering green rights transfer market level Technical Field The invention belongs to the technical field of carbon emission metering and accounting of an electric power system, and particularly relates to a method for adjusting electric power carbon emission factors by a city level in consideration of green benefit transfer. The method is used for accurately accounting carbon emission responsibility of power consumers after emission reduction through marketization means such as green electricity transaction, green license transaction and the like. Background At present, optimizing regional electric power carbon emission factors through market means such as green electricity, green evidence and the like becomes a core direction of the development of an international electric carbon factor accounting system. The development in the direction has two core requirements, namely, the electric carbon factor needs to realize regional refinement in the space dimension, the difference of power structures of coal electricity, water electricity, wind electricity, photovoltaic and the like in different regions is accurately reflected, and the accounting system needs to fully incorporate the application value of environmental benefits such as green evidence and the like, so that the local green electricity consumption is pulled, and the energy structure is promoted to be optimized and upgraded. At present, china only publishes the average carbon emission factors of the power grid at three levels of countries, regions and provinces, and no accounting system covering the city level is formed. Meanwhile, the existing electricity-carbon factor accounting method does not consider the current consumption situation of green electricity and green evidence of market level differentiation, so that the existing electricity-carbon factor accounting method has obvious defects in the application of a ground market level scene, and is specifically as follows: 1. The structural difference of regional power supply can not be reflected The statistics and calculation of the existing electric power carbon emission factors only cover the provincial level and cannot reflect the actual level of electric power carbon emission of the city level. The emission reduction contribution of the renewable energy enrichment region is difficult to be fairly approved, the carbon emission pressure of the high-heat power proportion region cannot be accurately estimated, and the enthusiasm and the accuracy of the local carbon emission reduction work are directly affected. 2. Carbon responsibility definition ambiguity of power interactions Under the unified dispatching mode of the provincial power grid, a complex electric power input and output relationship exists between the ground and the city. The existing accounting method cannot adapt to the actual current situation of electric power interaction in the district-level area, and carbon emission repeated calculation or accounting deviation is easy to cause, so that the attribution of carbon responsibility on the district-level is unclear, and the decomposition and implementation of a carbon emission reduction target are not facilitated. 3. Lack of green equity incentive mechanisms The existing accounting method cannot effectively distinguish the local renewable energy power generation from the nuclear evidence green power actively purchased by a user, and the zero-carbon attribute of the two types of green power cannot be reflected in the local electric carbon factor. The method makes the behavior of developing green energy sources in places and consuming green power by users unable to obtain corresponding accounting approval, and is unfavorable for stimulating the transformation of the energy source structure and the cultivation of green power consumption markets. Therefore, there is an urgent need in the art for a method for constructing a municipal power carbon emission factor that can achieve accurate accounting, fairly define carbon responsibility, and guide energy transformation, so as to fill the gap in the prior art and meet the actual requirements of municipal power carbon management. Disclosure of Invention First, the technical problem to be solved Aiming at the problems of insufficient refinement degree, to-be-improved carbon responsibility fairness, green equity excitation deficiency and the like in the existing electric power carbon emission factor accounting, the invention provides a method for adjusting electric power carbon emission factors by considering green equity transfer, which specifically solves the following technical problems: (1) Based on the carbon responsibility boundary and the territory principle, constructing an accounting system for clearly defining carbon responsibility in the level of the ground city, and solving the problem of fuzzy attribution of the carbon responsibility between the ground city; (2) Establis