CN-122022194-A - Lean evaluation method and system for electric power and carbon indexes of power grid supporting low-carbon park to operate

CN122022194ACN 122022194 ACN122022194 ACN 122022194ACN-122022194-A

Abstract

The invention discloses a method and a system for lean evaluation of electric carbon indexes of a power grid for supporting operation of a low-carbon park. The method comprises the steps of obtaining generating capacity data of various generator sets of a target power grid in an hour unit in a preset time period, calculating an hour-level electric carbon index based on the generating capacity data, wherein the hour-level electric carbon index comprises an average electric grid carbon emission factor and a residual carbon emission factor, the residual carbon emission factor is calculated by eliminating electric quantity which declares green electricity benefits from total electric quantity, and the evaluation index system comprising three dimensions of economy, high efficiency, green low carbon and flexibility is constructed by comprehensively evaluating the green low carbon level of the power grid based on the hour-level electric carbon index. The method solves the problems of poor timeliness, coarse granularity and repeated calculation of green electricity environmental value in the existing power grid carbon emission factor evaluation, realizes dynamic and high-precision evaluation of the power grid carbon emission level, and provides scientific basis for carbon emission accounting and dynamic energy utilization strategy formulation of a low-carbon park.

Inventors

ZHANG GUIHONG
REN JUNZHI
ZENG YUAN
QIN CHAO
SUN BING
JIA HONGJIE

Assignees

天津大学

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (8)

1. The utility model provides a lean evaluation method for electric carbon indexes of a power grid for supporting low-carbon park operation, which is characterized by comprising the following steps: S1, acquiring generating capacity data of various generator sets taking hours as a unit in a preset time period of a target power grid; S2, calculating a group of hour-level electric carbon indexes at least comprising an average carbon emission factor and a residual carbon emission factor of a target power grid based on the generated energy data, wherein the calculation of the residual carbon emission factor is that after the electric quantity which is declared to have green environmental benefits is removed from the total electric quantity of the target power grid, the carbon emission of a unit electric quantity is calculated; s3, based on the hour-level electrical carbon index, evaluating the green low-carbon level of the target power grid, and generating an evaluation result; based on the hour-level electric carbon index, constructing an evaluation index system from three dimensions of economy, high efficiency, green low carbon and flexibility; The evaluation index system comprises: the evaluation indexes of the economic and efficient dimension comprise the change rate of the electricity consumption indirect carbon emission cost, and are used for representing the carbon cost fluctuation trend in unit time; the evaluation indexes of the green low-carbon dimension comprise an average carbon emission factor of power supply of the power grid and total green electricity transaction amount, and are used for representing the cleanliness degree of the power grid; the evaluation index of the flexible dimension comprises a green electricity environment overflow rate of change and is used for representing the market fluctuation degree of the green electricity environment value.
2. The method for lean evaluation of electrical carbon indicators of a power grid of claim 1, wherein the set of hour grade electrical carbon indicators further comprises a green electrical duty cycle and a zero carbon electrical energy duty cycle; The green electricity duty ratio is the proportion of the sum of the total green electricity generation amount and the input green electricity quantity in the area to the total electricity quantity; The zero-carbon electric energy duty ratio is the ratio of the sum of the total zero-carbon electric energy generation amount and the input zero-carbon electric quantity in the area to the total electric quantity.
3. The method for lean evaluation of electrical carbon indicators of a power grid according to claim 1, wherein in step S2, The green environmental rights include green carbon rights transfer evidence; The calculation of the residual carbon emission factor is satisfied by dividing the total carbon emission of the target power grid by a corrected electric quantity value, wherein the corrected electric quantity value is obtained by deducting the electric quantity with green environmental benefits from the total electric quantity of the target power grid.
4. The method of claim 1, wherein the evaluation result is used to support one or a combination of the following operating strategies for the low-carbon park: Calculating the range two-carbon emission, and calculating the indirect emission of outsourcing power by using the hour-level residual carbon emission factor; and (3) formulating a dynamic energy utilization strategy, and adjusting a high-energy-consumption production period or an energy storage charging and discharging plan of the park according to the change rate of the electricity consumption indirect carbon emission cost or the change rate of the green electricity environment premium.
5. The utility model provides a support electric carbon index lean evaluation system of electric wire netting of low carbon garden operation which characterized in that includes: The data acquisition module is used for acquiring the generating capacity data of various generator sets taking the hour as a unit in a preset time period of a target power grid; The index calculation module is used for calculating a group of hour-level electric carbon indexes at least comprising an average carbon emission factor and a residual carbon emission factor of a target power grid based on the power generation amount data, wherein the calculation of the residual carbon emission factor is that the carbon emission amount of the unit power is calculated after the power which is declared to have green environmental benefits is removed from the total power consumption of the target power grid; The evaluation module is used for evaluating the green low-carbon level of the target power grid based on the hour-level electric carbon index and generating an evaluation result, and is used for constructing an evaluation index system from three dimensions of economy, high efficiency, green low carbon and flexibility based on the hour-level electric carbon index; The evaluation index system comprises: the evaluation indexes of the economic and efficient dimension comprise the change rate of the electricity consumption indirect carbon emission cost, and are used for representing the carbon cost fluctuation trend in unit time; the evaluation indexes of the green low-carbon dimension comprise an average carbon emission factor of power supply of the power grid and total green electricity transaction amount, and are used for representing the cleanliness degree of the power grid; the evaluation index of the flexible dimension comprises a green electricity environment overflow rate of change and is used for representing the market fluctuation degree of the green electricity environment value.
6. The system of claim 5, wherein the index calculation module is further configured to calculate a green electricity duty ratio and a zero carbon electricity duty ratio, and wherein the evaluation module is further configured to construct an evaluation index system from three dimensions of economy, efficiency, green low carbon and flexibility based on the hour-level electricity-carbon index, calculate an evaluation index value of the evaluation index in each dimension, and output a dynamic strategy suggestion for guiding the operation of the low carbon park.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the grid electrical carbon indicator lean assessment method of any one of claims 1 to 4 when the computer program is executed by the processor.
8. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the grid electricity-carbon index lean evaluation method according to any one of claims 1 to 4.

Description

Lean evaluation method and system for electric power and carbon indexes of power grid supporting low-carbon park to operate Technical Field The invention belongs to the technical field of electric power systems and carbon emission accounting, and particularly relates to a method and a system for lean evaluation of electric carbon indexes of a power grid for supporting operation of a comprehensive energy system of a low-carbon park. Background The development of a comprehensive energy system (INTEGRATED ENERGY SYSTEM, IES) collaborative optimization operation technology of a low-carbon park becomes a research hotspot. The prior art aims at uniformly scheduling various energy sources such as electricity, heat, gas and the like in a park by constructing a complex optimization model so as to realize multi-objective balance of economy, environmental protection and reliability. The technical problem to be solved in the practical application of the prior art is that a set of unified and refined index system is lacked to comprehensively and dynamically evaluate the green low-carbon level of the novel power system. The prior art focuses on a single optimization target (such as lowest cost or lowest carbon emission), and cannot systematically evaluate the electrical carbon characteristics of the power grid from multiple dimensions of economy, green level, flexibility and the like, so that a comprehensive and quantitative decision basis cannot be provided for users such as parks to select the best energy utilization period, participate in high-level low-carbon behaviors such as response of the demand side and the like. Therefore, how to precisely evaluate the electric carbon index of the power grid to provide scientific data support for low-carbon transformation of the park is a technical problem to be solved in the field. Disclosure of Invention The invention aims to overcome the defects in the prior art and provides a method and a system for lean evaluation of electric carbon indexes of a power grid for supporting operation of a low-carbon park. The invention aims at realizing the following technical scheme: a lean evaluation method for electric carbon indexes of a power grid for supporting operation of a low-carbon park comprises the following steps: S1, acquiring generating capacity data of various generator sets taking hours as a unit in a preset time period of a target power grid; S2, calculating a group of hour-level electric carbon indexes at least comprising an average carbon emission factor and a residual carbon emission factor of a target power grid based on the generated energy data, wherein the calculation of the residual carbon emission factor is that after the electric quantity which is declared to have green environmental benefits is removed from the total electric quantity of the target power grid, the carbon emission of a unit electric quantity is calculated; And S3, based on the hour-level electrical carbon index, evaluating the green low-carbon level of the target power grid, and generating an evaluation result. Further, the set of hour level electrical carbon indicators further includes a green electrical duty cycle and a zero carbon electrical energy duty cycle; The green electricity duty ratio is the proportion of the sum of the total green electricity generation amount and the input green electricity quantity in the area to the total electricity quantity; The zero-carbon electric energy duty ratio is the ratio of the sum of the total zero-carbon electric energy generation amount and the input zero-carbon electric quantity in the area to the total electric quantity. Further, in step S2, The green environmental rights include green carbon rights transfer evidence; the calculation of the residual carbon emission factor is satisfied by dividing the total carbon emission of the target power grid by a corrected electric quantity value, wherein the corrected electric quantity value is obtained by deducting the electric quantity with green carbon benefit transfer evidence from the total electric quantity of the target power grid. Further, step S3 includes: based on the hour-level electrical carbon index, constructing an evaluation index system from three dimensions of economy, high efficiency, green low carbon and flexibility; And respectively calculating the evaluation index values of the evaluation indexes in each dimension, and comprehensively generating the evaluation result. Further, the evaluation index system specifically includes: the evaluation indexes of the economic and efficient dimension comprise the change rate of the electricity consumption indirect carbon emission cost, and are used for representing the carbon cost fluctuation trend in unit time; the evaluation indexes of the green low-carbon dimension comprise an average carbon emission factor of power supply of the power grid and total green electricity transaction amount, and are used for representing the cleanliness degree of the po