Renewable energy carbon emission reduction accounting method and system considering electric carbon coupling and medium

By collecting data from the power grid dispatching system to quantify the risks of electricity-carbon coupling, and by carrying out coordinated optimization dispatching of electricity and carbon emissions and dynamic tracking of carbon emission flows, the problems of underestimation of the carbon emission reduction benefits of renewable energy and insufficient risk quantification in the power system have been solved, and accurate carbon emission reduction accounting has been achieved.

CN122264829APending Publication Date: 2026-06-23STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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Patent Information

Application Number
CN202610748357.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-28
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing carbon emission accounting methods for the power system cannot accurately reflect the real-time correlation between renewable energy output fluctuations and grid carbon intensity, leading to an underestimation or misjudgment of carbon reduction benefits. Furthermore, they lack the ability to quantify risks and cannot scientifically quantify the actual contribution of renewable energy units under different temporal and spatial conditions.

Method used

By collecting joint time-series data of net load and carbon emissions through the power grid dispatching system, the risk of electricity-carbon coupling is quantified, and electricity-carbon coordinated optimization dispatching is carried out. The carbon emission flow is dynamically tracked using the optimal power flow distribution results. Combined with the operating characteristics of renewable energy units, the actual carbon reduction contribution value of renewable energy is allocated, and carbon emission reductions covering the entire chain of power generation, power grid and users are generated.

Benefits of technology

It enables accurate and real-time accounting of carbon emission reductions from renewable energy sources, providing comprehensive and accurate data support for carbon management in the power system, and solving the problems of underestimating the benefits of carbon emission reduction and insufficient risk quantification.

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Abstract

The invention relates to the technical field of power system carbon management, in particular to a renewable energy carbon emission reduction accounting method considering power-carbon coupling, which comprises the steps of obtaining a power-carbon coupling risk coefficient based on net load-carbon emission combined time sequence data collected by a power grid dispatching system; performing power-carbon collaborative optimization scheduling through the power-carbon coupling risk coefficient to obtain an optimal power flow distribution result; performing carbon emission flow dynamic tracking by using an optimal power flow distribution result to obtain a full-node carbon potential vector and a load node carbon flow rate vector; according to the new energy unit grid-connected operation data, renewable energy source carbon reduction contribution distribution is carried out, and an actual carbon reduction contribution value of each renewable energy source unit is obtained; and coupling the full-node carbon potential vector, the load node carbon flow rate vector and the actual carbon reduction contribution value to generate renewable energy carbon emission reduction. According to the invention, through electricity-carbon coupling risk quantification and full-chain carbon emission flow tracking, accurate real-time accounting of renewable energy carbon emission reduction is realized.
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