电力科技与环保2026，Vol.42Issue(4)：602-611,10.DOI:10.19944/j.eptep.1674-8069.2026.04.009
高精度CO2排放量核算方法及排放特性研究
Research on high-precision CO2 emission accounting methods and emission characteristics
摘要
Abstract
[Objective]High-precision CO2 emission data is served as a crucial foundation for the effective operation of carbon markets and international recognition.Carbon emission reduction in coal-fired power units is effectively guided by obtaining high-precision CO2 emission accounting methods and data.[Methods]Based on over 3 000 pieces of historical data from the 600 MW coal-fired power unit,the comparative analysis of the carbon emission accounting results and relative deviations of the emission factor method,carbon balance method,and online monitoring method is conducted under different time scales,and the impact of carbon oxidation rate on carbon emissions is discussed under different time scales in this paper.[Results]The deviations of carbon emission accounting results between the emission factor method and the carbon balance method,and between the emission factor method and the online monitoring method are 0.95%and 21.14%respectively,indicating a relatively large deviation in CO2 emission accounting results between the accounting method and the online monitoring method.Under the same time scale,the optimal carbon emission accounting results with the smallest relative uncertainty is provided by carbon balance method,which is 1.40%at the daily scale and 1.70%at the hourly scale,both lower than the 8%requirement of Tier 3 in IPCC.The accuracy and reliability of data is improved by reducing the time scale.The scientific regulation of CO2 emissions is more conducive to accounting based on daily-scale data.The accuracy of carbon emission accounting results is greatly affected by the time scale minor change.The average daily-scale carbon oxidation rate is 93.6%,which is 5.4 percentage points lower than the recommended value of 99%.[Conclusion]The CO2 emission accounting results are significant deviations under different accounting methods.The feasible high-precision CO2 emission accounting method is advanced based on daily-scale monitoring data,which the adverse impacts of factors such as methodology,timeliness,and carbon oxidation rate is effectively reduced under current technical conditions.关键词
燃煤机组/CO2/核算方法/碳氧化率/排放特性Key words
coal-fired power unit/carbon dioxide/accounting methods/carbon oxidation rate/emission characteristic分类
能源科技引用本文复制引用
杨用龙,裴海波,苏秋凤,张杨,衡世权,喻江..高精度CO2排放量核算方法及排放特性研究[J].电力科技与环保,2026,42(4):602-611,10.基金项目
国家重点研发计划项目(2022YFC3701505) （2022YFC3701505）
