A Source-load Low Carbon Optimization Methodology Considering Carbon Responsibility for Direct Carbon Emissions from Cement Plants

doi:10.11930/j.issn.1004-9649.202401019

Abstract

Abstract:

Under the background that the new power system presents higher low-carbon requirements on both source and load, reasonable carbon responsibility allocation of the power system has important guiding significance for the collaborative low-carbon optimization of the source and load. Therefore, this paper proposes a source-load low-carbon optimization operation method that takes into account the direct carbon emission carbon responsibility of the cement plant to further improve the carbon responsibility apportionment. Firstly, the characteristics of direct carbon emissions from production and indirect carbon emissions from electricity consumption are analyzed, and the source and load are thus connected on the basis of the bidirectional carbon emission characteristics. A bidirectional carbon flow model is established for cement plant based on the theory of carbon emission flow, and a new carbon responsibility allocation method is proposed. And then, based on an analysis of the bidirectional carbon flow characteristics of source and load, a grid bidirectional carbon flow optimization model is built to evaluate the carbon reduction capability of users and power grid with the objective to minimize the overall carbon emissions. Finally, the IEEE33 node is used to verify the proposed low-carbon optimization operation method of source-load bidirectional carbon flow, and the results show that the proposed method has practical carbon reduction benefits and carbon reduction effectiveness without affecting the production of cement plants.

Key words: carbon emission flow, direct carbon emission from production, carbon responsibility allocation, bidirectional source-load carbon flow, low-carbon optimized operation

CLC Number:

TM732

Jiang LI, Yuanzheng FAN, Bo LIU. A Source-load Low Carbon Optimization Methodology Considering Carbon Responsibility for Direct Carbon Emissions from Cement Plants[J]. Electric Power, 2025, 58(1): 141-152.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202401019

https://www.electricpower.com.cn/EN/Y2025/V58/I1/141

Figures/Tables 15

Fig.1 Carbon emissions from cement processing

Table 1 Carbon emission factor of raw material production

原材料种类		碳排放因子
石灰石		1.72×10^–2
砂岩		1.42×10^–2
黏土		2.91×10^–4
二水石膏		1.38×10^–1

Fig.2 Main ideas for bidirectional carbon emissions

Fig.3 Model solving flow

Fig.4 Schematic of reference system

Table 2 Operating parameters of distributed gas turbines

参数名称	数值
参数名称	G1	G2
最大输出功率/kW	150	200
最小输出功率/kW	0	0
机组碳势/(kg·(kW·h)^–1)	0.75	0.8

Fig.5 Output comparison curve of distributed units

Fig.6 Grid carbon reduction results

Table 3 Comparison of cement plant fitting results

组别	M_SE	R
水泥厂1训练组	3.7810^–2	0.979
水泥厂1验证组	2.8710^–2	0.984
水泥厂1测试组	3.6310^–2	0.978
水泥厂2训练组	3.6910^–2	0.976
水泥厂2验证组	3.9810^–2	0.982
水泥厂2测试组	4.2010^–2	0.982

Fig.7 Shiftable load distribution of cement plants

Fig.8 Comparison of low carbon optimization operating load and carbon potential change results of cement plants

Fig.9 Details of carbon emissions before and after low-carbon optimization operation of cement plants

Fig.10 Time-of-use tariff

Table 4 Daily revenue details for users to adjust their electricity consumption behavior

用户	收益/元
用户	降碳	电费	总计
水泥厂1	44.880	37.275	82.155
水泥厂2	74.562	177.297	251.859

Fig.11 Comparison of overall carbon emission optimization operation

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