Low-carbon economic scheduling of source-load coordination in power systems considering joint response mechanism of carbon intensity and electricity price

doi:10.3969/j.issn.2097-0706.2025.11.001

Abstract

Abstract:

Balancing economic scheduling and low-carbon operation in power systems while effectively leveraging the potential of source-load coordination is critical for current power system optimization. Then， a source-load coordinated low-carbon economic scheduling method considering carbon intensity-electricity price joint response mechanism was proposed. The low-carbon operational characteristics of carbon capture power plants under integrated flexible operation modes and the load regulation principles of demand response were elaborated. Additionally， their complementarity in low-carbon operation was analyzed， and a coordinated operational framework for carbon capture power plants and demand response was established. By allocating partial carbon responsibility to the load side using carbon emission flow theory， a carbon intensity-electricity price joint response model was proposed to enhance the carbon reduction capability of the load side. With the goal of minimizing system operating cost， based on the tiered carbon trading mechanism and combined with the proposed source-load coordinated operation framework， a two-stage low-carbon economic scheduling model was developed to achieve coordinated source-load optimization. Comparative analysis of multiple scenarios based on a modified IEEE 39-bus system demonstrated that the proposed method could reduce system carbon emissions by 15% and decrease comprehensive operating costs by 4%， validating its coordinated optimization in both economic and low-carbon performance.

Key words: low-carbon economic scheduling, carbon emission flow theory, demand response, carbon capture power plant, tiered carbon trading mechanism, carbon intensity-electricity price joint response model

CLC Number:

TK018：TM73

SU Weiqi, HUANG Yuxuan, CHEN Feixiong, SHAO Zhenguo, HU Kunxi, WU Hongbin. Low-carbon economic scheduling of source-load coordination in power systems considering joint response mechanism of carbon intensity and electricity price[J]. Integrated Intelligent Energy, 2025, 47(11): 1-13.

Figures/Tables 17

Fig.1

Fig.2

Fig.3

Fig.4

Table 1

Fig.5

Table 2

Table 3

Table 4

Parameters of carbon capture power plants

参数	数值	参数	数值
M_MEA/（g·mol^-1)	61.08	ρ_R/(g·mL^-1)	1.01
$M C O 2$ /(g·mol^-1)	44.00	V_L，_z/L	6 000×4
x_R/%	30	λ/[(MW·h)·t^-1]	0.269
η/%	120	β	0.9
θ/(mol·mol^-1)	30	δ	0.6

Table 4

Table 5

Fig.6

Table 6

Fig.7

Fig.8

Fig.9

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Fig.11

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机组类型	机组编号	节点位置	GCI/ [t·(MW·h)^-1]
燃煤	G1	30	1.09
燃煤	G2	31	1.20
燃煤	G3	39	1.20
燃煤	G4	32	1.11
燃煤	G5	33	1.08
燃煤	G6	34	1.12
燃煤	G7	35	1.10
燃煤	G8	37	1.09
燃煤	G9	38	1.05
燃气	GT1	27	0.40
燃气	GT2	36	0.40

时段	高峰	平段	低谷
高峰	-0.100	0.016	0.012
平段	0.016	-0.100	0.010
低谷	0.012	0.010	-0.100

时段	划分
00:00 — 09:00, 22:00 —24:00	低谷
09:00 —11:00, 15:00 —17:00, 20:00 —22:00	平段
11:00 —15:00, 17:00 —20:00	高峰

调度结果	场景1	场景2	场景3	场景4	场景5	场景6
综合成本/万美元	177.310 0	257.340 0	250.780 0	248.180 0	247.670 0	246.960 0
碳交易成本/万美元	24.055 0	78.932 2	35.141 8	34.193 9	33.936 7	33.212 0
碳排量/t	118 480	98 164	90 425	84 004	83 788	83 407
弃风量/MW	4 968.1	1 038.4	394.5	334.9	150.5	0
弃风率/%	18.25	3.81	1.45	1.23	0.55	0

时段	电价
00:00 — 09:00, 22:00 —24:00	65.96
09:00 —11:00, 15:00 —17:00, 20:00 —22:00	69.32
11:00 —15:00, 17:00 —20:00	74.35