Research on low-carbon economic operation optimization of integrated energy systems based on multi-level utilization of hydrogen production from electricity

doi:10.3969/j.issn.2097-0706.2025.07.008

Abstract

Abstract:

Driven by the "dual-carbon" goals， developing efficient and low-carbon integrated energy systems has become a critical priority. To address the issue of high carbon emissions， high operating costs， and low energy utilization efficiency of integrated energy systems， an optimization model for low-carbon economic operation of integrated energy systems was proposed based on multi-level utilization of hydrogen production from electricity. By integrating two-stage power-to-gas technology with carbon capture and storage technologies， carbon recycling within the system was achieved. Based on this， a multi-level utilization system for hydrogen production from electricity was established， which included methane production， hydrogen blending in natural gas， and hydrogen storage， thus improving hydrogen utilization efficiency. By incorporating the tiered carbon trading mechanism， an optimization model with the goal of minimizing total operating costs was developed. Case analysis showed that the optimization model improved hydrogen utilization efficiency by 8.2%， promoting the multi-level utilization of hydrogen. The total operating cost and carbon emissions were reduced by 7.58% and 10.1%， respectively， effectively promoting the low-carbon economic operation of the integrated energy system.

Key words: integrated energy system, carbon emissions, hydrogen production from electricity, tiered carbon trading mechanism, carbon capture and storage, two-stage power-to-gas, hydrogen blending in natural gas

CLC Number:

TK01

XING Zuoxia, ZHAO Ziyi, SUN Hao, ZHANG Pengfei, FU Qitong. Research on low-carbon economic operation optimization of integrated energy systems based on multi-level utilization of hydrogen production from electricity[J]. Integrated Intelligent Energy, 2025, 47(7): 71-81.

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设备	容量/MW	爬坡上/下限/(MW·h^-1)	效率
GT	400	150/-150	0.40/0.35
GB	100	40/-40	0.92
WT	500		0.40
PV	600		0.35
EB	50	10/-10	0.90
CFU	200	100/-100	0.90
EL	120	30/-30	0.85
ME	100	60/-60	0.70
CCSE	150	40/-40	0.90

设备	容量上/下限/(MW·h)	最大充/放功率/MW	充/放效率	初始容量/(MW·h)
TST	60/10	15/15	0.95/0.95	30
BP	60/10	15/15	0.90/0.90	30
HST	30/5	10/10	0.98/0.98	15

设备	碳排放系数	数值
燃煤机组	a₁	36
	b₁	-0.380
	c₁	0.003 4
燃气机组	a₂	3
	b₂	-0.004
	c₂	0.001 0

项目	场景1	场景2	场景3
总成本/万元	458.56	482.07	496.17
弃风弃光成本/万元	0.71	7.76	38.02
启停成本/万元	0.16	0.08	0.32
碳封存成本/万元	29.34	26.50	0
碳交易成本/万元	-8.36	-6.22	6.26
购气成本/万元	410.35	433.77	420.99
煤耗成本/万元	26.36	20.18	19.54
购碳成本/万元	0	0	11.04
碳排放/t	2 931.88	2 873.25	3 259.97

场景	CCSE耗电功率	CFU产电功率	EL耗电功率	EB产热功率	GT产电功率	GB产热功率	GT产热功率
1	113.54	1 246.07	1 564.48	810.83	4 189.34	1 813.15	4 330.67
4	177.63	1 249.62	1 159.32	924.31	3 824.28	1 910.93	4 152.87