Capacity Optimization Configuration of a Bidirectional Reversible Centralized Electrohydrogen Coupling System

doi:10.11930/j.issn.1004-9649.202312101

Abstract

Abstract:

In response to the problem of wind and light abandonment in large-scale new energy power plants in areas with abundant wind and solar energy, a bidirectional reversible centralized RSOC electric hydrogen coupling system capacity optimization configuration method is proposed by utilizing the reversible solid oxide fuel cell (RSOC) combined with the bidirectional conversion characteristics of hydrogen energy storage to absorb excess wind and solar resources. Firstly, construct a centralized RSOC electric hydrogen coupling system architecture, and establish models for power generation systems, electric hydrogen conversion systems, etc; Secondly, considering the characteristics of fuel cells, establish an RSOC performance degradation model, and generate typical scenarios considering the uncertainty of available transmission capacity of ultra-high voltage channels; Furthermore, a centralized RSOC double-layer capacity planning model is established. The upper layer optimizes the capacity configuration of RSOC and hydrogen storage with the goal of maximizing revenue during the operation period, while the lower layer optimizes the output of each equipment with the goal of minimizing comprehensive cost. The solution is solved by combining particle swarm optimization algorithm and CPLEX solver. Finally, through case analysis, it was verified that the addition of RSOC improved the system's economic and environmental benefits. At the same time, investment sensitivity analysis showed that the unit capacity cost of batteries is an important factor restricting the economic operation of the system.

Key words: centralized electro hydrogen coupling system, reversible solid oxide fuel cells, capacity planning, hydrogen energy storage, performance degradation

Xing FENG, Wei YANG, Anan ZHANG, Xi ZHANG, Qian LI, Xianzhang LEI. Capacity Optimization Configuration of a Bidirectional Reversible Centralized Electrohydrogen Coupling System[J]. Electric Power, 2024, 57(8): 1-11.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202312101

https://www.electricpower.com.cn/EN/Y2024/V57/I8/1

Figures/Tables 15

References 27

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最大速度		粒子数目		学习因子		惯性权重		最大迭代次数		SOFC 热效率		SOFC 电效率		SOEC 耗热系数		储氢装置充放效率		固定资产残值率/%		风机光伏寿命/ 年
10		20		1.5、2		0.4~0.9		40		0.25		0.56		0.4		0.98		5		20

最大速度		粒子数目		学习因子		惯性权重		最大迭代次数		SOFC 热效率		SOFC 电效率		SOEC 耗热系数		储氢装置充放效率		固定资产残值率/%		风机光伏寿命/ 年
10		20		1.5、2		0.4~0.9		40		0.25		0.56		0.4		0.98		5		20

RSOC 投资成本/ (元·kW^–1)		储氢库投资成本/ (元·kg^–1)		设备运行维护成本/ (元·(kW·h)^–1)		氢气储存成本/ (元·(Nm³)^–1)		运输成本/(元·(Nm³)^–1)		氢气售卖价格/ (元·(Nm³)^–1)		氢制电增发电量收益/ (元·(kW·h)^–1)		余热利用收益/ (元·(kW·h)^–1)		特高压输电通道利用收益/ (元·(kW·h)^–1)
6000~8000		3000~5000		0.04~0.16		1~1.9		1.2~1.5（液），1.145~2.1（气）		3.5~5		0.14~0.22		0.25~0.4		0.02~0.12

RSOC 投资成本/ (元·kW^–1)		储氢库投资成本/ (元·kg^–1)		设备运行维护成本/ (元·(kW·h)^–1)		氢气储存成本/ (元·(Nm³)^–1)		运输成本/(元·(Nm³)^–1)		氢气售卖价格/ (元·(Nm³)^–1)		氢制电增发电量收益/ (元·(kW·h)^–1)		余热利用收益/ (元·(kW·h)^–1)		特高压输电通道利用收益/ (元·(kW·h)^–1)
6000~8000		3000~5000		0.04~0.16		1~1.9		1.2~1.5（液），1.145~2.1（气）		3.5~5		0.14~0.22		0.25~0.4		0.02~0.12

方案	蓄电池/ MW	电解槽/ MW	RSOC/ MW	储氢库/t	投资成本/万元	弃风弃光量/ ((MW·h)·年^–1)	运营周期/ 年	投资回收期/年
1	11.3	0	0	0	5693.4	13285.7	4.0	0
2	0	12.8	0	6.4	6484.5	5683.2	8.0	7.2
3	0	0	12.2	5.1	18022.5	8304.4	8.8	7.6
4	0	0	14.6	6.2	21880.2	0.0	9.1	7.9