Economic benefit analysis of optimal allocation of energy storage in multiple application scenarios

doi:10.19799/j.cnki.2095-4239.2024.0055

Abstract

Abstract:

Energy storage technology provides an efficient way to relieve strain on power grids caused by the integration of large-scale renewable energy sources. It also addresses the challenges posed by the intermittent and unpredictable nature of power generation from wind and solar energies. This study examines the most efficient way to store energy in the photovoltaic power stations of the Beipanjiang River basin, considering their specific traits. To enhance the operation of photovoltaic systems in this region, a combination of electrochemical and hydrogen energy storage is utilized. The primary goal is to minimize the net present value cost of the energy storage system, with the capacity of the energy storage system and the maximum power for charging and discharging acting as constraints. The economic advantages of various energy storage devices are analyzed and optimized. Utilizing HOMER Pro software for operational analysis, optimal energy storage capacity configuration is determined. The economy is then divided into power generation side, power grid side, and financial leasing mode under multiple application scenarios based on the current price standards in Guizhou Province. This segmentation helps obtain economic benefits and revenue models under each application mode. This approach provides a practical solution for energy storage configurations in photovoltaic power stations in the region, offering significant value.

Key words: energy storage technology, electrochemical energy storage, hydrogen energy storage, capacity configuration, multiple application scenarios

CLC Number:

TM 619

Chu ZHANG, Dongcai CHEN, Xiangping CHEN, Yongxiang CAI. Economic benefit analysis of optimal allocation of energy storage in multiple application scenarios[J]. Energy Storage Science and Technology, 2024, 13(6): 2078-2088.

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类型	使用寿命/年	装机成本/(元/kW)	替换成本/(元/kW)	年运行成本/(元/kW)
光伏	25	3000	3000	20
1 MWh锂电池	15	700000/MWh	700000/MWh	10000/MWh
燃料电池	6	3000	2500	0.01
电解槽	15	2000	1600	0
氢储罐	25	450	360	0
变流器	15	300	300	0

方案	光伏/MW	燃料电池/MW	1 MWh锂电池	净现值成本/亿元	平均化能源成本/元	经营成本/(亿元/年)	初始投资成本/亿元
1	1300	0	137	45.5	0.1792878	0.381	40.6
2	1300	100	0	46.2	0.1824207	0.291	42.5
3	1300	50	126	47.5	0.1933583	0.393	42.4

光伏/MW	1 MWh锂电池	净现值成本/亿元	平均化能源成本/元	经营成本/(亿元/年)	初始投资成本/亿元
1300	137	45.5	0.1792878	0.381	40.6
1300	146	45.5	0.1793991	0.382	40.6
1300	142	45.5	0.1794994	0.383	40.6
1300	148	45.6	0.1796167	0.384	40.6
1300	153	45.7	0.1799694	0.386	40.7

光伏/MW	燃料电池/MW	净现值成本/亿元	平均化能源成本/元	经营成本/(亿元/年)	初始投资成本/亿元
1300	100	46.2	0.1824207	0.291	42.5
1300	105	46.2	0.1824753	0.292	42.5
1300	110	46.4	0.1830394	0.291	42.6
1300	112	46.5	0.1838375	0.293	42.7
1300	123	46.8	0.1848458	0.298	42.9

参数	数值	参数	数值
储能项目容量/MWh	137	充放电深度	95%
储能时长/h	2	能量转换效率	90%
储能装机成本/(元/MWh)	700000	系统循环次数	5000
储能替换成本/(元/MWh)	700000	电池终止容量	80%
储能年运行成本/(元/MWh)	10000	年投运天数	350
电池折旧年限/年	15	里程成本/(元/MW)	3.93