Economic assessment for energy storage technologies adaptive to variable renewable energy

doi:10.19799/j.cnki.2095-4239.2021.0379

Abstract

Abstract:

Low-cost energy storage is the pivot to future energy systems with a high variable renewable energy (VRE) penetration. Current economic studies on the energy storage measured by the levelized cost of storage (LCOS) are normally based on the technical specifications of storage products rather than on real-life operation conditions. The LCOS is highly influenced by the changing operation conditions when the VRE increases. This study focuses on the LCOS comparisons of various energy storage technologies based on provincial case studies in the western part of China, where the VRE has become the mainstream in the electric power supply. The key factors that are likely to influence the LCOS (e.g., power system regulation duration, regulation frequency, and VRE curtailment) are investigated individually herein.

Key words: electric-chemical energy storage, pumped hydro storage, hydrogen, levelized cost of storage, variable renewable energy

CLC Number:

TK 02

Jian LIU. Economic assessment for energy storage technologies adaptive to variable renewable energy[J]. Energy Storage Science and Technology, 2022, 11(1): 397-404.

Figures/Tables 8

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年份/年	储能技术	装机容量 /MW	放电时间/h	容量成本 /(CNY/kW)	能量成本 /[CNY/(kW·h)]	循环寿命/次	年循环次数/次	日历寿命/年	充放效率/%	容量衰减 /(%/a)	充电价格 /[CNY/(kW·h)]
2020	锂离子电池	1	4	300	800	6000	350	12	88	1.8	0.3
	钠离子电池	1	4	300	1500	6000	350	12	88	1.8	0.3
	全钒液流电池	1	8	1800	2500	15000	350	30	82	0.7	0.3
	钠硫电池	1	4	2000	2000	6000	350	30	85	0.7	0.3
	铅炭电池	1	4	300	700	2000	350	8	85	2.8	0.3
	抽水蓄能	1	8	5000	100	—	350	50	75	0.4	0.3
	压缩空气	1	8	8000	100	—	350	40	55	0.6	0.3
	储氢	1	8	15000	50	6000	350	30	40	—	0.3
2060	锂离子电池	1	4	134	357	19572	350	26	95	0.8	0.3
	钠离子电池	1	4	134	193	19572	350	26	95	0.8	0.3
	全钒液流电池	1	8	352	1114	33121	350	66	89	0.3	0.3
	钠硫电池	1	4	891	891	10884	350	30	92	0.7	0.3
	铅炭电池	1	4	134	655	4416	350	18	88	1.3	0.3
	抽水蓄能	1	8	7444	149	—	350	50	78	0.4	0.3
	压缩空气	1	8	3566	67	—	350	40	60	0.6	0.3
	储氢	1	8	6686	50	10884	350	30	—	0.7	0.3

地区	项	光伏配储能	风电配储能
青海	基准弃电率	8.0%	4.7%
	配储弃电率	4.26%	3.41%
	可接受储能投资	482 CNY/(kW·h)	116 CNY/(kW·h)
新疆	基准弃电率	4.6%	10.3%
	配储弃电率	1.85%	8.98%
	可接受储能投资	234 CNY/(kW·h)	167 CNY/(kW·h)
甘肃	基准弃电率	2.2%	6.4%
	配储弃电率	0.4%	5.02%
	可接受储能投资	195 CNY/(kW·h)	202 CNY/(kW·h)

弃电率/%	储能功率配比	储能时长/h	可接受储能投资成本/[CNY/(kW·h)]
0	1∶1	181	6.3
5	1∶1	82	13.0
10	1∶1	20	48.2

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