Research on key technologies of mobile energy storage system under the target of carbon neutrality

doi:10.19799/j.cnki.2095-4239.2021.0494

Abstract

Abstract:

With the clear goal of carbon neutralization, new energy will gradually become the pillar energy of power system. Facing the characteristics of high proportion of renewable energy and high proportion of power electronic equipment in the power system, the difficulty of real-time power supply and demand balance will further increase. As the main way to improve the quality of new energy generation and stabilize the fluctuation of power grid, advanced energy storage technology has attracted much attention, but it is difficult to realize large-scale promotion due to economic constraints. The mobile energy storage system with high flexibility, strong adaptability and low cost will be an important way to improve new energy consumption and ensure power supply. It will also become an important part of power service and guarantee in the new power system in the future. Firstly, this paper combs the relevant policies of mobile energy storage technology under the dual carbon goal, analyzes the typical demonstration projects of mobile energy storage technology, and summarizes the research status of mobile energy storage technology, in order to provide reference for the multi scene emergency application of mobile energy storage technology; Then, based on the application scenario characteristics and demand analysis, the mobile energy storage technology index system is established, and the dynamic game adjustment method of mobile energy storage system cluster based on event and power regional characteristics is constructed according to the construction principle of mobile energy storage cooperation platform; Finally, combined with the double carbon goal and the demand of new power system, the application of mobile energy storage system technology is summarized and prospected.

Key words: mobile energy storage system, demonstration project, technical indicators, intelligent dispatching technology, scenario application

CLC Number:

TM 911

Jianlin LI, Zedong ZHANG, Yaxin LI, Yi ZHOU, Yunli YUE. Research on key technologies of mobile energy storage system under the target of carbon neutrality[J]. Energy Storage Science and Technology, 2022, 11(5): 1523-1536.

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示范工程名称	主要作用	主要特点
山西省石玉县老千山风电场示范项目	提升电力系统对风电场的消纳能力	可进行工厂化生产，具备环境适应性强、安装简便、可扩展性高
福建安溪移动式储能示范项目	对电力系统进行局部削峰调谷，均衡用电负荷	移动灵活、可就地安装、辅助服务多元化
甘肃酒泉瓜州干河口风电场储能示范工程	平抑风电并网对电力系统产生的波动	平抑风电输出有功功率的波动上层能量管理策略
吉林来福风电场储能示范项目	提升风电就地消纳能力，同时提高配电网的电能质量	风电-蓄热式电锅炉-储能联合运行控制策略
深圳欣旺达居民园区光储微网示范工程	保证园区在系统突然断电情况下依然安全稳定运行	光储微网上层能量管理策略

项目类型		容量规模	功率规模	功率密度	响应时间	循环次数/次	寿命/年	充放电效率	投资成本/ [元/(kWh)]
电化学储能技术	铅酸电池	百MWh	40～80	150～500	ms～min	500～3000	5～8	70%～90%	800～1000
	磷酸铁锂电池		80～170	1500～2500		2000～10000	10	>90%	8000～1600
	钛酸锂电池		60～100	>3000		>10000		>90%	1500
	镍钴锰酸锂		120～300	3000		1000～5000		>90%	1200～2400
	钠硫电池		150～300	22		4500	15	75%～90%	4000
	全钒液流电池		12～40	50～100		>15000	>10	75%～85%	2500～3900
物理储能	飞轮储能	MWh	20～80	>4000	ms	百万次	20	85%～95%	5000～15000
物理储能	压缩空气储能	GWh	3～6 Wh/L	0.5～2.0 W/L	min	>1000	30	40%～75%	1000～1500
电磁储能	超级电容储能	MWh	2.5～15	1000～10000	ms	百万次	15	>90%	9500～13500
电磁储能	超导储能	MWh	1.1	5000	ms	/	30	>95%	90000

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