Capacity configuration method for a battery-SMES hybrid energy storage system in a DC microgrid

doi:10.3969/j.issn.2097-0706.2023.09.008

Abstract

Abstract:

The configuration of a hybrid energy storage system（HESS） can effectively mitigate the adverse effects of PV power output volatility on the safe and reliable operation of a DC microgrid. In order to make better use of the advantages of superconducting magnetic storage（SMES），such as fast response，high power density，high efficiency and the ability to store electricity without energy loss，an energy management strategy is proposed based on the complementarity of a HESS in a battery pack，to improve the economy of HESSs. Then， life cycle cost（LCC）model and its constraints are proposed. The capacity optimization configuration of the HESS can effectively reduce its system cost. Under the premise of satisfying the power requirements on the system，with the LCC as the objective function， the configuration of the HESS is obtained by particle swarm optimization with acceleration coefficients. The effectiveness of the proposed capacity allocation strategy is verified by a case in a microgrid.

Key words: photovoltaic power generation, DC microgrid, hybrid energy storage system, superconducting magnetic energy storage, capacity configuration, battery

CLC Number:

TK01

QIAO Lihui, LI Mingche, ZHANG Rui, FANG Zongjie. Capacity configuration method for a battery-SMES hybrid energy storage system in a DC microgrid[J]. Integrated Intelligent Energy, 2023, 45(9): 59-64.

Figures/Tables 9

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项目	蓄电池	SMES
额定电压/V	200	1 200
额定容量/(A⋅h)	50.0	2.5
充电效率	0.80	0.99
放电效率	0.80	0.99
放电深度	0.8	—
运行系数	0.10	0.01
维护系数	0.02	—
循环次数	1 500	—
处理系数	0.08	0.02

优化参数	配置结果
蓄电池/个	388 640
SMES/个	41 360
f_LPSP	0.036 1
最小成本/元	1 647 200

优化参数	配置结果
蓄电池/个	348 470
SMES/个	19 910
f_LPSP	0.036 0
最小成本/元	1 470 700

优化参数	c₁≤2，c₂>2	c₁>2，c₂≤2
蓄电池/个	336 580	347 590
SMES/个	17 910	16 010
f_LPSP	0.036 1	0.036 0
最小成本/元	1 420 100	1 465 700