Optimal Dispatch of Microgrid Clusters Considering Energy Storage Life and Communication Failures

doi:10.16182/j.issn1004731x.joss.22-1110

Abstract

Abstract:

To ensure the economy and stability of microgrid operation, the power fluctuations of renewable energy source (RES) and the lifetime characteristics of battery energy storage system (BESS) should be considered. The influence of charging and discharging depth and rate on the lifetime of BESS is researched, a model of battery energy storage system for real-time optimal scheduling is established, and thealternating direction method of multipliers is adopted for the distributed optimal scheduling of microgrid clusters. The distributed optimization method does not require any global information and can protect the privacy of microgrid in the maximum extent . Simulation results show that the proposed method can make the energy storage battery operate in a high SoC and still can make the system stable and reliable in case of communication failure.

Key words: microgrid cluster, energy storage battery life, alternating direction method of multipliers, distributed optimization, communication failures

CLC Number:

TP319.9

Jiao Jianfang, Wang Anjie, Wang Guang, Xie Jiale. Optimal Dispatch of Microgrid Clusters Considering Energy Storage Life and Communication Failures[J]. Journal of System Simulation, 2024, 36(2): 352-362.

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MG	风机额定功率/kW	光伏额定功率/kW	BESS额定功率/kW	BESS额定容量/(kW·h)	BESS初始投资成本/万元
1	500	300	300	1 200	120
2	550	400	280	1 200	120
3	－	500	360	1 600	160
4	500	－	400	1 600	160
5	450	300	350	1 500	150

DG	a_g	b_g	c_g	柴油机额定功率/kW
1	0.001 24	0.32	3.21	200
2	0.001 24	0.32	3.21	200
3	0.000 50	0.48	5.03	300
4	0.001 24	0.32	3.21	200
5	0.001 24	0.32	3.21	200