Capacity optimization of battery and thermal energy storage systems considering system energy efficiency and user comfort

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-02-08 DOI:10.1016/j.epsr.2025.111480

Yuanyuan Chen , Shaobing Yang , Yibo Wang , Jianhong Guo , Wanqi Zhang , XiangYan Yang , Mingli Wu

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引用次数: 0

Abstract

This study explores the configuration challenges of Battery Energy Storage Systems (BESS) and Thermal Energy Storage Systems (TESS) within DC microgrids, particularly during the winter heating season in northwestern China. A novel two-layer optimization algorithm is proposed to effectively coordinate system configuration and operation, achieving optimal multi-objective outcomes that enhance energy efficiency and user comfort. An energy efficiency assessment model for power loss in DC microgrids is developed, alongside models for evaluating user electrical and thermal comfort under demand response (DR) scenarios. The enhanced NSGA-II algorithm, integrated with the Gurobi solver, demonstrates a 50 % reduction in solution time compared to traditional optimization methods. Results indicate that the integration of TESS with BESS leads to a 61.57 % reduction in BESS capacity requirements while improving the Cost Savings Ratio (CSR) by 2.43 times, System Energy Efficiency (SEE) by 12.46 %, and User Comfort Level (UCL) by 3.75 %. Sensitivity analysis reveals that adjusting grid connection limits can enhance CSR by 10.65 %, and modifications to thermal balance can improve CSR by 7.68 %. These findings provide essential insights for the design of efficient, cost-effective, and user-friendly DC microgrids, contributing to the advancement of smart grid technologies in various energy environments.

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.