考虑系统能效和用户舒适度的蓄电池和热能存储系统容量优化

IF 4.2 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

摘要

本研究探讨了直流微电网中电池储能系统（BESS）和热能存储系统（TESS）的配置挑战，特别是在中国西北地区的冬季采暖季节。提出了一种新的两层优化算法，有效地协调系统配置和运行，实现多目标优化结果，提高能源效率和用户舒适度。开发了直流微电网功率损耗的能效评估模型，以及需求响应（DR）情景下用户电气和热舒适评估模型。与传统的优化方法相比，增强的NSGA-II算法与Gurobi求解器集成在一起，可以减少50%的求解时间。结果表明，将TESS与BESS集成后，BESS容量需求降低了61.57%，成本节约比（CSR）提高了2.43倍，系统能源效率（SEE）提高了12.46%，用户舒适度（UCL）提高了3.75%。敏感性分析表明，调整并网限制可使CSR提高10.65%，调整热平衡可使CSR提高7.68%。这些发现为设计高效、经济、用户友好的直流微电网提供了重要见解，有助于在各种能源环境中推进智能电网技术。

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

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.