Integrated Intelligent Energy ›› 2025, Vol. 47 ›› Issue (7): 82-92.doi: 10.3969/j.issn.2097-0706.2025.07.009

• New Energy and Energy Storage System Optimization • Previous Articles    

Day-ahead dispatch optimization for integrated energy system in building prosumer community using generalized energy storage

ZHANG Debin1,2(), LIN Wenye1,2,*(), HE Zixuan1,3(), YUE Xinru1,4(), SONG Wenji1,2(), FENG Ziping1,2(), FARID Mohammed Mehdi5(), USHAK DE GRAGEDA Svetlana Nikolaevna6()   

  1. 1. Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China
    2. School of Energy Science and Engineering,University of Science and Technology of China,Guangzhou 510640,China
    3. School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou 510006,China
    4. School of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China
    5. Department of Chemical and Materials Engineering, University of Auckland, Auckland 1142, New Zealand
    6. Department of Chemical Engineering and Mineral Processes,University of Antofagasta,Antofagasta 02800,Chile
  • Received:2024-10-30 Revised:2024-12-16 Published:2025-07-25
  • Contact: LIN Wenye E-mail:zhangdb@ms.giec.ac.cn;linwy@ms.giec.ac.cn;hinsho0114@iCloud.com;yuexr@ms.giec.ac.cn;songwj@ms.giec.ac.cn;fengzp@ms.giec.ac.cn;m.farid@auckland.ac.nz;svetlana.ushak@uantof.cl
  • Supported by:
    CAS President's International Fellowship Initiative(2024DE0003);International Science and Technology Cooperation Base Project of Guangdong Province(2023A0505090006)

Abstract:

Integrated energy system is an important approach for green and low-carbon transformation of the energy structure. It can achieve multi-energy complementarity and high-ratio renewable energy consumption through generalized energy storage (i.e. a combination of flexible loads and traditional energy storage). However, there is a lack of quantitative analysis on the economic performance of using generalized energy storage in integrated energy systems, particularly in load-shifting capability and cost-effectiveness. An integrated energy system for a building prosumer community, employing generalized energy storage, was developed in this study, and evaluation metrics for load-shifting capability and economic performance of generalized energy storage were proposed. A day-ahead economic dispatch optimization of the integrated energy system was formulated to maximise operational economic benefits. Four optimization scenarios were designed to compare the contributions of traditional energy storage, flexible loads, and both generalized energy storage approaches to the load-shifting capability and economic benefits of the proposed system. The optimization scenarios were resolved using the Yalmip toolbox and Gurobi solver in Matlab. The optimization results showed that generalized energy storage reduced the daily operational cost of the integrated energy system by 24.0%. Both the load-shifting capability and economic performance of the integrated energy system with the generalized energy storage outperformed traditional energy storage, while the flexible load management provided superior economic performance compared to traditional energy storage. However, in the case with high compensation price, the economic performance of flexible load management might be less favorable than that of traditional energy storage.

Key words: integrated energy system, generalized energy storage, flexible load, load shifting, day-ahead economic dispatch optimization

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