Installed generator capacity determination method with variable weather-based SOC operation for island-alone off-grid system

Souichiro Kama, Jun Yoshinaga, Wataru Hirohasi, Yasuhiro Hayashi, Masato Watanabe, Hikaru Takigasaki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Off-grid power systems have been installed in many countries to provide a stable electricity supply to remote island areas. However, off-grid systems with internal-combustion engines, such as diesel-turbine cogeneration systems, have significant operating costs, e.g., high transport, management, and fuel costs, and additional complications. In this paper, installation of an off-grid system using renewable energy, i.e., a photovoltaic (PV) and battery energy storage system (BESS), is considered and a cost-minimizing installation method is proposed. The optimal parameters for managing the BESS state of charge (SOC) using weather information, which can reduce the operational expense for an installed off-grid system, are verified. Hence, the PV output, BESS capacity, number of diesel-engine (DE) operations, and appropriate BESS SOC are determined using the proposed method, actual load, and PV output data.

    Original languageEnglish
    Title of host publication2017 IEEE Innovative Smart Grid Technologies - Asia
    Subtitle of host publicationSmart Grid for Smart Community, ISGT-Asia 2017
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1-5
    Number of pages5
    ISBN (Electronic)9781538649503
    DOIs
    Publication statusPublished - 2018 Jun 8
    Event7th IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2017 - Auckland, New Zealand
    Duration: 2017 Dec 42017 Dec 7

    Other

    Other7th IEEE Innovative Smart Grid Technologies - Asia, ISGT-Asia 2017
    CountryNew Zealand
    CityAuckland
    Period17/12/417/12/7

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    Keywords

    • BESS
    • Microgrid
    • Off grid
    • Offshore installations
    • Photovoltaic systems
    • Power grids

    ASJC Scopus subject areas

    • Artificial Intelligence
    • Computer Networks and Communications
    • Energy Engineering and Power Technology
    • Electrical and Electronic Engineering
    • Control and Optimization
    • Safety, Risk, Reliability and Quality

    Cite this

    Kama, S., Yoshinaga, J., Hirohasi, W., Hayashi, Y., Watanabe, M., & Takigasaki, H. (2018). Installed generator capacity determination method with variable weather-based SOC operation for island-alone off-grid system. In 2017 IEEE Innovative Smart Grid Technologies - Asia: Smart Grid for Smart Community, ISGT-Asia 2017 (pp. 1-5). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISGT-Asia.2017.8378329