Prevention of Output Suppression through Heat Pump Water Heaters for High-Penetration Residential PV Systems for Long-Term Operation

Yusuke Miyamoto, Yasuhiro Hayashi

    研究成果: Article査読

    抄録

    There is a danger of output suppression of high-penetration residential photovoltaic systems due to voltage increase. It is necessa1ry to install new technology to prevent the occurrence of such phenomenon. Therefore, we focused our attention on heat-pump water heaters (HPWHs). HPWHs are usually used to heat water during nighttime because electricity prices are cheaper than during the daytime for the load leveling in Japan. So they can be used as a countermeasure without additional cost if they are operated during the daytime. However, HPWHs do not have sufficient capacity to absorb inverse energy at each residence. Thus, HPWH operation must be optimized to minimize output suppression loss. In this research, we selected four typical sunny days in spring, summer, autumn, and winter. The optimal HPWH operation was calculated by numerical simulation. The optimal monthly HPWH operation was investigated using the weather forecast assuming actual operation in each season.

    本文言語English
    ページ(範囲)32-48
    ページ数17
    ジャーナルElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
    201
    2
    DOI
    出版ステータスPublished - 2017 11 1

    ASJC Scopus subject areas

    • エネルギー工学および電力技術
    • 電子工学および電気工学

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