Hourly Variation of Wind Speeds in the Philippines and Its Potential Impact on the Stability of the Power System

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  • Kevin Ray Español Lucas
    Graduate School of Environmental Science, Hokkaido University, Sapporo 060-0808, Japan
  • Tomonori Sato
    Faculty of Environmental Earth Science, Hokkaido University, Sapporo 060-0808, Japan
  • Masamichi Ohba
    Central Research Institute of Electric Power Industry (CRIEPI), Abiko 270-1194, Japan

Description

<jats:p>Wind energy development has been limited by concerns associated to the varying features in wind speed which tends to destabilize the power system. This study aims to clarify the variability of winds within a day in the Philippines, specifically the hourly changes of onshore horizontal winds at 100-m hub-heights. A whole one-year experiment using the Weather Research and Forecasting model shows that onshore wind speeds decrease during the transitional hours between land breeze and sea breeze. The decreases in wind speed are most significant over coastal regions with high sloping topography. The extreme decreases in wind speed during morning hours, due to the natural processes, are found to often occur at the same time as the extreme electricity undersupply caused by the morning increase in energy demand. This result warns that the power system stability in the Philippines may become more sensitive to the variability of wind as the share of wind energy generation increases in the future. The findings of this study can contribute to promote sustainability in the operation of existing wind-reliant power systems and planning of future wind energy developments.</jats:p>

Journal

  • Energies

    Energies 14 (8), 2310-, 2021-04-20

    MDPI AG

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