離岸浮動式風波雙能發電系統之創新開發與研究

INNOVATIVE DEVELOPMENT OF OFFSHORE WIND-WAVE ENERGY SYSTEMS FOR TAIWAN

由於全球可再生能源需求大增，海洋再生能源系統獲得更多關注。為了提升海域發電場址之單位面積發電量，本研究設計一混合能源系統，結合波浪發電機組與浮動式風力發電機組，以克服單一發電系統的裝置容量限制。本研究將針對臺灣特定海域之海況，進行混合能源系統之設計。將透過HydroD獲得水動力係數，並於SIMA中建立風波雙能發電系統之模型。在完成運動響應分析後，預估波浪發電機組之發電功率與均化能源成本。最終研究設計之波浪發電機組在示性波高0.25 m下，最大發電功率可達3.3 kW，且波浪發電機之總體均化能源成本約為359 TWD/kWh。本計畫建立風波雙能發電系統用於臺灣特定海域之評估方法，期許此次研究可供混合能源系統於臺灣海域之設計參照和經濟性評估。

Driven by Net Zero goal by 2050, marine renewable energy systems have received more attentions in recent years. In order to enhance the power generation per unit space of an offshore energy farm, this study proposes a hybrid energy system that integrates wave generators and floating wind turbines, aiming to overcome the capacity constraints of single renewable energy system. The objective of this study is to design a hybrid energy system based on the sea conditions in specific offshore regions in Taiwan. After the design of the wind-wave energy system, the hydrodynamic coefficients of the system will firstly be obtained using Sesam HydroD. Then, the complete wind-wave energy system model will be established in Sesam SIMA and simulated based on the global integrated response analysis. Using the design load cases defined according to Taiwan’s sea condition, the power performance of the wave-powered generators and levelized cost of wave energy were calculated. The results showed that the design of the wave generator can produce up to 3.3 kW of power under the significant wave height of 0.25 m. The average levelized cost of energy for wave energy is approximately 359 TWD/kWh. The methodology in this study has been developed for the wind-wave energy system to be used in the specific offshore sites in Taiwan. This research is expected to provide a design reference and methodology of economic evaluation of hybrid energy systems in Taiwan.