臺灣能源期刊第12卷第3期-臺灣能源期刊論文全文-能源期刊-能源知識庫

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臺灣能源期刊論文全文

出刊日期：September, 2025

Title: Design and Analysis of the Mooring Line for a 15 MW Semi-Submersible Wind Turbine

摘要: 為推動離岸風電發展，本研究以新竹海域(水深100公尺)為目標場址，針對搭載VolturnUS-S半潛式平台的15 MW浮式風機進行繫纜設計分析。模擬採用三條R3等級鐵鍊，標稱直徑185公厘，單一繫纜長度650公尺，基於IEA 15 MW參考風機及本土環境條件(風速57 m/s、波高11.9 m、週期13.8 s、海流1 m/s)，進行極端與運轉條件下的數值分析。結果顯示，繫纜設計在極限限度狀態(ULS)及可運轉限度狀態(SLS)下均符合DNV標準，平台最大傾斜角(Pitch: 11.80o，Roll: 14.98o)及位移(Surge: 24.62 m，Sway: 26.97 m)均在建議範圍內，繫纜張力低於0.95倍最小破斷力(22,286 kN)。本設計適用於臺灣海域的颱風等極端條件，具實用價值。

Abatract: To promote offshore wind power development, this study focuses on the Hsinchu sea area (with a water depth of 100 m) as the target site and conducts a mooring design analysis for a 15 MW floating wind turbine mounted on the VolturnUS-S semi-submersible platform. The simulation employs three R3-grade studless chains, each with a nominal diameter of 185 mm and a length of 650 m, based on the IEA 15 MW reference wind turbine and site-specific environmental conditions (wind speed: 57 m/s, significant wave height: 11.9 m, wave period: 13.8 s, current speed: 1 m/s). Numerical analyses were carried out under both extreme and operational conditions. The results indicate that the mooring system complies with DNV standards for both the Ultimate Limit State (ULS) and the Serviceability Limit State (SLS). The maximum platform tilt angles (Pitch: 11.80o, Roll: 14.98o) and displacements (Surge: 24.62 m, Sway: 26.97 m) fall within recommended limits, and the mooring line tensions remain below 0.95 times the minimum breaking load (22,286 kN). This mooring design is suitable for extreme conditions such as typhoons in the Taiwan Strait, demonstrating its engineering applicability and practical value.