Meteorological risk identification and assessment of offshore wind farms

Abstract During the construction and operation period, an offshore wind farm is exposed to a variety of meteorological threats, which could lead to severe damages and massive financial loss. In this work, we analyse meteorological risks of offshore wind farms in the coastal areas of the south-east Jiangsu Province. Firstly, we identified the risk factors through the Delphi Method and analysis of historical data. The five major risks include typhoon, lightning, extreme temperatures, salt frog, and oceanic disasters caused directly by meteorological disasters. Then, using the Analytic Hierarchy Process (AHP), we established index module of each layer and calculated the risk value of each influence factor. After that, we established the judgement matrix and the weight of each factor. Based on that, we got the comprehensive risk value and considered it as a medium risk. According to the weighting module, we also came to the conclusion that typhoon contributes most to the meteorological disaster of offshore wind farms, with a weight of 0.3937.