In the context of pursuing global carbon neutrality, as an important type of renewable energy sources, the offshore wind power has received widespread attention. This study is dedicated to solving the uncertainty and volatility problems of wind power generation, and the time series production simulation approach is utilized to evaluate the impact arisen from different configurations of pumped hydro storage (PHS) and battery energy storage (BES) in offshore wind power systems. The study quantifies the selection of optimal energy storage configuration by simulating the system operating characteristics under various energy storage configurations and comparing the performance of each scheme using the analytic hierarchy process (AHP). The results show that battery storage has better effects than pumped storage in terms of regulating wind power output fluctuations, improving system responsiveness, and realizing supply-demand balance. These results provide valuable technical references for guiding the design of energy storage systems in actual offshore wind farm projects, optimizing operation strategies and improving the overall performance of offshore wind power systems.