The elastic mooring design of tidal current generation power device

Tidal current energy is a kind of new energy with high utilization value and huge potential.Floating tidal current power station is a typical type of tidal current energy development.After the electric power generation device is transported to the destination,mooring system is necessary for the long-term parking.So,it is essential to calculate and analyze the motion performance of the mooring system,reasonably design the mooring system to prevent capsizing of the floating station.In this paper,the authors design a mooring system of 2×100 kW floating tidal power station,and try to join non-linear elastic stretch materials(high elastic cable) into the mooring-line.According to the characteristics of the station,three different styles of mooring line arrangement will be designed.And the time-domain coupling analysis of the whole mooring system is done by the software AQWA,and different schemes are compared and analyzed.The results show that joining the high elastic cables into mooring line can effectively reduce the maximum tension of the mooring chain.What’s more,the high elastic cable has small mass,therefore,joining the high elastic cables into mooring line can reduce the amount of ordinary mooring chains,thus cutting down the weight of mooring system.After many times of experiments and calculations,this paper offers the final form of mooring line in the premise of satisfying security.It is testified that the mooring style joined with high elastic cable is suitable for floating tidal current power station.It can meet the special requirements of the mooring system in the condition of strong current and large load.