부유식 파력발전용 전력이송 케이블의 초기설계

Abstract

The floating Wave Energy Conversion system moored in the deep ocean produces the abundant electricity by converting the wave energy to the mechanical energy in the open sea. The produced electricity is transmitted to the land through a electric cable which is divided with two categories the static cable on or under the seabed and the dynamic cable suspended between a floater and the seabed. A dynamic cable exposed to the wave, current and floater’s motion must inevitably be designed to keep its safety. In this study, the preliminary design for a dynamic cable of a floating WECs is carried out. The requirements for a dynamic cable are defined as follows The tension and curvature of a floater-following cable must be within the allowable values. A touch-down cable on the seabed is designed not to be rubbed by the dynamic motion of a dynamic cable. The dimension of a buoyancy module, the characteristic length(suspended length/distance between a floater and the end of a dynamic cable), the position of the end of a dynamic cable, and the interaction with the mooring lines are considered as the design parameters. The safety of the designed cable is checked depending on the parameters in the dynamic analysis with the commercial software of Orcaflex. The bending stiffener to prevent excessive bending stress near a connection point of the cable can be determined through the designed dynamic cable.ctric cable which is divided with two categories the static cable on or under the seabed and the dynamic cable suspended between a floater and the seabed. A dynamic cable exposed to the wave, current and floater’s motion must inevitably be designed to keep its safety. In this study, the preliminary design for a dynamic cable of a floating WECs is carried out. The requirements for a dynamic cable are defined as follows The tension and curvature of a floater-following cable must be within the allowable values. A touch-down cable on the seabed is designed not to be rubbed by the dynamic motion of a dynamic cable. The dimension of a buoyancy module, the characteristic length(suspended length/distance between a floater and the end of a dynamic cable), the position of the end of a dynamic cable, and the interaction with the mooring lines are considered as the design parameters. The safety of the designed cable is checked depending on the parameters in the dynamic analysis with the commercial software of Orcaflex. The bending stiffener to prevent excessive bending stress near a connection point of the cable can be determined through the designed dynamic cable.