Perpustakaan Digital ITB

The disparity between the realized solar energy utilization in Indonesia of 0.135 GW and its theoretical solar energy potential of 207.8 GW means Indonesia still has huge unexploited energy potential. The choice of renewable energy technology that should be used in each region would of course differs with its local characteristics. In Indonesia, where the land mass area is less than a third of its water mass area, floating solar panels (FPV) / floating photovoltaic is seen as one of the most promising technology to best utilize the untapped solar energy potential. However, there is still huge knowledge gap in terms of how the FPV structures behave in sea environments. This study is aimed to examine the hydrodynamic behaviour of the FPV suport structure in the ocean for the given design criteria. Furthermore, the most effective mooring configuration and heading for FPV support structure is shown in this study. The modeled FPV structure has a dimension of 36.54 x 35.44 m with mounted PV, walkway floaters, PV floaters, and moorings. The mooring’s nominal diameter is 64 mm Nylon with 8-strands while a typical HDPE FPV floater is used. In this study, the FPV is modeled in ORCAFLEX as 6DOF buoy that is connected by line element to imitate the floater connection stiffness. The hydrodynamic response analysis under regular wave is done in time domain, while the response analysis under random waves is done in the frequency domain. The most effective mooring’s configuration is found to be a main-to-branches mooring: the main mooring connects the anchor point to the branch connection point, while the branch moorings connects the branch connection point to the fairlead. The final result shows the best configuration is the one with 168.136 m of mooring line and 2 to 4 branches on each main line. As expected, the mooring tension is found to be larger when the environmental loading is perpendicular to the PV’s face area.