OPTIMIZATION MODEL FOR RESERVOIR WATER BODY SURFACE AREA USE IN THE FLOATING PHOTOVOLTAIC POWER PLANT

Abstract

This research intends to optimize the use of reservoir inundation surface area as the Floating Photovoltaic Power Plant (PLTS). The research location is in the Waduk Jatigede, Cijeungjing Village-Jatigede District-Sumedang Regency, West Java Province, Indonesia. The Jatigede is a multi-function reservoir. This reservoir is used for raw water, irrigation, flood control, recreation, sport, and Floating Photovoltaic Power Plant (PLTS). Based on the data of solar radiation intensity, wind velocity, and surface temperature, this research intends to analyze the effect of EBT on the optimization model for using reservoir water surface.The methodology includes the optimization of reservoir water body surface area use for the Floating Photovoltaic Power Plant (PLTS) using Simplex Linear Programming. The optimization is implemented under the three scenarios as follows: 1) Design of floating PLTS island area with attending the bathymetry measurement; 2) Design of floating PLTS island area without attending the bathymetry measurement by the dimension is 160 m x 320 m; 3) Design of floating PLTS island area without attending the bathymetry measurement by the dimension is 320 m x 320 m. The results show that 1) The utilization of reservoir inundation surface area based on the optimization result is 16,703,000 m2 or 1,670.3 ha (42.25%) from the total of reservoir inundation surface area that is 3,953 ha with the electrical production of PLTS is 3,078 MWp or in average is 5,617 GWp per-year; and 2) the evaluation of Waduk Jatigede performance indicates that the operation pattern based on the simulation by using the Simplex Method can fulfil the demand. The last result of simulation has the reliability of 79.17%, the volatility is 80.00%, and the vulnerability is 28.74%. It means that the reservoir has the ability in amount of 79.17% for fulfilling the demand. Meanwhile the reservoir ability for returning back to the satisfied condition from the failure condition to fulfil the demand is 82.92%, and in the case of the failure, 28.74% of demand cannot be fulfilled with the average deficit is 7.67 million m3 per 15 days every failure event.