ENERGY STORAGE SYSTEM PLANNING FOR TIDAL STREAM ENERGY IN LARANTUKA STRAIT, EAST NUSA TENGGARA

• Main Author: Naufal, Irfan
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/69098
• Institution: Institut Teknologi Bandung

Renewable energy has become a hot topic discussed in recent years in various countries. Indonesia has committed at COP26 in Glasgow, Scotland to achieve Net Zero Emission in 2060 by targeting the renewable energy installed capacity to reach 23% by 2025. The number of straits in Indonesia causes tidal currents to generate electrical energy for tidal turbine (PLTAL) potentially. However, one of the biggest challenges of renewable energy is intermittency. Intermittent describes the production of electricity that depends on environmental conditions. The tidal stream energy productions vary following moon and sun positions. There are daily and fortnightly variations known as neap spring variations. Meanwhile, electricity demand is also vary during the day and night. This final project focuses on the analysis of the energy that can be stored and the potential implementation of energy storage from tidal stream turbines in the Larantuka Strait, East Nusa Tenggara to be applied so that the energy produced from tidal turbine can be utilized more optimally. Power extraction data of A2 and A3 single-array turbines were used and the power capacities were varied with values of 0.5MW, 0.7MW, and 1.0MW per turbine. In this work, the calculation and analysis of 6 pairs of turbine configuration variations and generator capacity with respect to the average power load in Larantuka and Adonara Islands in 2022, 2035, and 2050 are determined. reduce the use of existing PLTD with electric power from tidal turbine. As a result, energy storage is used with a lithium-ion battery type by considering energy density and efficiency. Then in Larantuka Subdistrict, 1.0MW A3 Turbine configuration was applied with a battery storage capacity of 81.56 MWh in 2022, 145.67 MWh in 2035, and 299.67 MWh in 2050. While on Adonara Island, 0.7MW A3 Turbine configuration was applied with battery storage capacity is 46.11 MWh in 2022, 88.78 MWh in 2035, and 259.11 MWh in 2050. As for the application of energy from single-array turbines and energy storage in Larantuka District and Adonara Island at the same time only optimal in 2022 A multi-array turbine configuration is required to be implemented in the future.