| Abstrak/Abstract |
Indonesia is an archipelagic nation with thousands of islands spread from Sabang to Merauke, whose the electricity supply is not evenly distributed (electrification ratio 87% -2016). On major islands such as Java, Sumatra, Kalimantan and Sulawesi, the electrical system is realatively sufficient. However, in another part (Papua, Maluku, Nusa Tenggara) and small islands, it is still insufficient and need to be developed, especially for small scale power system. Obstacles on developing small-scale power systems are high investment and operating costs. Moreover, diesel power plan is not environmentally friendly and the fuel transportation cost is high due to geographical limitation of islands. Small-scale power systems demand for isolated islands/ regions can be met by utilizing microgrid system. This system is based on renewable energy for supplying electric power. One of microgrid application in Indonesia that has been implemented are in Sumba, Nusa Tenggara Timur (NTT) by utilizing energy mix of diesel, micro hydro and solar generation and in Karampuang, West Sulawesi by utilizing solar generation. The government also provides support by issuing rules that allow the purchase of energy from mini and micro scale power plants from renewable sources. However, connecting those small-scale power plants with the grid is not a simple matter. This research is a further research from previous research where microgrid system prototype has been developed with distribution network model, micro hydro power plant simulator, diesel power plant simulator, solar photovoltaic simulator and telemetering system. This research will consider the system stability, dynamic operation, protection system, power quality, regulation, and loss of grid. Experimental work will be conducted in the testbed using the characteristic similar from the existing microgrid systems in Nusa Tenggara Timur (NTT) or West Sulawesi. The output is complete microgrid prototype system of hardware, software and standard operating procedure book (SOP) for research and education purposes. |
