Achieving simulation as REBIANA Village Case Study of Photovoltaics System-Based Residential Distribution Grid
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The growing demand for photovoltaic (PV)-based buildings and increasing utilization of DC electronic loads, along with decreasing DC appliances prices, have resulted in attraction of DC networks for residential consumers. The main aim of this paper is to present an economic study of a PV system-based DC residential distribution network. This includes designing and simulation of the system that is based on DC residential distribution network. Electrical Transient Analyzer Program (ETAP) software can be used for designing and modelling of the PV system components for a single house and for the distribution grid. The process starts with the PV module, DC/DC converter, battery, and the load. It takes into account all the ratings of the specific components for the whole system. Subsequently, the system efficiency has been evaluated for a common DC home at 24V, 48V, and 110V DC, and compared to the 220V AC through the simulation. Power losses will be through the conversion and distribution. Based on the obtained results using American Wire Gauge AWG-6 for a single house, it is found that the efficiency of a 48V DC system is higher than that of 220V AC system. It is also found that the usage of 48V DC leads to better efficiency compared with that of other system. This states that the efficiency of the system will increase with increasing of the main bus voltage. At the rest of the paper, the installed capacity for a single house is evaluated at 10 KW per house and this is results in a 2 MWp total installed PV system for 200 houses. This installed capacity can produce 4344 GWh per year. The installed PV system could improve the Libyan grid by reducing losses. Moreover, the installed PV capacity saves around 592,956,000 LD yearly and prevents emission of 328.82 million kg, 5,408,890 million kg and, 4963617743 million kg from gas, heavy fuel, and light fuel respectively.
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