Design and performance analysis of standalone solar photovoltaic power system for health facility in EKET using PVSYST simulation software

In this research, design and performance analysis of standalone solar photovoltaic (SSPV) power system for health facility in Eket using PVSyst simulation software is presented. Specifically, standalone solar photovoltaic (SSPV) power system was designed and simulated with PVsyst for two scenarios for a hospital in Eket Akwa Ibom State. In the first scenario, the SSPV power system was design to eliminate loss off load without any alternative energy source other than the SSPV power system. In the second scenario, the SSPV power system was design to allow for some loss off load giving room for alternative back-up energy source other than the SSPV power system. The case study hospital has daily load demand of 455,754.00 kWh per day which approximates to a 24 hours a day energy consumption of an average load of 18989.75 Watt load. The annual total solar radiation of the site is 1717.2  kWh/m² while the annual mean for the ambient temperature is 24.9°C. The results shows that the scenario 1 has about 7.9% energy output above that of scenario 2. The unused energy in scenario 1 is about 26.5 % higher than that of scenario 2.  The energy supply in scenario 2 is about 2% short of the load demand while the scenario 1 has no energy supply shortage.  The energy supply shortage in scenario 1 cause the 2 %missing energy or loss of load with the attendant 179 hours of loss of load duration. In all, with detailed loss of load analysis up to hourly level, it is possible to make adequate prior arrangements for managing the expected loss of load incidences.