A simple method in sizing related to the reliability supply of small stand-alone photovoltaic systems

This paper presents a simple method for sizing small stand-alone photovoltaic systems that match with the load and the desired reliability level. In this paper, the authors use various load profiles of usage of mobile telephone for remote area and the reliability measures in term of loss of load probability (LOLP). The solar radiation uses as initial input to the systems. Then, they simulate the system behavior by hourly time step to estimate energy that can produce by systems. From the simulation result, it is shown that the desired high reliability level, which does not match with solar radiation, can result in system over size. The advantage of hourly time step calculation is able to estimate reliability supply in term of loss of load probability at any times