Solar photovoltaic (PV) system sizing: Considerations from name plate specifications

A simulation algorithm to estimate the total energy generated from a grid connected PV facility at any given location and for a given capacity is developed. The proposed simulation model combines the analytical methods with long term performance at hourly interval, and there by evaluating the optimum distribution units based on the cost function. The goodness of the simulation is validated using cumulative generation data from a 2 MW PV power plant. The novelty of the approach is established by sorting out the best commercial PV modules available in the market based on maximum electricity units generated per unit area, with reference to their name plate specifications. Further, the application of the simulation algorithm is demonstrated by evaluating the sizing requirement of a 1 MW scale grid connected PV power facility for Vellore district of Tamilnadu. The simulation algorithm also attempts to explore the effect of Nominal operating Cell Temperature (NOCT) on the plant capacity factor. Conclusions of this paper are good references for the sizing of grid connected roof top PV power plants, as well as to decisively choose the module specifications.