Optimal Sizing, Placement and Shading Analysis of a 19.2kW Grid-Tied Residential Roof-Top PV System

Abstract

This paper proposes a grid-tied PV system for a residential home located at the green city Bhubaneswar, India. The investigation involves the PV system sizing, designing, geographical location, components selection, orientation, placement, shading evaluation and performance analysis. At first, the 19.2kW on-grid PV system is designed in the PVsyst software considering meteorological data of the site, available components and various loss parameters. Later on, the 3D modelling of the roof is done in Sketchup Skelion environment for optimal placements of the modules to avoid unexpected shadow formation during the operational hours. Also, the shading losses, area required and approximate system size are calculated. The model is exported to PVsyst for performance analysis of the PV system that includes power generation, loss calculations, PV array and inverter performance and annual energy yield. It has been found that the approximate system size proposed by both the software matches greatly and the maximum production of the proposed system is calculated as 25MWh/year with maximum array and system losses as 0.93 and 0.44kWh/kWp/day.