Modeling of a Grid-Connected Solar Photovoltaic Power Generation System for Thailand

Abstract

The creation of a 3D Solar System Simulation Model for the buildings and surrounding areas of Mission Hospital Phuket was conducted using PVsyst Photovoltaic Software Version 7.3.1 to design and simulate the performance and energy losses of the solar photovoltaic system. The research methodology involved data collection and analysis to simulate system performance through four main steps: (1) collection of meteorological and site-specific data; (2) configuration of system parameters; (3) simulation and energy production analysis under the Grid-Connected System mode; and (4) technical evaluation aimed at maximizing installation and operational efficiency. The study reveals that the annual electricity production simulation results are as follows: (1) Produced Energy: 329,664 kWh/year (kilowatt-hours per year) (2) Specific Production: 1,475 kWh/kWp/year (annual energy yield per kilowatt-peak of installed capacity) (3) Performance Ratio (PR): 78.56% (4)PV Field Orientation: Fixed planes configured across 4 distinct directions (5) Horizon: Free Horizon, indicating no landscape obstacles to obstruct horizontal sunlight (6) Sheds Configuration: Comprises 352 rows of identical solar PV modules with identical electrical specifications (7) Models Used: Transposition (Radiation Calculation): Perez Model; Diffuse Sky Radiation: Perez, Meteonorm separate model; Circumsolar Radiation: Meteonorm separate model (8) Near Shadings: Evaluated using the Linear Shadings calculation method (9) User's Needs: Configured as an "Unlimited load (grid)," denoting a grid-connected system with continuous grid backup. Ultimately, the findings of this research serve as a practical guideline for assessing the actual feasibility of solar power system installations within the Thai context.