Power Quality Analysis of an Eco-House ۲۴kW Grid-Connected Solar System in Nizwa University in Oman

This study examines the performance of a ۲۴-kW grid-connected photovoltaic (PV) system installed in an eco-house in Oman. The performance analysis of the system included site assessment, incorporating local weather conditions and load characteristics. The power flow analysis is conducted utilizing actual gathered data. The power flow analysis implies that a substantial amount of energy is exported from the PV system to the grid annually under different weather conditions, which may lead to major power-quality disturbances in the local network. A MATLAB/Simulink model of the studied system is developed to analyze its overall performance and to perform the power-quality analysis. The model is employed to evaluate the operation of the DC/DC converter and the maximum power point tracking algorithm, where the simulation results confirm effective power tracking and efficient DC/DC converter performance. Furthermore, the model is utilized to conduct a comprehensive power-quality assessment to examine the influence of the ۲۴-kW grid-connected PV system on Oman's local distribution network. This includes total harmonic distortion, voltage balance, system stability, and voltage disturbances such as sag and swell. The power-quality examination is performed under various operating conditions, including fault events, voltage sag and swell, and harmonic distortion. The simulation outcomes demonstrate that the grid-connected PV inverter provides satisfactory power-quality performance and that the system complies with the applicable Oman Grid Code power-quality requirements.

کلیدواژه ها:

grid-connected photovoltaic system ، Power quality ، Total harmonic distortion ، MPPT ، MATLAB/Simulink