Impact of Grid-Connected Photovoltaic System in the Power Quality of a Transmission Network

This article presents the results of the impact study on the high-voltage (HV) transmission network of a 40 MW PV plant connected to the high impedance Moroccan HV network. The analysis of the power plant’s behavior at the connection point includes the calculation of the active and reactive power flux and the harmonics. The simulation results from the Electrical Transient Analyzer Program (ETAP) software showed the influence of the short-circuit power of the network and the type of inverter on the harmonic ratio at the connection point of the photovoltaic (PV) plant with the HV network. The study recommends installing a low-pass filter to reduce harmonic distortion at the short-circuit power (PCC) connection point.