Study on the Impact of a Three-Phase Grid-Connected Photovoltaic at Low Voltage Network by using PSCAD Software

Nurul Nadia Aminuddin, Mohd Hendra Hairi, Muhammad Nizam Kamarudin, Mohd Khairi Mohd Zambri, Ahmad Sadhiqin Mohd Isira, Muhammad Herman Jamaluddin


Solar photovoltaic generation system is a type of distributed generation (DG) that can generate electricity to support load demand. Since the output of the PV generation needs to be connected with grid network, a few issues could occur. The issues that may occur are synchronization, overvoltage, undervoltage, and stability. The aim for this project is to analyse the impact of power generated by three-phase grid-connected photovoltaic system towards grid and load. Power System Computer Aided Design (PSCAD) software was used to model the three-phase grid-connected PV system. The performance of three-phase grid-connected photovoltaic system
was analysed based on several case studies which includes the import and export of active and reactive power at point of common coupling (PCC), impact of excessive power to support load demand without grid connection and effect of generated power from PV model toward voltage at distribution network including microgrid.

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