Single-Phase Photovoltaic Grid-Connected Generation System with Voltage Feedforward Control and Active Frequency Drift Islanding Detection
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Resource Overview
Simulink simulation model for a single-phase PV grid-connected system featuring voltage feedforward control and Active Frequency Drift (AFD) islanding detection method, achieving preliminary synchronization of grid current with grid voltage frequency and phase. The AFD detection algorithm is implemented using S-functions, with fundamental islanding detection functionality successfully demonstrated.
Detailed Documentation
This document discusses the Simulink simulation model for a single-phase photovoltaic grid-connected generation system implementing voltage feedforward control and Active Frequency Drift (AFD) islanding detection method. The model achieves preliminary synchronization between grid current and grid voltage in both frequency and phase. The AFD islanding detection functionality is implemented through S-functions, which allow custom algorithm development for perturbing the system frequency when islanding conditions occur. Through these enhancements, the model demonstrates improved detection capabilities with the voltage feedforward control ensuring stable grid connection and the AFD method providing reliable anti-islanding protection by introducing controlled frequency deviations when grid disconnect is detected.
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