Comprehensive Power Quality Management for Low-Voltage Distributed Photovoltaic System Design

This paper investigates the power quality issues arising from the grid integration of low-voltage distributed photovoltaic (PV) systems, such as reverse heavy overload and voltage over-limit conditions. It evaluates the limitations of current mitigation strategies and proposes a design for a power quality comprehensive treatment device. This device is capable of real-time power quality monitoring and can interact with intelligent substations via remote communication. It achieves functions including active power regulation, reactive power compensation, and harmonic control, thereby effectively addressing voltage over-limit problems and enhancing the safe operational performance of the power grid.