Voltage stability control in grid-tied photovoltaic systems considering loading effects

Abstract

This paper addresses the crucial challenge of voltage instability in grid-connected photovoltaic (PV) systems, especially under increased load consumption. The proposed control method introduces an innovative approach based on the Load Margin (LM) violation condition to optimize control strategies. The study evaluates the feasibility and effectiveness of this approach through simulations on the IEEE 9-bus system, utilizing Real-Time Digital Simulator (RTDS) technology. The research contributes valuable insights into mitigating voltage stability issues, offering a sophisticated control strategy tailored to the specific challenges posed by grid-connected PV systems. The findings have significant implications for advancing the integration of renewable sources of energy into traditional electrical grids while ensuring stable and sustainable power supply.