The With the rapid increase in distributed photovoltaic (PV) integration into distribution networks, voltage stability issues, particularly voltage limit violations, have become critical challenges. This paper investigates the impact of distributed PV integration on distribution network voltage stability under various control strategies and scenarios. Three control architectures-centralized, distributed, and local-are analyzed, with a focus on local control strategies, including constant reactive power control, constant power factor control, and voltage-based reactive and active power control. Using the IEEE33-node distribution network model, simulations in OpenDSS evaluate the voltage stability domain under different PV and wind power penetration ratios. Results indicate that the voltage-reactive power control strategy achieves the highest power penetration rate (up to 64.042%) in scenarios with high distributed generation (DG) integration, demonstrating superior voltage regulation and stability. This study provides insights into optimizing control strategies to enhance the stability of distribution networks with high DG penetration.