Abstract: With the acceleration of the global energy transition, the large-scale integration of distributed photovoltaic power generation projects into distribution networks has become the norm. However, it simultaneously brings challenges such as excessive voltage, reverse power flow, and system instability. To cope with these challenges, an innovative two-layer control strategy has been proposed. By rationally controlling the active and reactive power output of photovoltaics, the stability of the power system is maintained. In this paper, a clustering algorithm is first employed to analyze each node in the distribution network and establish cluster performance indicators. Secondly, an integrated intelligent greedy algorithm is adopted for the division of cluster areas, enabling rapid autonomous voltage regulation of clusters in a short-time scale. Finally, in the long-time scale inter-cluster mutual governance stage, the alternating direction method of multipliers is utilized to coordinate the voltage control strategies among different clusters. The combination of cluster autonomy and inter-cluster mutual governance constitutes the two-layer voltage control strategy. Verified through MATLAB simulations, this strategy not only demonstrates innovation in theory but also exhibits remarkable practicability and efficiency in practical applications.