Hydropower is currently one of the most widely used renewable clean energy sources in power systems. When scheduling and optimizing hydropower plants, operators need to pay attention to metrics such as power generation and minimum output. Constantly monitoring power generation enables the scientific and rational utilization of water resources, allowing enterprises to achieve optimal benefits. The maximum model for minimum output can improve the performance of hydropower systems, enhancing the minimum output, making it easier for cascade small hydropower stations to effectively adjust during wet and dry periods, and achieving the goal of compensation and regulation. The hydropower industry is an essential sector for driving social and economic development, and cascade small hydropower stations are a crucial part of this industry. These stations, located within the same river basin, need to not only operate normally but also coordinate the dual functions of power generation and water usage to improve overall efficiency.