随着新型电力系统的加速建设，电力系统正逐步从“源随荷动”向“源荷互动”的模式转变。电解铝工业负荷作为负荷侧优质的调节资源，具备巨大的调节潜力，文中提出一种考虑AGC信号动态分配的电解铝负荷参与电力系统二次调频控制策略。首先，构建电解铝负荷的调节特性模型，建立包含电解铝负荷的两区域电力系统调频响应模型；然后，综合考虑调频容量和调节速率特性，提出一种二次调频功率动态分配策略，根据AGC信号的变化实现二次调频功率在火电机组和电解铝负荷之间的实时动态分配；接着，考虑AGC控制效果和调频经济性等因素，提出一种基于NSGA-Ⅱ算法的二次调频控制参数多目标优化方法，进一步提升调频性能；最后，通过Matlab/Simulink仿真对本文所提控制策略进行验证。结果表明，本文所提二次调频控制策略一定程度上发挥了不同调节资源的调节特性，对改善二次调频效果起到积极作用，系统的频率特性得到一定程度的改善。

With the accelerated development of new power systems, the power system is gradually transitioning from a load-following model to an interactive load-generation model. As a high-quality load-side regulation resource, the load from the aluminium smelting industry possesses significant regulation potential. This paper proposes a strategy for aluminium smelting load participation in secondary frequency regulation control of the power system, considering the dynamic allocation of AGC signals. First, a regulation characteristic model for electrolytic aluminium load is established, and a two-region power system frequency regulation response model incorporating electrolytic aluminium load is developed. Then, considering both frequency regulation capacity and regulation rate characteristics, a dynamic power allocation strategy for secondary frequency regulation is proposed, enabling real-time dynamic allocation of secondary frequency regulation power between thermal power units and electrolytic aluminium load based on changes in AGC signals. Next, considering factors such as AGC control effectiveness and costs, a multi-objective optimisation method for secondary frequency regulation control parameters based on the NSGA-II algorithm is proposed to further enhance frequency regulation performance; finally, the proposed control strategy is validated through Matlab/Simulink simulation. The results indicate that the proposed secondary frequency regulation control strategy fully utilises the regulation characteristics of different regulation resources, playing a positive role in improving secondary frequency regulation effectiveness, and the system's frequency characteristics are improved to a certain extent.