为提升火电机组-飞轮储能联合区域调频系统的稳频性能，以联合飞轮储能的某300 MW机组调频系统为研究对象，提出了计及稳频性能的火电-飞轮储能互联电网AGC控制策略。首先，建立了飞轮储能-火电机组联合参与调频的区域电网模型。进一步，以模糊自整定PID控制器作为下垂控制外环控制器，粒子群算法（PSO）整定的带滤波系数的PD控制器作为内环控制器，设计了改进的串级控制回路。最后为验证所提方法的优越性，分别以阶跃系统扰动和连续随机扰动进行实验。结果表明，所提控制方法显著提升了区域系统的稳频性能，阶跃扰动测试下的频率偏差积分指标提升平均达72%以上；连续随机扰动测试下，频率偏差积分指标提升平均达75%以上。

In order to improve the frequency stability performance of the combined regional frequency regulation system of thermal power units and flywheel energy storage, a frequency regulation system of a 300 MW unit with combined flywheel energy storage was studied, and an AGC control strategy for the thermal power flywheel energy storage interconnected power grid considering frequency stability performance was proposed. Firstly, a regional power grid model was established for the joint participation of flywheel energy storage and thermal power units in frequency regulation. Furthermore, a fuzzy self-tuning PID controller was used as the droop control outer loop controller, and a PD controller with filtering coefficients tuned by particle swarm optimization (PSO) algorithm was used as the inner loop controller to design an improved cascade control loop. Finally, to verify the superiority of the proposed method, experiments were conducted using both step system perturbations and continuous random perturbations. The results show that the proposed control method significantly improves the frequency stability performance of the regional system, with an average improvement of over 72% in the frequency deviation integral index under step disturbance testing; Under continuous random disturbance testing, the frequency deviation integral index has improved by an average of over 75%.