分数阶PID混合算法的水轮机调速系统优化控制与建模分析

为深入研究水轮机调速系统的非线性动态特征,分析水轮机在负荷波动时调速系统对水轮机转速、出力及输出电压电流波形的控制情况,提出一种采用混合算法(BP-FOA)的分数阶PID(FOPID)双目标函数控制系统;并利用Matlab平台建立了能够反映动态负荷变化及发电机情况的水轮机模型,使其更具实际适应性。仿真及实例分析表明,经混合算法优化后的水轮机调速器在调节性能与鲁棒性上均有一定的提升,同时亦为水轮机动态模型建模提供了借鉴。

Optimal Control and Modeling of Hydraulic Turbine Governing System Based on Fractional-order PID Hybrid Algorithms

In order to deeply study the non-linear dynamic characteristics of the hydraulic turbine governing system and analyze the control of rotational speed, output power, and output voltage and current waveform of the hydraulic turbine under the condition of load fluctuation, this paper proposes a bi-objective function control system of fractional order PID (FOPID) based hybrid algorithm (BP-FOA). The hydraulic turbine model that can reflect the dynamic load change and generator condition is established by using Matlab platform, which is more practical and adaptable. The results of simulation and case analysis show that the hybrid algorithm has improved the regulation performance and robustness of the turbine governor, and provides some references for the dynamic modeling of hydraulic turbine.