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Auto Disturbance Rejection Control for Excitation System of Hydro-generator Units
Author(s): 
Pages: 10-13
Year: Issue:  4
Journal: HYDROPOWER AUTOMATION AND DAM MONITORING

Keyword:  水轮发电机组励磁系统自抗扰控制鲁棒性SIMULINK;
Abstract: 为了进一步提高电力系统的稳定性,应用自抗扰控制(ADRC)理论对水轮发电机组励磁系统进行设计,将模型的外部扰动和不确定参数的变化作为系统的扩张状态进行实时观测并加以补偿,将输出量与给定信号的误差进行非线性组合,形成外环控制率.通过对三相短路故障状态的动态仿真,并与传统PID控制效果进行对比,结果表明ADRC系统响应快、超调小,对模型的不确定性及外部扰动具有更强的适应性和鲁棒性,进一步提高了系统的阻尼.
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