摘要
提出了延迟反馈控制法对中性点直接接地系统所发生的铁磁谐振混沌状态进行抑制。以110kV变电站的典型接线为例,运用非线性动力学中的相平面、庞加莱截面、Lyapunov指数、分数维等方法分析其铁磁谐振时所表现的混沌特性。该方法是将系统的某个输出引出,经过一个延时时间后再反馈回原系统作为控制信号,利用系统自身的非线性特征使铁磁谐振系统的混沌状态转移到期望的周期轨道,从而实现混沌抑制。理论分析及数值仿真验证了该方法的有效性。
This paper proposes a delayed feedback control method to control the chaos of ferroresonance in neutral gr-ounded system.Taking a typical 110-kV substation wiring for example,the elementary concepts of nonlinear dynamics such as the phase plane,the poincare section,the Lyapunov index,the fractral dimension are introduced and applied to analyze the aotic characteristics represented during the ferroresonance process.The proposed method can effectively control the ferrore-sonance overvoltage from the chaos to period orbit by using one output signal after a delayed time as the feedback signal.
出处
《工业控制计算机》
2012年第8期65-67,共3页
Industrial Control Computer
关键词
铁磁谐振
非线性动力学
混沌控制
延迟反馈控制
ferroresonance
nonlinear dynamics
chaos control
delayed feedback control
