摘要
电力系统是一种典型的非线性系统,在周期扰动下可能发生混沌振荡,严重影响到电力系统的安全运行。以二阶互联电力系统为应用背景,当出现混沌振荡现象时,应用延时反馈控制(DFC)原理,针对传统延时反馈控制方法反馈控制增益K选择的困难,采用带积分的模糊控制器。在线调整量化因子Ke,Kec和比例因子Ku,积分器根据所设计的工况选择表来确定是否工作,从而达到对控制器的优化,此方法避免了对反馈控制增益K的求取。施加控制后,系统的混沌行为得到抑制,但仍存在周期振荡。对这种振荡,采用了一种滤波器,该滤波器根据系统中的周期扰动进行设计,形式简单,有效地将周期振荡控制到了平衡点。通过仿真实验验证了这种方法的有效性。
The power system is a typical non-linear system, the chaos oscillation may occur under certain con- ditions, which seriously affects the safe operation of power system. The second step power system is used as the background. When the chaos oscillation happens, using the theory of time-delayed feedback control, and against to the difficulty to choose the feedback gain K of the traditional time-delayed feedback control, using the fuzzy control- ler with integration instead. A on-line adjustment method is adopted to adjust the scaling factors Ko,Kocand Ku, the integration working status accords to the working select table, thus the controller is optimized, the method over- comes the shortcoming of the difficulty to choose feesback gain K. After being controlled, the chaos oscillation is re- strained, but the system still oscillates. Against to the oscillation, a filter is used, and it is designed by the periodic disturbance, the form is simple, at last, it controls the periodic motion to the equilibrium point effectivly. The sim- ulation proves that the method is effective.
出处
《科学技术与工程》
北大核心
2013年第13期3603-3608,共6页
Science Technology and Engineering
关键词
电力系统
混沌控制
自适应模糊
延时反馈
平衡点
power system controlling chaos adaptive fuzzy adjustment time-delated feedback control equi- librium point
