摘要
分析了常规PID控制应用于可控串补(TCSC)的阻抗控制时在TCSC的命令阻抗从不同阻抗阶跃到同一阻抗的情况下其鲁棒性差的原因,借鉴生物免疫系统的免疫响应调节机理,提出了一种用于TCSC阻抗控制的免疫反馈PID控制方法,该方法不改变传统PID控制器的结构,其中的免疫反馈响应速度可通过调整控制系统自身的参数进行调节,因而具有较强的实用性。免疫反馈PID控制与常规PID控制的仿真比较结果证明,文中提出的控制方法在响应各种阻抗阶跃命令时具有较小的超调量和较快的响应速度,并能快速消除偏差,具有良好的动态和静态性能,能满足实际工程的要求。
When conventional PID control is applied to impedance control of thyristor controlled series compensation （TCSC）, the robustness of the PID control is weak while the ordering impedance of TCSC steps from different values to the same value. Here, the reason of this phenomenon is analyzed. Drawing on the experience of adjusting mechanism of immune response in biotic immune system, an impedance control method combining the conventional PID control with immune feedback law is proposed, in which the structure of traditional PID controller is not changed and the response speed of immune feedback can be adjusted by adjusting the parameters of the control system, so the proposed control method is practicable. Comparing the simulation results of immune feedback PID control and conventional PID control, it is proved that the TCSC adopting the proposed control method can respond to various impedance step orders with less overshoot and faster response speed, meanwhile the deviation can be rapidly eliminated, so the proposed control method possesses better dynamic and static performances and can satisfy the requirements of actual engineering tasks.
出处
《电网技术》
EI
CSCD
北大核心
2005年第17期49-52,67,共5页
Power System Technology
关键词
电力系统:可控串补(TCSC)
阻抗控制
命令阻抗
免疫反馈
PID控制
Power system
Thyristor controlled series compensation （ TCSC ）
Impedance control
Ordering impedance
Immune feedback
PID control
