基于多模型PI的STATCOM直接电压控制方法

摘要

A multi-model PI controller is proposed for the voltage control of STATCOM,which applies multiple models to PI controller. The PI controller has simple structure,short computing time and easy realization,while the multi-model strategy is applied to ensure the accuracy and speed of voltage control at connecting point for different impactive loads. Simulative results show that,compared to traditional PI controller,the multi-model PI controller has better adaptability to the voltage variation at connecting point and higher compensation precision.%针对静止同步补偿器(STATCOM)电压控制问题,提出了一种基于多模型PI的STATCOM控制方法.该方法将多模型方法和PI控制方法相结合,控制器采用PI控制器结构,具有结构简单、计算时间短、易于实现等优点.同时利用多模型的方法,来适应不同冲击性负载下接入点电压幅值降低的不同给PI控制器造成的影响,从而满足接入点电压控制的精度与速度.仿真研究表明,多模型PI控制器相比一般PI控制器,具有更强的对于接入点电压变化的适应能力和更高的补偿精度,证明了所提方法的有效性.