摘要
针对静止同步补偿器(STATCOM)存在高次谐波分量问题,提出在主电路上采用一种单元级联型曲折变压器的输出结构.以该主电路物理模型为基础,设计模糊PI控制器,并用Matlab仿真软件进行了详细的仿真分析.仿真结果表明,STATCOM输出电压总谐波失真小,具有良好的电压品质,在模糊PI控制器的作用下,STATCOM对系统电压表现出较强的控制能力,增强了对电力系统稳定性的控制,具有满意的控制精度,比传统的PI控制具有更好的控制效果.
For the higher order harmonic problem in static synchronous compensator （STATCOM）, a cascaded unit and zigzag output structure of transformer was adopted in main circuit. The fuzzy PI controller was designed and the simulation analysis was carried out by MATLAB based on the physical model of the main circuit. The simulation results show that the total harmonic distortion of output voltage for the STATCOM is small. The STATCOM represents good voltage capability, and gives satisfactory control precision for system voltage under fuzzy PI controller, which enhances the control capacity for the stability of power system. The present control strategy has better control effect than the traditional PI control method.
出处
《沈阳工业大学学报》
EI
CAS
2009年第2期144-148,共5页
Journal of Shenyang University of Technology
关键词
静止同步补偿器
曲折变压器
模糊PI控制
电力系统稳定性
仿真
static synchronous compensator
zigzag transformer
fuzzy PI control
stability of power system
simulation
