【摘要】 在变压器的二次侧加入无功补偿装置,是提高配电网功率因数的一种重要措施。以用于变压器二次侧的静止无功发生器(SVG)作为研究对象,在传统PI控制与模糊PI控制对比分析的基础上提出了基于变论域模糊控制的PI控制策略。同时,基于MATLAB平台完成了SVG装置的建模。仿真结果表明,所提出的基于变论域模糊控制的PI控制方法能够快速、无超调地跟踪电压设定值,有效地改善了系统的控制性能和瞬时响应性能,从而提高了SVG系统的补偿精度。更多还原

【Abstract】 Adding reactive power compensator to the secondary side of the transformer is an important measure to improve the power factor of the distribution network. The Static Var Generator(SVG)applied to the secondary side of the transformer is being studied as the object. On the basis of comparativeanalysis of traditional PI control and fuzzy PI control,a PI control strategy based on variable domain fuzzy control is presented. At the same time,the modeling of the SVG device is completed on the MATLAB platform. The simulation results show that the presented PI control method based on variable domain fuzzy control is able to track rapidly the setting voltage value without overshoot,and the control performance and transient response performance of the system can be improved effectively. Thus the compensation accuracy of the SVG system is improved.更多还原