摘要
随着新能源中风力发电容量占电网比重的不断增加,新的电网运行准则要求风电机组具有一定的低电压穿越运行能力,电压跌落发生器是测试风电机组低压穿越性能的重要装置。这里在分析真实电网电压跌落类型的基础上,提出一种基于比例积分谐振控制器的电压跌落发生器控制策略,以实现故障电压正负序分量的精确控制。实验结果表明,基于该方法的电压跌落发生器能准确产生真实电网的跌落电压信号,满足风电机组测试运行的需要。
As the installed wind power capacity increased,the grid code have required the wind turbines must have low voltage ride-through（LVRT） capability,a voltage sag generator（VSG） is the important equipment for wind tu-bines to evaluate the operation capacity of LVRT.Based on the analysis of the types of voltage sags that maybe occur at the wind turbines terminal,a novel control strategy adopted proportional integral resonant（PIR） for VSG is pro-posed to control the positive and negative sequence component of the dipped voltage.The experimental results show that the proposed VSG can generate all types of voltage sags accurately to meet the requirement of wind turbines.
出处
《电力电子技术》
CSCD
北大核心
2011年第1期27-29,共3页
Power Electronics
关键词
电压跌落发生器
低电压穿越
比例积分控制器
voltage sage generator
low voltage ride-through
proportional integral controller
