基于动态电压恢复器的控制策略与仿真研究

Control strategy and simulation research based on dynamic voltage restorer

针对用户侧因电压暂降引起的电能质量问题,采用动态电压恢复器(Dynamic Voltage Restorer,DVR)进行电压恢复,为提高补偿效果,提出了基于动态电压恢复器的瞬时无功功率dq变换检测算法的PID控制策略,并在matlab上进行仿真验证。结果表明:该控制策略原理清晰,计算量小,提高了DVR动态特性,对电压暂降能有效补偿。

Aiming at the power energy quality problem of customer side due to voltage sag,adoptsdynamic voltage restorer（DVR）to restore the voltage. In order to improve the compensation effect,puts forward the PID control strategy based on DVR instantaneous reactive power dq transformdetection algorithm,and makes simulation in Matlab. The result shows that this control strategy hasclear principle,small calculation,improves the dynamic characteristic of DVR,can effectivelycompensating voltage sag.