基于超级电容器储能的直流DVR装置的研发

Development of DC DVR Device Based on Super Capacitor Energy Storage

电压暂降是电力系统中危害最大的电能质量问题之一。针对电压暂降问题,文章提出了基于超级电容的直流动态电压恢复器(Dynamic Voltage Restorer,DVR)装置,完成了该装置的主电路以及超级电容充放电的控制方法,并对该装置进行了仿真和试验。试验证明,该装置在电网发生电压暂降的时候,可以有效地支撑敏感负荷的直流电压,降低电压暂降对敏感负荷的影响。

Voltage sag is one of the most hazardous power quality problems in power system.This paper proposes a novel DC DVR device based on super-capacitor,presents the main circuit and the control method of super capacitor charging and discharging.Simulated and experimental results show that the device can effectively support the sensitive load by keeping the DC voltage stable in the event of voltage sag,which will reduces the sag's impact on sensitive loads.