基于超级电容储能的动态电压恢复器研究  

Research on Dynamic Voltage Restorer Based on Supercapacitor Energy Storage

作　　者：沙鸥[1] 孙玉坤[2] 张亮[2] 陈晖[1] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]南京工程学院电力工程学院,南京211167

出　　处：《电测与仪表》2014年第13期98-102,111,共6页Electrical Measurement & Instrumentation

基　　金：国家自然基金资助项目(61177020);南京工程学院引进人才科研启动基金资助项目(YKJ201215)

摘　　要：针对微电网电压闪变问题,研究了基于超级电容器储能的新型动态电压恢复器(DVR)系统。通过引入超级电容器储能,有效的利用了超级电容器极高的充放电能力和电荷储存能力,使动态电压恢复器在补偿电压时能快速提供稳定的电压。此外,通过研究基于超级电容的动态电压恢复器的控制策略,采用前馈加反馈的双闭环控制,引入了电容电流反馈,提高了系统的动态响应速度和控制精度。由于直流电源放电功率的提高,动态电压恢复器适用于频繁出现电压跌落的微电网线路,并且对阻性负载和阻感性负载有较好的适应性。仿真结果验证了理论分析的有效性和正确性。To deal with thevoltage sag problem inmicro - grid,the paper studiesthe new dynamic voltage restorer （DVR）system based on supercapacitor energy storage. By introducing the storage,the excellent charge / discharge and electric charge storage capability of the supercapacitor are effectively exploited,which enables the DVR to quickly provide a stable voltage for voltage compensation. In addition,the paper studied thecontrol strategy of supercapacitor based DVR. With feedforward / feedback double - loop control strategy and the introduction of capacitor current feed-back,dynamic response speed and control accuracy of the systemare improved. Due to the increased discharge power of DC power,the DVR can suit the micro - grid line with frequent voltage drops,and can well adapt toresistive load or inductive and resistive load. Simulation results verify the validity and correctness of the theoretical analysis.

关 键 词：微电网 电压跌落 动态电压恢复器 超级电容器 

分 类 号：TM761[电气工程—电力系统及自动化]