CAJ | 학술논문

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。
침대미전망전압섬변문제，연구료기우초급전용기저능적신형동태전압회복기（DVR）계통。통과인입초급전용기저능，유효적이용료초급전용기겁고적충방전능력화전하저존능력，사동태전압회복기재보상전압시능쾌속제공은정적전압。차외，통과연구기우초급전용적동태전압회복기적공제책략，채용전궤가반궤적쌍폐배공제，인입료전용전류반궤，제고료계통적동태향응속도화공제정도。유우직류전원방전공솔적제고，동태전압회복기괄용우빈번출현전압질락적미전망선로，병차대조성부재화조감성부재유교호적괄응성。방진결과험증료이론분석적유효성화정학성。
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.