摘要
针对电压暂降伴随着相位跳变且容易导致过载跳闸的问题,借助动态电压恢复器(DVR)缓解电压暂降,在简述具有相位跳变的电压暂降的基础上,重点分析了电压暂降的相位跳变补偿模式,提出了基于同相补偿和预暂降补偿的动态电压恢复器的控制策略。最终在10 kVA的动态电压恢复器额定电压条件下,运用Saber对两种控制策略的性能进行比较,结果表明:两种控制策略都可以用来减少电压暂降引起的负载电压干扰,预暂降补偿策略可以完全补偿相位跳变,而同相补偿策略只能部分补偿相位跳变。
The problem of voltage sag is accompanied by phase jump and easy to cause overload trip.With the help of dynamic voltage restorer(DVR)to alleviate the voltage sag,based on the brief description of the voltage sag with phase jump,the phase jump compensation mode of voltage sag is analyzed,and the in-phase compensation and pre-sag are proposed.The control strategy of the compensated dynamic voltage restorer was compared and compared.Finally,under the condition of 10 kVA dynamic voltage restorer rated voltage,Saber compares the performance of the two controls.The results show that both control strategies can be used to reduce the load voltage interference caused by voltage sag.The pre-sag compensation strategy can be the phase jump is fully compensated,while the in-phase compensation strategy can only partially compensate for phase jumps.
作者
张军
陈兵
王晖
浦天宇
史明明
ZHANG Jun;CHEN Bing;WANG Hui;PU Tianyu;SHI Mingming(State Grid Jiangsu Electric PowerCo.,Ltd.;State Grid Jiangsu Electric Power Co.,Ltd.Research Inistitute;Golden Cooperate DC Power Distribution Technology Co.,Ltd.;School of Energy and Power,Nanjing University of Aeronautics and Astronautics,Nanjing 210000,China)
出处
《工业仪表与自动化装置》
2019年第2期8-12,共5页
Industrial Instrumentation & Automation
关键词
动态电压恢复器
相位跳变
同相补偿
预暂降补偿
dynamic voltage restorer
phase jump
in-phase compensation
pre-sag compensation