摘要
针对微电网中存在的电压质量问题,提出一种基于光蓄发电单元的动态电压恢复器(DVR)。该DVR储能装置为光蓄发电单元,并采用整流器与配电网相连,可将能量从电网或光伏发电提供给负荷,通过对其中的开关信号进行合理控制,从而实现DVR及UPS运行模式的有效切换,提高设备利用率,提高供电质量和可靠性。仿真结果表明,该DVR可有效改善微电网电压质量。
A topology of dynamic voltage restorer is proposed to improve voltage quality in a microgrid.The restorer is based on a photovaltaic/battery hybrid system,and is connected with the grid by a rectifier.Using back-to-back mode,the proposed apparatus can realize the function of dynamic voltage restoration and uninterrupted power supply,which can improve the utilization of the device.The simulation and experimentation show that the proposed DVR can constrain many kinds of voltage issue of power system,confirm the voltage quality of the sensitive load,which can be suitable for the voltage quality improvement of the microgrid.
出处
《电力学报》
2013年第2期91-95,共5页
Journal of Electric Power
基金
国家国际科技交流合作专项(项目编号:2010DFB63200)
山西省国际科技合作计划(项目编号:2011081054)
山西省电力公司科技项目~~
