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基于双电源交叉供电动态电压恢复装置研究 被引量:3

Research on dynamic voltage recovery device based on double bus crossing power supply
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摘要 针对负载侧多敏感设备同时发生电压暂降或中断时,多补偿设备同时工作导致设备间相互影响,降低电压恢复能力的问题,提出一种在母线侧集中补偿的新型大功率动态电压恢复装置结构。该结构采用将动态电压恢复器(DVR)与不间断电源(UPS)相结合,并基于双电源(两条独立母线电源)交叉供电方式,通过控制补偿装置的孤岛与并网运行模式的切换,伴随补偿装置工作在孤岛运行模式、孤岛与并网相互切换方以及并网运行模式3种状态,实现两段母线的交叉供电,确保了电网中敏感负荷的供电可靠性。试验仿真表明,该结构能大大提高动态电压恢复装置的输出电压能力,实现了母线侧电压暂降与中断的长时间集中补偿,进一步提高了敏感负荷的供电可靠性。 Aiming at the problem that multi-compensation devices work at the same time when voltage sags or interruptions occur in load-side multi-sensitive devices,which results in the interaction between devices and reduces the voltage recovery ability,a new structure of high-power dynamic voltage recovery device with centralized compensation at bus-side is proposed in this paper. The structure combines dynamic voltage restorer( DVR) with uninterruptible power system( UPS),and based on double power supply mode,by controlling the switching of islanding and grid-connected operation modes of compensation devices,the micro-grid works in three states as follows: islanding operation mode,islanding and grid-connected mutual switching mode and grid-connected operation mode,the cross-supply of two-section buses is realized,and the reliability of sensitive loads in the micro-grid is ensured. The simulation results show that the structure can greatly improve the output voltage capacity of the dynamic voltage recovery device,realize the long-term centralized compensation of voltage sag and interruption at bus-side,and further improve the reliability of power supply for sensitive loads.
作者 孙海渤 周杰 汤茜 黄永红 Sun Haibo;Zhou Jie;Tang Qian;Huang Yonghong(Zhenjiang Power Supply Branch of State Grid Jiangsu Electric Power Company,Zhenjiang 212013,Jiangsu,China;School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China)
出处 《电测与仪表》 北大核心 2020年第10期127-133,共7页 Electrical Measurement & Instrumentation
基金 国网江苏省电力有限公司镇江供电分公司项目(J20180296)。
关键词 母线侧 交叉供电 动态电压恢复 并网 bus-side cross power supply dynamic voltage recovery grid connected
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