基于混合储能的微电网动态电压恢复器研究 *

doi:10.11985/2020.04.012

摘要/Abstract

摘要：

针对微电网电压暂降问题,设计了一种基于蓄电池-超级电容器混合储能的动态电压恢复器(Dynamic voltage restorer, DVR)系统。构造了一种大容量长寿命的混合储能DVR拓扑;在电网电压正常及发生电压暂降时,提出对DVR分别采用微电源下垂控制策略和复合控制补偿策略,改善电压质量并提高设备利用率,同时在电网电压中断情况下,DVR还可发挥不间断电源(Uninterruptible power system,UPS)功能为负荷供电。利用Matlab/Simulink搭建了系统仿真模型,仿真结果验证了所提DVR系统的有效性和正确性。

关键词: 动态电压恢复器, 微电网, 电压暂降, 超级电容器, 蓄电池, 混合储能

Abstract:

To solve the voltage sag problem of microgrid, a dynamic voltage restorer (DVR) system based on hybrid storage of battery and super capacitor is studied. A hybrid energy storage DVR topology is designed to increase energy storage capacity and extend battery life, and the operation mode which can improve the utilization of DVR equipment is proposed. Different operation control strategies are adopted for the DVR when the grid voltage sag occurs and the grid voltage is normal. When the grid voltage is interrupted, the DVR can also operate the uninterruptible power supply (UPS) function to power the load. Finally, the effectiveness of the DVR system is verified by simulation using the Matlab/Simulink.

Key words: Dynamic voltage restorer(DVR), microgrid, voltage sag, super capacitor, battery, hybrid energy storage

中图分类号:

TM743

胡博, 赵兴勇. 基于混合储能的微电网动态电压恢复器研究 ^*[J]. 电气工程学报, 2020, 15(4): 99-105.

HU Bo, ZHAO Xingyong. Research on Dynamic Voltage Restorer of Microgrid Based on Hybrid Energy Storage[J]. Journal of Electrical Engineering, 2020, 15(4): 99-105.

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