直流微电网母线电压波动分类及抑制方法综述
发布时间：2019-08-09 20:14
【摘要】：维持直流母线电压稳定是保证直流微电网稳定运行的核心,亟待展开深入研究。该文首先将直流微电网内母线电压波动(DC bus voltage fluctuations,DC BVF)按时间尺度、频率特性和产生机理分为扰动型波动和振荡型波动两种;然后,对扰动型DC BVF和振荡型DC BVF现有的抑制方法以及基于分层控制体系的能量管理系统进行了综述研究,重点就双向AC/DC变换器负载电流和功率前馈控制方法的DC BVF抑制方法、电网不平衡及谐波情况下的AC/DC变换器直流侧功率谐波抑制方法、基于母线电压调节器(voltage bus conditioner,VBC)的DC BVF抑制方法以及直流微电网多源协调和能量管理控制方法及其存在的问题进行了评述;最后,结合文中的DC BVF分类方法,分别对扰动型波动和振荡型波动抑制方法的前景进行了展望。
[Abstract]:Maintaining the voltage stability of DC bus is the core to ensure the stable operation of DC microgrid, and it is urgent to carry out further research. In this paper, the bus voltage fluctuation (DC bus voltage fluctuations,DC BVF in DC microgrid is divided into disturbance fluctuation and oscillatory fluctuation according to time scale, frequency characteristics and generation mechanism. Then, the existing suppression methods of disturbance DC BVF and oscillatory DC BVF and the energy management system based on hierarchical control system are reviewed and studied, with emphasis on the DC BVF suppression method of load current and power feedforward control method of bidirectional AC/DC converter, the DC side power harmonic suppression method of AC/DC converter under the condition of power grid imbalance and harmonics, and the (voltage bus conditioner, based bus voltage regulator. The DC BVF suppression method of VBC), the multi-source coordination and energy management control methods of DC microgrid and their existing problems are reviewed. Finally, combined with the DC BVF classification method in this paper, the prospect of disturbance wave and oscillatory wave suppression methods is prospected respectively.
【作者单位】： 天津大学智能电网教育部重点实验室;
【分类号】：TM71
[Abstract]:Maintaining the voltage stability of DC bus is the core to ensure the stable operation of DC microgrid, and it is urgent to carry out further research. In this paper, the bus voltage fluctuation (DC bus voltage fluctuations,DC BVF in DC microgrid is divided into disturbance fluctuation and oscillatory fluctuation according to time scale, frequency characteristics and generation mechanism. Then, the existing suppression methods of disturbance DC BVF and oscillatory DC BVF and the energy management system based on hierarchical control system are reviewed and studied, with emphasis on the DC BVF suppression method of load current and power feedforward control method of bidirectional AC/DC converter, the DC side power harmonic suppression method of AC/DC converter under the condition of power grid imbalance and harmonics, and the (voltage bus conditioner, based bus voltage regulator. The DC BVF suppression method of VBC), the multi-source coordination and energy management control methods of DC microgrid and their existing problems are reviewed. Finally, combined with the DC BVF classification method in this paper, the prospect of disturbance wave and oscillatory wave suppression methods is prospected respectively.
【作者单位】： 天津大学智能电网教育部重点实验室;
【分类号】：TM71
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