面向脉冲负载的基于超级电容储能UPQC设计及控制策略研究  

Research on Design and Control Strategy for UPQC Based on Supercapacitor Energy Storage for Pulse Load

作　　者：王萌 黄细霞 孙程 WANG Meng;HUANG Xixia;SUN Cheng(Institute of Logistics Science and Engineering,Shanghai Maritime University,Shanghai 201306,China)

机构地区：[1]上海海事大学物流科学与工程研究院,上海201306

出　　处：《电源学报》2024年第2期231-241,共11页Journal of Power Supply

基　　金：国家自然科学基金资助项目(52001197)。

摘　　要：针对带有脉冲负载电网的电压畸变和电流畸变问题,设计了带有超级电容储能的三电平统一电能质量调节器,提出了基于人工神经网络的方法对串联和并联补偿单元进行控制,基于双闭环PI控制的方法对超级电容储能单元进行控制。其中,串联补偿单元进行电压补偿,以维持负载电压的稳定,保证负载的用电需求;并联补偿单元进行电流补偿,以维持电源电流的稳定,避免电网受到持续大幅冲击;超级电容储能单元对直流侧进行充放电,以维持直流侧电压的恒定,保证串、并联侧的正常工作。所提方法省去了繁琐的坐标变换过程,避免了多个滤波器造成相位滞后的问题。仿真实验结果表明,所提拓扑和控制策略有助于改善带有脉冲负载电网的电能质量。Aimed at the voltage distortion and current distortion of power grid with pulse load,a three-level unified power quality conditioner(UPQC)with supercapacitor energy storage is designed.A method based on artificial neural network is proposed to control the series and shunt compensation units,and a method based on double closed-loop PI control is used to control the supercapacitor energy storage unit.The series compensation unit compensates voltage to maintain the stability of load voltage and ensure the power demand of load,while the shunt compensation unit compensates current to maintain the stability of supply current and avoid the continuous and large impact on power grid.The supercapacitor energy storage unit charges and discharges on the DC side to maintain a constant voltage on the DC side and ensure the normal operation on the series and shunt sides.The proposed method eliminates the complicated coordinate transformation process and avoids the phase lag caused by multiple filters.Simulation experiment results show that the proposed topology and control strategy are helpful for improving the power quality of power grid with pulse load.

关 键 词：脉冲负载 统一电能质量调节器 超级电容储能 人工神经网络 

分 类 号：TM711[电气工程—电力系统及自动化]