光伏直流微网母线电压稳定控制  

Bus Voltage Stable Sontrol in the Photovoltaic DC Micro-grid

作　　者：李圣清[1] 徐天俊 张彬[1] 杨峻[1] 

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412008

出　　处：《电气传动》2015年第3期48-52,共5页Electric Drive

基　　金：国家自然科学基金项目(51077046);湖南省自然科学基金项目(2015JJ5009);湖南省重点建设学科项目(201176)

摘　　要：为了实现光伏直流微网母线电压的稳定控制,提出了一种分层协调控制方法,该方法通过设定合理的电压阈值,对直流母线电压变化量的控制来协调蓄电池储能接口、网侧接口及光伏接口的工作方式,确保在不同工况下都能保持微网内的有功功率平衡。通过在并网过程中采用预同步控制和脱网过程中的电压电流双环控制以减小暂态电流冲击。利用Matlab/Simulink进行了仿真和实验验证,结果证明了该方法的有效性和可行性。In order to realize bus voltage stable control in the photovoltaic DC micro-grid,proposed a layeredcoordination control method of DC bus voltage. The method was based on the control of DC bus voltage variation tocoordinate photovoltaic battery energy storage interface,netside interface and the interface work by setting resonablethreshold voltage,ensured that under different conditions can keep the network in active power balance. During the on-grid and off-grid process,switching between layers for a smooth design to reduce the transient current impaction. UsedMatlab/Simulink simulation and experimental verification,the results verify the effectiveness and feasibility of themethod.

关 键 词：直流微网 光伏发电 分层协调控制 母线电压 切换控制策略 

分 类 号：TM351[电气工程—电机]