电网电压不对称工况下微网的低电压穿越控制策略  

Control Strategy of Low-voltage Ride-through for Micro-grid under Asymmetric Grid Voltage

作　　者：徐良[1] 韩民晓[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京102206

出　　处：《大功率变流技术》2016年第3期36-39,共4页HIGH POWER CONVERTER TECHNOLOGY

基　　金：国家高技术研究发展计划(863计划)(2015AA050102)

摘　　要：对微电网在主网电压不对称工况下的低电压穿越控制策略进行了研究,建立了微网稳定控制器(储能逆变器)在不对称电网电压下的数学模型,提出了一种基于改进PR(比例谐振)控制的低电压穿越控制策略。仿真结果显示,所提出的控制策略可以有效限制并网点故障电流。It researched the control strategy of micro-grid low voltage ride-through under asymmetric grid voltage, established a mathematical model of micro-grid stability controller under asymmetric grid voltage for low voltage ride-through of micro-grid under asymmetric voltage sag, proposed a control strategy based on improved PR control for micro-grid low voltage ride-through. Simulation results show that the fault current of PCC can be reduced effectively by the issued control strategy.

关 键 词：微电网 PR控制 低电压穿越 稳定控制器 

分 类 号：TM61[电气工程—电力系统及自动化]