微电网逆变器并联系统的稳定性研究  

Research on Stability of Parallel System of Microgrid Inverter

作　　者：李浩琛 郭志坚 Li Haochen

机构地区：[1]山西工程技术学院电气工程与自动化系,山西阳泉045000

出　　处：《工业控制计算机》2022年第12期163-166,共4页Industrial Control Computer

基　　金：山西省立校资助项目(2020L0725)。

摘　　要：传统下垂控制在微电网逆变器并联运行中呈现出无功功率无法均分以及电能质量下降的问题。针对这一问题,采用了一种基于信号补偿的下垂控制。该控制方式是在传统下垂控制中分别添加无功均分信号和补偿信号,来实现无功功率的均分和相位同步;并通过线性化处理对该控制方式进行小信号建模,分析了系统的动态性能,确立了相应参数的最优取值。最后微电网对逆变器并联模型进行仿真验证,仿真验证了该控制方式的有效性和可行性。In the parallel operation of microgrid inverters,traditional droop control presents the problems of reactive power can not be shared and power quality become deteriorated.In terms of the issue,a droop control with signals compensation is adopted in this paper.In order to achieve reactive power sharing and phase synchronization,the reactive power sharing difference signals and compensation signals are added to traditional droop control respectively.For the aim of analyse dynamic performance and determine optimal parameter,the small signal model is modeled by linearization.Finally,the parallel model of inverters is simulated and verified.

关 键 词：微电网逆变器 信号补偿 小信号模型 动态性能 

分 类 号：TM464[电气工程—电器] TM712