基于相位补偿的并网逆变器改进下垂控制策略研究  

Research on Improved Drooping Control Strategy of Grid-Connected Inverters Based on Phase Compensation

作　　者：程琳 都小利[1,2] 田彦 CHENG Lin;DU Xiaoli;TIAN Yan(Training Center of State Grid Anhui Electric Power Co. , Ltd. , Hefei 230022, China;Anhui Electrical Engineering Professional Technique College, Hefei 230022, China)

机构地区：[1]国网安徽省电力有限公司培训中心,安徽合肥230022 [2]安徽电气工程职业技术学院,安徽合肥230051

出　　处：《安徽电气工程职业技术学院学报》2019年第1期15-20,共6页Journal of Anhui Electrical Engineering Professional Technique College

基　　金：国网安徽省电力有限公司科技项目"分布式光伏发电接入区域电网的优化配置及控制系统研究"(项目编号:52120416000A)

摘　　要：文章主要针对微电网与区域电网并网条件下,研究了多个单相逆变器并联运行的协调控制策略。在考虑微电网与区域中大电网的并网过程中的功率能量流动情况,提出了一种基于相位补偿的改进下垂控制方法。仿真结论证明,在负载突变条件下,提出的算法可以对电网电压/频率进行协调控制。In this paper, the coordinated control strategy for parallel operation of multiple single-phase LCL inverters is studied in conditions of connecting microgrid with regional grid. Taking into consideration the energy flow in the process of microgrid and regional grid interconnection, an improved drooping control method based on phase compensation is proposed. The simulation results show that the proposed algorithm can coordinate the voltage/frequency control of power grid at suddenly changed load.

关 键 词：并网逆变器 下垂控制 区域电网 功率分配 相位补偿 

分 类 号：TM76[电气工程—电力系统及自动化]