微电网孤岛模式下全钒液流电池逆变器控制  

Control strategy for vanadium redox battery inverter in islanding microgrid

作　　者：周峰[1] 王科[1] 朱桂萍[1] 陈建业[1] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京100084

出　　处：《中国电力》2011年第3期81-85,共5页Electric Power

基　　金：优秀国家重点实验室专项基金资助项目(50823001)

摘　　要：储能单元在微电网中能起到平定负荷、改善电能质量的作用,其中全钒液流电池以其诸多高性能在微电网有广泛应用前景。提出一种在微电网孤岛模式下全钒液流电池逆变器的双环控制策略。内环控制在对电流进行d、q坐标系分量进行解耦基础上,设计了PI控制器;外环控制基于类似发电机的功率、频率下垂曲线,并根据微电网低压系统的特点,采用电压-有功和频率-无功控制方式。仿真及装置实验的结果证明了双环控制策略的有效性。Energy storage in microgrid has ability to load smooth and power quality improvement. Vanadium redox battery has broad application prospects in microgrid because of high-performance characteristics. A dual-loop control strategy is proposed for vanadium redox battel7 inverter in islanding mode. Tile inner-loop control designs a PI controller ＇after transforming the single-phase system into thine-phase system, and the outer-loop control which is based on droop curve similar to generator, adopts the V/P f/Q control strategy according to the characteristics of low-voltage microgrid. The proposed dual-loop control strategy has been tested in MATLAB/Simulink simulations and on a laboratory-scale experimental system.

关 键 词：微电网 全钒液流电池 逆变器 双环控制 

分 类 号：TM911.49[电气工程—电力电子与电力传动] TM912.1