摘要
设计了一种基于自适应全局滑模控制的微电网稳定控制策略,并基于储能设备开发了相应的微电网稳定控制器。根据微电网的不同运行方式,首先分析稳定控制器的运行特性,建立稳定控制器的数学模型。考虑到系统的不确定性和非线性,该文为微电网稳定控制器提出自适应鲁棒全局滑模控制系统,保证系统在参数不确定、存在外界干扰等情况下的稳态及动态特性。仿真和实验结果证明,微电网稳定控制器能够保证微电网在不同运行模式下的稳定性。在微电网并网运行时有效地抑制微电网与主电网交换功率波动,达到微电网与主电网交换功率可控;在微电网孤岛运行时,提供电压、频率支持;实现微电网在2种运行模式之间无缝切换。
This paper developed a microgrid stability control strategy based on adaptive total sliding-mode control （SMC）. A physical microgrid controller had been realized following the developed control strategy with energy storage unit. Analysis of microgrid operating characteristics and mathematical models of the controller according to the operation mode are given at first. As the system is inherently nonlinear, time-variable, the authors employ an adaptive total sliding-mode control （ATSMC） to ensure the stability and dynamics of the microgrid stability controller. The simulation and experimental results illustrate that the ARTSMC system is insensitivity to parametric uncertainty and external disturbances. The fast dynamic response and robust control performance of microgrid stability controller ensure the stable operation of microgrid in both modes. It improves controllability of the exchange power between microgrid and utility network, smooth DG output power while the microgrid working in grid-connected mode, provides voltage and frequency support when the microgrid working in islanding mode, meanwhile it ensure seamless transaction between the two operation modes.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2014年第31期5534-5541,共8页
Proceedings of the CSEE
基金
国际能源基金会项目(G-0911-11768)~~
关键词
微电网
稳定控制器
全局滑模控制
自适应
鲁棒性
microgrid
stability controller
total sliding-mode control
adaptive
robust
