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微电网运行模式平滑转换的混合控制策略

DOI: 10.13334/j.0258-8013.pcsee.2015.17.012, PP. 4379-4387

Keywords: microgrids,seamlesstransferring,hybridcontrol,master-slavestructure,droopcontrol

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Abstract:

针对主从结构的微电网系统,提出一种混合控制策略,并网运行时主控逆变器以下垂控制运行,孤岛运行时下垂系数则自动减小为零,简化为v/f控制。针对并网下垂控制和孤岛v/f控制之间的转换过程,提出相应的控制逻辑。引入无功闭环控制,解决了常规下垂控制算法在并网运行时无功分量无法准确控制的问题。随后,建立基于下垂控制的主逆

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