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直流微电网离网与并网运行统一控制策略

DOI: 10.13334/j.0258-8013.pcsee.2015.17.013, PP. 4388-4396

Keywords: DCmicrogrid,distributedpowergeneration,energystoragesystem,droopcontrol,autonomouscontrol

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Abstract:

越来越多直流电源及直流负载的应用促进了人们对直流微电网技术的关注。该文以低压单母线型直流微电网系统为研究对象,将系统并网与离网运行模式结合在一起设计基于直流母线电压信息的协调自治控制方案。系统内各单元可依据当前直流母线电压实现并网、离网运行的无缝切换。使用下垂控制对工作在恒压输出下的多个分布式发电单元和蓄电池单元进行功率均分,给出了下垂系数选取原则。提出一种非重要负载降功率运行稳定直流母线电压的控制策略。

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