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基于相对增益分析的目标函数对角化微网功率解耦控制方法

DOI: 10.13334/j.0258-8013.pcsee.2014.13.004, PP. 2039-2046

Keywords: 微网,微电源,相对增益分析,目标函数对角化,功率解耦

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Abstract:

微网技术可有效整合不同类型新能源及可再生能源分布式发电的优势,为新能源及可再生能源分布式并网发电的规模化应用提供有效可行的技术途径.微网多样的运行方式与高质量的电力服务,离不开灵活与稳定的控制系统,而对微电源输出有功、无功的独立控制问题亟待研究.针对微网线路参数特点引起的有功无功耦合问题,提出了基于相对增益分析的目标函数对角化微网功率解耦控制方法,将相对增益分析方法应用于低压微网线路功率模型的配对选择,量化控制通道耦合度,应用目标函数对角化的解耦方法,最终实现微网线路有功功率和无功功率的独立控制.仿真实验表明,提出的解耦方法解决了微网线路功率耦合问题,可实现微网系统有功、无功功率的独立灵活调节.

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