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光伏与微型燃气轮机混合微网能量管理研究

, PP. 74-84

Keywords: 微网,光伏,微型燃气轮机,能量管理,时间序列法

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Abstract:

在分析光伏发电和微型燃气轮机动态模型及运行特性的基础上,研究了光伏与微型燃气轮机混合微网能量管理策略。基于光伏与负荷功率波动的频率特性,提出了变步长时间序列法预测光伏与负荷功率,控制微型燃气轮机输出。为了保证混合微网运行的可靠性和提高蓄电池的运行效率和工作寿命,提出了模块化的储能蓄电池管理模型。混合微网并网运行时,利用可控的微型燃气轮机平滑光伏功率波动,使混合微网成为一个可调度的功率源;孤岛运行时,储能蓄电池与微型燃气轮机共同补偿光伏与负荷功率的差额,实现微网的稳定运行。采用PSCAD/EMTDC和Matlab联合仿真,证明了本文提出的能量管理策略的正确性,同时可有效减小储能设备配置容量。

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