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高压电器  2015 

考虑系统多运行方式的微电网逆变控制器参数优化方法

, PP. 115-121

Keywords: 微电网, 小信号稳定, 动态概率特征根, 微分进化算法, 逆变控制器

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Abstract:

微电网中光伏发电出力及负荷波动具有的随机性会造成微电网运行方式的动态变化,为在微电网逆变控制器设计中计及这种动态变化,文中提出了一种基于动态概率特征根分析的微电网逆变控制器参数优化方法。这种方法以特征根的动态概率分布特性为微电网的稳定性评价指标,将微电网中逆变控制器参数的整体优化表示为带不等式约束的非线性优化问题,并利用微分进化算法对该问题进行求解。该方法能够全面准确地计及微电网运行方式多样性对系统稳定性的影响,得到的最优控制参数对系统运行方式的变化具有良好的鲁棒性,仿真结果证明了该方法的有效性。

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