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考虑逆变电源控制模式的微电网三相潮流模型

DOI: 10.13334/j.0258-8013.pcsee.2015.12.006, PP. 2960-2967

Keywords: 分布式电源,微电网,三相不平衡潮流,电流控制

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Abstract:

考虑微电网的不对称性和逆变电源控制特性的多样性,提出适用于微电网三相潮流计算分析的数学模型。从逆变电源两种控制模式的对称条件出发,考虑逆变电源的多种控制目标和控制方式,提出电压控制型逆变电源的改进PQ节点和PV节点潮流模型,以及电流控制型逆变电源的Droop节点和PI节点模型。在此基础上,进一步考虑负荷的电压/频率调节特性,建立了微电网三相潮流模型。采用牛顿-拉夫逊方法求解该模型,并通过IEEE13节点修正系统验证所提模型的有效性。算例结果表明,所提出的潮流模型能够反映逆变电源的控制特性,适用于各种控制模式及控制方式的微电网三相潮流计算分析。

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