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一种逆变并网型分布式电源统一模型

, PP. 145-154

Keywords: 电力系统,分布式电源,逆变并网,统一动态模型

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Abstract:

为研究分布式电源(DG)对配电网综合负荷特性的影响,详细分析含燃气轮机发电、光伏电池、燃料电池、直驱式风力发电等在内的逆变型分布式电源的各自特点及其共有特性,提出了由受控电压源串联等值阻抗构成的逆变型分布式电源的统一动态模型,推导出了该模型的完整解析描述。在不同的电压跌落水平条件下,采用综合改进的遗传算法进行模型参数辨识,并对该模型的自描述能力、泛化能力和参数稳定性进行了分析验证。验证结果表明,该模型具有较好的适用性,能够较好地描述逆变型分布式电源的动态等效特性。

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