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基于逆变器的分布式发电系统反孤岛控制的小信号建模与分析

, PP. 232-237

Keywords: 分布式发电系统,孤岛检测,小信号模型,稳定性,最大功率传输

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Abstract:

分布式发电系统要求具有孤岛检测的功能,通常采用带有正反馈扰动的孤岛检测算法。分布式发电系统的孤岛检测性能与系统稳定性之间存在矛盾。文章通过分布式发电系统的小信号模型,分析了带正反馈反孤岛控制时系统的稳定性。通过分析正反馈反孤岛增益与系统功率传输能力以及系统最大功率传输限与孤岛检测时间之间的关系,说明了主动相位偏移反孤岛算法有关参数对系统稳定性及系统功率传输能力的影响,为设计反孤岛算法的参数及确定系统最大功率传输能力提供了依据。

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