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基于系统稳定性分析的微电网阻抗测量技术

, PP. 153-162

Keywords: 微型电网,阻抗测量,方波,电流注入

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Abstract:

微型电网的稳定性与系统的控制方式以及组网设备的各种参数有关,而这些重要的参数又与微电网的阻抗参数有一定的联系。因此系统输入输出阻抗是分析微电网稳定性的重要参数。本文对阻抗判据进行了进一步的推导,使其在工程中的应用更加简单;在阻抗判据的基础上提出了一种基于方波电流注入的阻抗测量技术;通过理论分析计算了微电网各组网部分以及微电网整体的阻抗参数;搭建了三相交流微型电网的仿真模型;开发了交流系统谐波阻抗测量装置。计算、仿真与实验结果验证了所提出的方法的正确性与有效性。

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