多应用场景下构网型变流器的输出特性及其等价性分析

doi:10.19705/j.cnki.issn2096-5125.20250152

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多应用场景下构网型变流器的输出特性及其等价性分析

更新时间：2025-09-17

- 多应用场景下构网型变流器的输出特性及其等价性分析
- Issue 4, Pages: 418-430(2025)
- 作者机构：
  
  1. 中国科学院电工研究所
  2. 中国科学院大学
- 作者简介：
- 基金信息：
- DOI：10.19705/j.cnki.issn2096-5125.20250152
  CLC： TM46
- Published：2025
- 稿件说明：
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[J]. 2025, (4): 418-430.
DOI：

[J]. 2025, (4): 418-430. DOI： 10.19705/j.cnki.issn2096-5125.20250152.

摘要

全球环境问题和化石能源枯竭问题日益受到关注，具有高渗透率可再生能源的新型电力系统技术正在迅速发展。然而，与传统同步机不同，传统的跟网型电力电子变流器无法为系统提供电压和频率支持，从而增加了系统不稳定的风险。为了解决这一问题，构网型变流器被提出。构网型控制方法通过设计功率同步控制律来自主支撑变流器端口电压。基于这一概念，构网型变流器已经成功应用于微电网系统。但随着能源转型的不断推进，部分微网内构网控制技术的简化条件不再适用，面对更多复杂应用场景的构网型变流器输出特性亟需分析和总结。为此，总结并分析了典型构网型变流器的小信号模型以及在复杂应用场景下的输出特性，并分析了不同的典型构网型控制方法间的等效条件。同时，针对含有构网型变流器系统的稳定性问题，首次系统地分析了构网型变流器“虚拟阻尼”“阻尼”和“阻抗”对稳定性的影响。

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