刘维;涂春鸣;兰征;吕志鹏;

• 1:国家电能变换与控制工程技术研究中心(湖南大学)
• 2:中国电力科学研究院

摘要(Abstract)：

针对高渗透率分布式电源发电的间歇性和功率波动性引起的配电网电压/频率不稳定问题,提出了一种具有同步电机特性的电力电子变压器(power electronic transformer,PET)拓扑结构,其维持低压配电网稳定的同时还能实现对上级配电网的友好支撑。将输入级AC/DC变换器融合虚拟同步电机控制策略,并通过直流接口获得功率缓冲,使PET具有同步电机的特性,从而在PET维持低压配电网功率消耗的同时,还具有参与上级配电网电压/频率调节的能力,并有效提高了并网侧接口的惯性与阻尼以及降低了并网电流的谐波畸变率,实现了对上级配电网的友好性支撑。仿真结果验证了所提PET拓扑以及控制策略的有效性。

关键词(KeyWords)： 配电网;电力电子变压器;输入级;虚拟同步电机

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51577055);国家自然科学基金青年基金项目(51207048)~~

作者(Author): 刘维;涂春鸣;兰征;吕志鹏;

Email:

DOI: 10.13335/j.1000-3673.pst.2016.03.037

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