毛剑波,吴国祥

• 1:南通大学电气工程学院
• 2:南通大学电子信息学院

摘要(Abstract)：

大规模风电接入对电力系统影响巨大,低电压穿越(LVRT)能力成为全球电网公司针对风电并网制定的硬性指标。根据该指标对对称电网故障工况下双馈感应电机(DFIG)电磁瞬态过程进行深入分析,研究一种基于去磁控制机理的低电压穿越控制策略。在转子侧注入与定子自由磁链方向相反的去磁电流,能有效抑制磁链过渡分量、减小转子感应电动势、提升DFIG低电压穿越能力。利用Matlab/Simulink平台进行仿真,结果证明该控制策略能扼制瞬态电压冲击,协助系统迅速恢复,且控制结构简单、灵活性高。

关键词(KeyWords)： 低电压穿越;对称故障;双馈感应电机;电磁瞬态过程;去磁控制;系统恢复

Abstract:

Keywords:

基金项目(Foundation): 中国博士后基金(2012M510842)~~

作者(Author): 毛剑波,吴国祥

DOI: 10.16652/j.issn.1004-373x.2018.17.022

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