唐冰婕;迟永宁;田新首;李琰;

• 1:新能源与储能运行控制国家重点实验室(中国电力科学研究院有限公司)

摘要(Abstract)：

近年来,电网的运行中发生了多起由风电并网引发的新型次同步振荡事故,其机理和振荡的影响因素错综复杂。基于频域阻抗模型的阻抗分析法是研究该问题的有效方法,基于考虑电力电子变换器和锁相环动态过程的双馈风电机组阻抗模型,提出了适用于系统次同步振荡稳定性分析的闭环极点稳定性判据,与目前广泛使用的等效电路阻尼稳定性判据进行对比。并将所提判据与灵敏度分析相结合,建立了闭环极点相对灵敏度,研究了关键参数对于系统次同步振荡特性的影响。最后通过时域仿真验证了所提判据与灵敏度在系统次同步振荡分析中的有效性与准确性。

关键词(KeyWords)： 双馈风电机组;次同步振荡;阻抗模型;闭环极点;灵敏度分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51577174)~~

作者(Author): 唐冰婕;迟永宁;田新首;李琰;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.1337

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