舒展;熊华强;蔡霞;冯双;陈波;程思萌;陶翔;王克;

• 1:国网江西省电力公司电力科学研究院
• 2:东南大学电气工程学院

摘要(Abstract)：

近年来,直驱风电场与交流系统相互作用引发功率振荡的问题引起了国内外学者的广泛关注。文章重点关注并网变流器直流母线电压控制环节,提出了一种增强直驱风机并网系统稳定性的改进控制方法。首先建立了传统直流母线电压控制下直驱风机并网系统的阻抗模型,并解析推导了电压外环控制参数对系统稳定性的影响;在此基础上提出了在电压外环控制系统中引入时变系数的改进控制方法。阻抗分析表明,所提方法可以显著增强系统在振荡频段内的稳定性;通过特征值分析和时域仿真对比了传统电压外环控制方法和所提方法下的系统稳定性,证明了所提方法在不同运行条件下均可以有效改善系统稳定性。

关键词(KeyWords)： 直驱风机;直流母线电压控制;功率振荡;稳定性分析

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51807025);; 国网江西省电力有限公司科技项目(521820170022)~~

作者(Author): 舒展;熊华强;蔡霞;冯双;陈波;程思萌;陶翔;王克;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.1803

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