陈继开;王鹏;徐永海;姜齐荣;李国庆;

• 1:东北电力大学电气工程学院
• 2:华北电力大学电气与电子工程学院
• 3:清华大学电机工程与应用电子技术系

摘要(Abstract)：

为确保风电区域网内动态无功合理分布和电压达标,大量静止无功发生器(static var generator,SVG)被接入风场和风场汇流站,但由于SVG机间交互作用导致的设备负交互问题也开始显现。针对此类问题,首先分析H桥级联型SVG双机拓扑结构,针对双机载波异步条件下产生的机间高次谐波电压差进行数学推导,研究高次谐波环流对SVG内H桥子模块电容直流电压动态稳定性的影响。通过对各H桥子模块电容吸收有功功率差异的推导分析,发现非特征谐波与H桥子模块直流电压失衡之间的内在联系,指出当谐波环流导致非特征次谐波越限时,将会引发各H桥模块直流电压不平衡,并且提出一种直流电压均衡控制策略来解决SVG直流电压失衡的问题,实现各H桥子模块直流电压稳定,最后通过仿真验证了理论分析和所提控制策略的正确性。

关键词(KeyWords)： SVG;非特征次谐波;谐波交互;直流电压失衡;抑制方法

Abstract:

Keywords:

基金项目(Foundation): 吉林省发改委技术研究开发项目(2019C058-6);; 吉林省科技厅国际科技合作项目(20190701014GH)~~

作者(Author): 陈继开;王鹏;徐永海;姜齐荣;李国庆;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.1226

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