雷鸣宇;杨子龙;王一波;许洪华;

• 1:中国科学院电工研究所

摘要(Abstract)：

常规的孤岛检测方法主要适用于单机光伏并网系统,在逆变器集群系统应用时存在局限性。滑模频率漂移法是一种被广泛应用的主动式孤岛检测方法,分析多逆变器并联运行情况下的公共并网点电流波形后发现,该方法可能由于系统线路阻抗的存在,导致检测盲区向频率下降方向倾斜,加大了光伏并入弱电网情况下孤岛检测失效的风险,同时延长了反应时间。为此,提出了一种具有电流误差相位补偿作用的改进滑模频率漂移法,能够有效降低逆变器集群电流相位不一致产生的影响。仿真结果验证了所提方法的有效性。

关键词(KeyWords)： 逆变器集群;光伏发电;孤岛检测;滑模频率漂移法

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划项目(863计划)(2011AA05A106)~~

作者(Author): 雷鸣宇;杨子龙;王一波;许洪华;

Email:

DOI:

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