吴云亚;阚加荣;谢少军;汤雨;薛迎成;

• 1:盐城工学院电气工程学院
• 2:南京航空航天大学自动化学院

摘要(Abstract)：

采用滑模频率偏移(slide-mode frequency shift,SMS)法、Sandia频率偏移(sandiafrequency shift,SFS)法检测孤岛时,并网逆变器存在相位检测延时,会对孤岛检测盲区的精度产生一定的影响。为克服这一问题,在前期工作的基础上改变下垂锁相环的扰动参数,进而提出改进的频率偏移孤岛检测方法(islanding detection method,IDM)。推导了3种孤岛检测方法在电网频率突变、电网频率偏离额定值2种情况下逆变器并网基准电流的表达式,分析了各自的谐波含量,在具有相同孤岛检测盲区的情况下所提IDM性能最优。仿真结果验证了理论分析的正确性。

关键词(KeyWords)： 并网逆变器;下垂特性;锁相环;无孤岛检测盲区;并网电流;相位检测延时;总谐波畸变率

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51577164;51107108;51407153)~~

作者(Author): 吴云亚;阚加荣;谢少军;汤雨;薛迎成;

Email:

DOI: 10.13335/j.1000-3673.pst.2016.03.044

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