Wavelet-Based Islanding Detection in Grid-Connected PV Systems

被引：138
|
作者：
Pigazo, Alberto [1 ]
Liserre, Marco [2 ]
Mastromauro, Rosa A. [2 ]
Moreno, Victor M. [1 ]
Dell'Aquila, Antonio [2 ]
机构：
[1] Univ Cantabria, Dept Elect & Comp, E-39005 Santander, Spain
[2] Politecn Bari, Dept Elect & Elect Engn, I-70126 Bari, Italy
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2009年 / 56卷 / 11期
关键词：
Islanding; photovoltaic (PV) power systems; wavelet transforms; RENEWABLE ENERGY-SOURCES; IMPLEMENTATION; CONVERTER; ALGORITHM; INVERTER;
D O I：
10.1109/TIE.2008.928097
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Distributed power generation systems (DPGSs) based on inverters require reliable islanding detection algorithms (passive or active) in order to determine the electrical grid status and operate the grid-connected inverter properly. These methods are based on the analysis of the DPGS voltage, current, and power in time or frequency domain. This paper proposes a time-frequency detection algorithm based on monitoring the DPGS output power considering the influence of the pulsewidth modulation, the output LCL filter, and the employed current controller. Wavelet analysis is applied to obtain time localization of the islanding condition. Simulation and experimental results show the performance of the proposed detection algorithm in comparison with existing methods.
引用
收藏
页码：4445 / 4455
页数：11
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