A Novel Islanding Detection Method for Photovoltaic Grid Connected System

It is very important to detect islanding effect timely and accurately in the case of power grid failure. Therefore, a new periodic perturbation positive feedback active frequency drift method is proposed in this paper. When the power grid fails, the inverter output voltage frequency always has obvio...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 170; no. 4; pp. 42142 - 42147
Main Authors Huang, Xiaobo, Xia, Fei, Xia, Zongze, Cong, Peixian, Di, Zhuo, Yang, Zhixiong, Song, Li
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.07.2018
Subjects
Control methods
Electric power distribution
Electric power systems
Fault detection
Frequency drift
Inverters
Periodic variations
Perturbation
Photovoltaics
Positive feedback
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Summary:It is very important to detect islanding effect timely and accurately in the case of power grid failure. Therefore, a new periodic perturbation positive feedback active frequency drift method is proposed in this paper. When the power grid fails, the inverter output voltage frequency always has obvious change under the different load of inverter, and the islanding effect can be detected quickly and accurately by this control method. Experimental results show that the proposed method can detect grid faults quickly and accurately under different load conditions.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/170/4/042142