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2012•Journal of Wuhan Institute of TechnologyRequires access

Control and principle of islanding effect of photovoltaic grid-connected

Tan Huai-jiang

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Abstract

The islanding problem in grid-connected photoltaics system was analyzed and several methods of detecting islanding effect were compared.There was non-detecting zone problem in the conventional methods of islanding detection,and the islanding detection method based on the power balance of small changes frequence was proposed.This method has the advantages of no undetected zone,high response speed and no influence on the output active power of the system.The simulation results by Matlab/Simulink show the method is effective.

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What this paper is about

The islanding problem in grid-connected photoltaics system was analyzed and several methods of detecting islanding effect were compared.There was non-detecting zone problem in the conventional methods of islanding detection,and the islanding detection method based on the power balance of small changes frequence was proposed.This method has the advantages of no undetected zone,high response speed and no influence on the output active power of the system.The simulation results by Matlab/Simulink show the method is effective.

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Available abstract

The islanding problem in grid-connected photoltaics system was analyzed and several methods of detecting islanding effect were compared.There was non-detecting zone problem in the conventional methods of islanding detection,and the islanding detection method based on the power balance of small changes frequence was proposed.This method has the advantages of no undetected zone,high response speed and no influence on the output active power of the system.The simulation results by Matlab/Simulink show the method is effective.

Key concepts: Islanding, MATLAB, Power Balance, Photovoltaic system, Grid, Power (physics), Control theory (sociology), Computer science

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