access icon free Algorithm for islanding detection in photovoltaic generator network connected to low-voltage grid

© The Institution of Engineering and Technology
Received 07/11/2017, Accepted 13/02/2018, Revised 08/02/2018, Published 16/02/2018

A new islanding detection method has been developed based on the analysis of negative sequence components of the voltage at the point of common coupling, using wavelet packet transform. The binary tree classifier is used for decision-making mechanism. The proposed algorithm is able to reduce the non-detection zone to zero and is able to detect islanding within 5 ms. The developed algorithm can also discriminate between the islanding and other events in the system. The simulation results carried out by MATLAB along with Simulink toolbox are used to test the performance of the proposed algorithm in a photovoltaic generator network connected to the low-voltage grid.

Inspec keywords: power distribution faults; power generation faults; distributed power generation; trees (mathematics); photovoltaic power systems; decision making; wavelet transforms; pattern classification; power grids

Other keywords: MATLAB; point of common coupling; nondetection zone reduction; Simulink toolbox; wavelet packet transform; decision making mechanism; photovoltaic generator network; negative sequence component analysis; low-voltage grid; islanding detection method; binary tree classifier

Subjects: Combinatorial mathematics; Integral transforms; Solar power stations and photovoltaic power systems; Distributed power generation

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