A study on Anti-Islanding Detection Algorithms for Grid-Tied PV Systems

Author(s):

I. V. Banu; M. Istrate; D. Machidon; R. Pantelimon

Faculty of Electrical Engineering, Technical University of Iasi

Abstract:

This study analyzes various anti-islanding (AI) protection relays when the islanding condition of Grid-Tied PV (Photovoltaic) System appears at the Point of Common Coupling (PCC) between the PV Solar Power System and the power grid. The main purpose of the study is to determine the performance of several AI prevention schemes in detecting the presence of an island, by monitoring the detection time of the islanding condition through different methods. The devices used to implement the methods include over-current and under-current (OI/UI) relays, over-voltage and under-voltage (OV/UV) relays, over-frequency and under-frequency (OF/UF) relays, rate of change of frequency (ROCOF) and Vector Shift relays. The protection was tested in case of complete disconnection of the photovoltaic system from the electric power grid and also in case of various grid faults.

Keywords:

Relays, Artificial Intelligence, Islanding, Photovoltaic Systems, Power Conversion

Published in:

Optimization of Electrical and Electronic Equipment (OPTIM), 2014 International Conference on

Date of Conference:

2-5 Sept. 2014