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Designing of a Inverter with Islanding Detection

Author(s):

S.Deepika , Sri Eshwar College of Engieering; B.Hemananth, Sri Eshwar College of Engieering; R.Hariharan, Sri Eshwar College of Engieering; P.Karthick Sivakumar, Altran Solutions India Pvt Ltd

Keywords:

Grid Monitoring, Islanding, Distributed Generators, Line Impedance, Impedance Measurement

Abstract

Photovoltaic (PV) and other sources of renewable energy are being used increasingly in grid-connected systems, for which stronger power quality requirements are being issued. Continuous grid monitoring should be considered so as to provide safe connections and disconnections from the grid. One problem with Distributed Generators (DG) is an unwanted islanding phenomenon. This condition can be dangerous to grid workers who may not realize that the load is still powered even though there is no power from the grid. This paper proposes a new active islanding detection method based on impedance measurement which is a cost effective, simple, and effective method to prevent islanding of grid-connected inverters. Emphasis is placed on a method based on the injection of a non characteristic harmonic in the grid. Some of the injection parameters are tuned in order to get an accurate measurement of line impedance.

Other Details

Paper ID: IJSRDV3I40749
Published in: Volume : 3, Issue : 4
Publication Date: 01/07/2015
Page(s): 1216-1219

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