Study on Isolated Island Detection Technology of Distributed PV Grid System

Abstract

The detection method of isolated island phenomenon can be divided into three kinds, passive detection, active detection and switch state monitoring. The distributed photovoltaic grid connected power generation equipment mainly consists of photovoltaic module and its support, lightning protection and photovoltaic converge box, photovoltaic grid connected inverter, system lightning protection device design and so on. The islanding detection platform is usually applied to the identification and detection of the photovoltaic grid connected inverter’s anti islanding effect, and it is also applied to the islanding test and identification test of grid connected power supply. The paper presents study on isolated island detection technology of distributed PV grid system.