Research on Grid-Connected and Off-Grid Switching Distributed Photovoltaic Power System

Xian Kui Wen; Yong Xiao; Shi Jun Chen; Jun Liu

doi:10.4028/www.scientific.net/AMR.953-954.24

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 953-954Research on Grid-Connected and Off-Grid Switching...

Research on Grid-Connected and Off-Grid Switching Distributed Photovoltaic Power System

Abstract:

Photovoltaic power system (PV system) includes grid-connected and off-grid (islanding) types. With the improvement of power supply reliability, it is necessary to provide distributed PV power system with functions of grid-connection and off-grid operation, which as well as being easily switched. This research comparative analyzes on model of AC bus and model of DC bus of grid-connected and off-grid PVsystem and presents the control strategy. In order to safely operate and seamlessly switch grid-connected and off-grid, PV system is furnised constant-power control and constant-voltage frequency control with switching operation. Additionally, the switch junction for off-grid and the public supply system must be connected to the synchronization device for controling system of PV system therefore the PV system can be safely operated and switch from off-grid to grid-connected can be smoothly and rapidly.

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Periodical:

Advanced Materials Research (Volumes 953-954)

Pages:

24-28

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.953-954.24

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Online since:

June 2014

Authors:

Xian Kui Wen, Yong Xiao, Shi Jun Chen, Jun Liu

Keywords:

Control Strategy, Grid Connected, Off-Grid, Pv System, Switching

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