| Title |
Bi-directional Power Flow in Switchgear with Photovoltaic System and WTG |
| DOI |
https://doi.org/10.5370/KIEE.2019.68.12.1711 |
| Keywords |
DC; Smart Grid; Distributed generation; Photovoltaic system; Wind Turbine; Power flow |
| Abstract |
This paper described bi-directional power flow in the switchgear with PV(Photovoltaic) and WTG(Wind turbine Generator) PCS systems. This system implemented based on smart-grid operation system, Main concept is switchgear system with single inverter integrated in the inside of the switchgear for PV and WTG converter. Currently most of switchgear which is installed on building are operates in one-way. But smart-grid systems required two-way power flow in distribution power system. We design switchgear systems with functions two-way power flow, islanding, grid-connected inverter, etc. This systems are composed of switchgear, transfer switch, inverter, IED and etc. Main controller is IED(Intelligent Electronic Devices) that communicate with distribution automatic system. Grid-connected inverter controls each converter systems for PV and WTG and decision faults of the grid. And main topology of this system is DC bus system. Therefore each DG(Distributed Generation) converters simply plug in to inverter.
Following figure shows overall diagram of plug-in type switchgear system. |