Modeling Of Micro-grid With Power Electronic Transformer Its Effects On AC System

摘要

Different devices are used to connect the micro-grid with the main network. As of their performance difference, the effect on main-network may not be the same, so it is necessary to carry out relevant research. Firstly, based on the structure of PET, one of the advanced access device, a steady-state analysis model is constructed in ETAP. Secondly, according to the composition of the discussed micro-grid, its operational analysis is done when the supply and demand vary. Finally, the variation of power loss, voltage deviation, harmonic components in the main grid, which reflect the influence of micro-grid with PET are shown. Meanwhile, the corresponding control strategy of PET is also given.