Study on multiple hierarchical DC micro-grid based on photovoltaic generation systems

Author

Jianhua Yuan ; Feng Gao ; Houlei Gao

Author_Institution

Sch. of Electr. Eng. & Renewable Energy, Three Gorges Univ., Yichang, China

fYear

2012

fDate

10-14 Sept. 2012

Firstpage

1

Lastpage

5

Abstract

Micro-grid is suitable for popular utilization of distributed renewable energy generations. It can save grid-connected photovoltaic inverter and some rectifiers for DC loads when connecting photovoltaic generation to local loads by DC micro-grid, and the energy use efficiency increases dramatically. This paper proposed a multiple hierarchical DC micro-grid based on photovoltaic generations. The photovoltaic generations dispersed in different building roofs can be mutual backups while contacting them through DC micro-grid, and the energy storage devices have an easy access to connect in different forms, improving the system reliability and reducing the construction cost.

Keywords

building integrated photovoltaics; cost reduction; distributed power generation; energy storage; invertors; load (electric); power generation economics; power generation reliability; power grids; rectifying circuits; DC loads; building roofs; construction cost reduction; distributed renewable energy generations; energy storage devices; energy use efficiency; grid-connected photovoltaic inverter; multiple hierarchical DC microgrid; photovoltaic generation systems; rectifiers; system reliability improvement; DC micro-grid; multiple hierarchical; optimal efficiency; photovoltaic roof;

fLanguage

English

Publisher

ieee

Conference_Titel

Electricity Distribution (CICED), 2012 China International Conference on

Conference_Location

Shanghai

ISSN

2161-7481

Print_ISBN

978-1-4673-6065-4

Electronic_ISBN

2161-7481

Type

conf

DOI

10.1109/CICED.2012.6508675

Filename

6508675