Operation principle of multiple DC smart grids

Author

Yamauchi, Hayato ; Kina, Masahiko ; Kurohane, Kyohei ; Uchida, Kosuke ; Yona, Atsushi ; Senjyu, Tomonobu

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of the Ryukyus, Okinawa, Japan

fYear

2011

fDate

5-8 Dec. 2011

Firstpage

304

Lastpage

309

Abstract

Recently, smart grid has been attracting attention from the view point of the introduction of more renewable energy. However, due to the fluctuating power output of renewable energy sources, the DC bus voltage fluctuation of DC grid occurs. It becomes a major issue at the time of islanding. This paper presents coordinated operation of multiple DC smart grids. The power system consists of three DC smart grids. Each DC smart grid has PV generations, wind generators and controllable loads. In this paper, the DC bus voltage are maintained within the acceptable range by applying the power consumption control of the controllable loads, the power control by grid-connected converter and the power control by the renewable sources. Effectiveness of the proposed method is verified by simulation results in PSIMR^® environment.

Keywords

photovoltaic power systems; power control; power convertors; smart power grids; wind power plants; DC bus voltage fluctuation; DC smart grids; PSIM environment; PV generations; grid-connected converter; multiple DC smart grids; power consumption control; renewable energy; wind generators; Smart grids; System-on-a-chip; Smart grid; controllable loads; dc distribution; droop characteristic; islanding operation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems (PEDS), 2011 IEEE Ninth International Conference on

Conference_Location

Singapore

ISSN

2164-5256

Print_ISBN

978-1-61284-999-7

Electronic_ISBN

2164-5256

Type

conf

DOI

10.1109/PEDS.2011.6147263

Filename

6147263