Online optimization method for operation of generators in a micro grid

Yasuhiro Hayashi*, Hideki Miyamoto, Junya Matsuki, Toshio Iizuka, Hitoshi Azuma

*この研究の対応する著者

研究成果: Article査読

23 被引用数 (Scopus)

抄録

Recently a lot of studies and developments about distributed generator such as photovoltaic generation system, wind turbine generation system and fuel cell have been performed under the background of the global environment issues and deregulation of the electricity market, and the technique of these distributed generators have progressed. Especially, micro grid which consists of several distributed generators, loads and storage battery is expected as one of the new operation system of distributed generator. However, since precipitous load fluctuation occurs in micro grid for the reason of its smaller capacity compared with conventional power system, high-accuracy load forecasting and control scheme to balance of supply and demand are needed. Namely, it is necessary to improve the precision of operation in micro grid by observing load fluctuation and correcting start-stop schedule and output of generators online. But it is not easy to determine the operation schedule of each generator in short time, because the problem to determine start-up, shut-down and output of each generator in micro grid is a mixed integer programming problem. In this paper, the authors propose an online optimization method for the optimal operation schedule of generators in micro grid. The proposed method is based on enumeration method and particle swarm optimization (PSO). In the proposed method, after picking up all unit commitment patterns of each generators satisfied with minimum up time and minimum down time constraint by using enumeration method, optimal schedule and output of generators are determined under the other operational constraints by using PSO. Numerical simulation is carried out for a micro grid model with five generators and photovoltaic generation system in order to examine the validity of the proposed method.

本文言語English
ページ(範囲)388-396+2
ジャーナルIEEJ Transactions on Power and Energy
128
2
DOI
出版ステータスPublished - 2008
外部発表はい

ASJC Scopus subject areas

  • エネルギー工学および電力技術
  • 電子工学および電気工学

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