Reduction of power fluctuation by distributed generation in micro grid

Takao Shinji, Tsuyoshi Sekine, Atsushi Akisawa, Takao Kashiwagi, Goro Fujita, Masayoshi Matsubara

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Renewable forms of energy such as wind power or photovoltaic energy are environmentally focused, but the fluctuation of the output power of such renewable forms of energy may cause excessive variation of the voltage or frequency of the grid. Increasing the amount of renewable energy would degrade the quality of the grid. Micro grids, in which dispersed power sources compensate variations in the generation of renewable energy, can expand the limits of installation of renewable forms of energy by maintaining the quality of the interconnected grid. This paper discusses the use of gas turbines to absorb power variations from wind generation and the loads. In order to control the output power, gas turbines must run under partial load, which results in lower efficiency. An evaluation of the micro grids is made with consideration of their efficiency, the installed capacity of wind power generation systems, and frequency stability for islanded operation.

Original languageEnglish
Pages (from-to)22-29
Number of pages8
JournalElectrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)
Issue number2
Publication statusPublished - 2008 Apr 30


  • Cogeneration
  • Dispersed power source
  • Frequency fluctuation
  • Micro grid
  • Renewable energy
  • Wind power

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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