How to Integrate Variable Power Source into a Power Grid

  • Asano Hiroshi
    Central Research Institute of Electric Power Industry Graduate School of Frontier Sciences, The University of Tokyo

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  • 出力変動電源の系統連系技術
  • シュツリョク ヘンドウ デンゲン ノ ケイトウレンケイ ギジュツ

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This paper discusses how to integrate variable power source such as wind power and photovoltaic generation into a power grid. The intermittent renewable generation is expected to penetrate for less carbon intensive power supply system, but it causes voltage control problem in the distribution system, and supply-demand imbalance problem in a whole power system. Cooperative control of customers' energy storage equipment such as water heater with storage tank for reducing inverse power flow from the roof-top PV system, the operation technique using a battery system and the solar radiation forecast for stabilizing output of variable generation, smart charging of plug-in hybrid electric vehicles for load frequency control (LFC), and other methods to integrate variable power source with improving social benefits are surveyed.

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