Load Frequency Control by use of a Number of Both Heat Pump Water Heaters and Electric Vehicles in Power System with a Large Integration of Renewable Energy Sources

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  • 大量の再生可能エネルギー電源が導入された電力系統における多数台のヒートポンプ給湯機と電気自動車を利用した負荷周波数制御
  • タイリョウ ノ サイセイ カノウ エネルギー デンゲン ガ ドウニュウ サレタ デンリョク ケイトウ ニ オケル タスウ ダイ ノ ヒートポンプ キュウトウキ ト デンキ ジドウシャ オ リヨウ シタ フカ シュウハスウ セイギョ

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Abstract

In Japan, from the viewpoints of global warming countermeasures and energy security, it is expected to establish a smart grid as a power system into which a large amount of generation from renewable energy sources such as wind power generation and photovoltaic generation can be installed. Measures for the power system stability and reliability are necessary because a large integration of these renewable energy sources causes some problems in power systems, e.g. frequency fluctuation and distribution voltage rise, and Battery Energy Storage System (BESS) is one of effective solutions to these problems. Due to a high cost of the BESS, our research group has studied an application of controllable loads such as Heat Pump Water Heater (HPWH) and Electric Vehicle (EV) to the power system control for reduction of the required capacity of BESS. This paper proposes a new coordinated Load Frequency Control (LFC) method for the conventional power plants, the BESS, the HPWHs, and the EVs. The performance of the proposed LFC method is evaluated by the numerical simulations conducted on a power system model with a large integration of wind power generation and photovoltaic generation.

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