再生可能エネルギーが導入された離島電力系統における蓄電池を用いた周波数制御方式の検討

摘要

Renewable energy such as photovoltaic power generation and wind power generation has been installed in island power system as countermeasures for high power generation cost and increase of CO_2 emissions. However, when large scale renewable energies are installed in an isolated island power system, large frequency deviation will be expected by power fluctuation of the renewable energy sources. In the previous study, we proposed a new concept of frequency control by battery energy storage system for frequency deviation suppression. The control method is composed of two methods. One is focusing on frequency deviation by feedback control, the other is operated focusing on an active power of the photovoltaic power generation. In this paper, suitable control parameters of the methods are studied.%本稿では，二つの蓄電池の制御方式による周波数制御の動作をシミュレーションに確認した.各制御方式の特徴を生かすためにそれぞれ独立して使用し，最も適切な運転となる出力制御パラメータを検討した結果，方式①：比例ゲインK_P=.25，積分ゲインK_I=0.3方式②：比例ゲインK_P=0.35,微分時間T_D=300[秒]が最適と思われるパラメータであった.