電力系統のレジリエンス強化と脱炭素化の両立に資する再生可能エネルギー電源の脱落特性を考慮した緊急時周波数制御

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  • Emergency Frequency Control considering Self-disconnection Characteristics of Renewable Energy Sources for Enhancement of Power System Resilience and Decarbonization
  • デンリョク ケイトウ ノ レジリエンス キョウカ ト ダツタンソカ ノ リョウリツ ニ シスル サイセイ カノウ エネルギー デンゲン ノ ダツラク トクセイ オ コウリョ シタ キンキュウジ シュウハスウ セイギョ

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<p>The enhancement of power system resilience has been recognized as important after large-scale power outages following disasters, and there has been discussion on ensuring frequency stability for loss of large-scale generation. Also, it is expected that renewable energy sources (RES) will be main power sources in the future under the increasing social demand for decarbonization. In order to realize both the enhancement of power system resilience and the large-scale integration of RES in the future, the authors consider that it will be important to establish the emergency frequency control technologies to cope with the large-scale integration of RES, mainly photovoltaics.</p><p>This paper discusses the issues of emergency frequency control and the technologies to be developed in the future and provides a method to enhance the function of load-side frequency relay considering the self-disconnection characteristics of RES as one of the mid- to long-term measures. The proposed method has been verified by simulating a loss of generation in 60 Hz interconnected power system using the IEEJ WEST 30-machine system model, and the proposed method has been clarified to contribute to the enhancement of power system resilience. The proposed method would be feasible in the case communication control technology is used appropriately.</p>

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