中文關鍵字：
電池儲能系統；備轉容量；備用容量；壅塞；共置儲能；混合電源；儲能為輸電資產
英文關鍵字：
Battery Energy Storage System, BESS;Operating Reserve;Planned Reserve;Congestion;Co-location Energy Storage;Hybrid Resource;Storage as Transmission Asset, SATA
摘要：
隨著大量再生能源的併網，雖然可以實現淨零排放，但也使得維持電力系統的安全可靠度變成一項艱鉅的挑戰。若現有發電資源缺乏調度彈性，很容易造成電網輸電壅塞甚至導致再生能源受削減，進而嚴重地增加電力系統營運成本。為了推動再生能源發展以實現淨零排放的目標，電池儲能逐漸被認為扮演著一個很重要的關鍵角色。本文將探討電池儲能系統(BESS)於再生能源的應用案例，包含轉移多餘的再生能源以降低壅塞或削減問題，電池儲能的快速反應和靈活調度彈性可滿足日益增長的輔助服務需求，可取代即將退役的火力發電源備足充分的備用容量，提供高效率的虛擬容量而減少輸電線路擴充或擴建的昂貴成本，在極端氣候下可提高電力系統的韌性與可靠度等方面。藉由 BESS 的成功案例，為臺灣實現淨零排放提供經驗和借鑒。
The integration of large amounts of renewable energy into the grid can help achieve net-zero emissions, but it also makes maintaining the safety and reliability of the power system a difficult challenge. If the existing power generation resources lack dispatch flexibility, it will easily cause transmission congestion and even lead to a reduction in renewable energy generation, which will seriously increase the operating costs of the power system. In order to promote the development of renewable energy and achieve the goal of net-zero emissions, battery energy storage system (BESS) is gradually considered to play an important role. This article will explore the application cases of BESS in renewable energy, including transferring excess renewable energy to reduce congestion or curtailment. The rapid response and dispatch flexibility of BESS can meet the growing demand for ancillary services, replace retiring thermal power generation sources with sufficient reserve capacity, provide high-efficiency virtual capacity, reduce the expensive cost of transmission line expansion, and in extreme cases improve the resilience and reliability of the power system under extreme climate conditions. The introduction to successful BESS cases in this article may serve as a reference for Taiwan to achieve net-zero emissions.
