台灣北東電網持續面臨電力供應與需求不匹配的挑戰。此挑戰主要受到電廠除役、用電需求持續成長，以及對液化天然氣（Liquefied Natural Gas/LNG）與間歇性再生能源依賴上升等因素影響，而這些因素對電網的穩定性與彈性造成壓力。北東電網內的龍門核電廠場址原規劃為大型核能電廠之用，具電網戰略位置與饋線併網條件，卻長期閒置未被充分利用。本研究探討以龍門電廠場址轉型為一座電網級儲能設施的潛力，評估其是否能增進北東電網韌性。
本研究透過一系列以 PLEXOS 電業建模軟體進行排程，模擬龍門電廠採用釩液流還原液流電池（Vanadium Redox Flow Battery/VRFB）技術進行充放電營運。研究方法評估多種技術情境（電池營運時長、冬夏季場景、北部電網發電機啟停用），並以放電時長最佳化、輸電壅塞緩解、能源自給率提升與尖峰削減能力作為主要績效指標。模擬結果顯示，「8小時儲能系統＋協和電廠」可為電網有效削減高達 1,500 MW 的尖峰電力需求，提供最具韌性的解決方案。
在工程分析的基礎上，本研究進一步拓展至財務、環境與空間層面的考量。以財務面而言，首先評估系統營運者的損益平衡成本、探討建立結構化社區基金的可能性、並得出冬夏季時段兩種情境的平均服務成本，其中 「4 小時儲能系統＋協和電廠」為每度新台幣 2.5 元，「8 小時儲能系統＋協和電廠」為每度新台幣 3.6 元，反映出儲能系統在不同放電時長條件下的冬夏季時段平均服務成本。環境面強調 VRFB 技術具備良好的回收再利用特性；空間面則凸顯龍門閒置場址之再利用潛力，以及與社區共效益的重要性。
本研究亦建議大型能源基礎設施開發時須考量公正性問題，因國家電網所獲得的效益，往往是以在地社區承擔建設與營運負擔為代價，而社區卻鮮少獲得實質回報。本研究提出，儲能電廠想像可如何與龍門電廠廠址結合，冀能啟發地方與電廠的共生方式，確保社區能共享能源轉型所創造的價值。

The northeastern power grid in Taiwan faces an energy imbalance, characterized by a persistent mismatch between local electricity supply and demand. This imbalance has strained the grid’s ability and flexibility which is provoked by the decommissioning of an aging power plant, growing electricity demand, and rising dependence on liquefied natural gas (LNG) and intermittent renewable sources. In response, this study explores the potential of repurposing the abandoned Longmen Nuclear Power Plant site into a grid-scale energy storage facility based on Vanadium Redox Flow Battery (VRFB) technology. The site is underutilized despite strategic location and grid access. A series of PLEXOS-based simulations evaluate multiple technical scenarios with key performance indicators including discharge duration optimization, transmission congestion relief, energy self-sufficiency, and peak shaving capability. These assessments reveal an optimal configuration, 8-hour BESS together with Hsieh-Ho Power Plant online, effectively shaving up to 1,500 MW from peak demand while maintaining sufficient headroom for additional flexibility. Building upon the optimal configuration result, the study extends the analysis into broader financial, environmental, and spatial considerations. The financial analysis assesses the system operator’s breakeven costs and explores the potential for establishing a structured community fund. The average service cost values – NT$ 2.5 /kWh for the 4-hour system and NT$ 3.6 /kWh for the 8-hour system, represent the estimated unit cost of service provided by the BESS under two different scenarios, reflecting short-term revenue efficiency rather than long-term system suitability. Environmental consideration emphasizes VRFB’s recyclability. Spatial consideration highlights the repurpose of an idle, state-owned site. Importantly, technical analysis bridges a common issue in large-scale energy projects, where national grid benefits often overlook host communities. By aligning system improvements with local benefits, this study promotes a more inclusive approach, repurposing abandoned infrastructure into a sustainable asset that strengthens resilience and supports community co-existence.

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