전원 유연성 확보를 위한 다종 에너지저장시스템에 대한 검토 = Reviews of Diverse Energy Storage Systems for Ensuring Power Flexibility

다국어 초록 (Multilingual Abstract)

Energy storage systems play a critical role in achieving carbon neutrality goals by enabling the integration of renewable energy sources and providing reliable and flexible electricity supply. By storing excess energy generated from renewable sources during low demand periods, energy storage systems can ensure a stable supply of energy during peak demand periods. Additionally, they can reduce the need for conventional fossil fuel-based power plants, which can help to reduce greenhouse gas emissions. The development and deployment of cost-effective energy storage systems are crucial for the transition towards a sustainable, low-carbon energy system.
By applying various types of batteries including lithium-ion batteries to energy storage systems(ESS), the diversification of power-based ESS was achieved. After integrating them into the power grid, further research on performance analysis was conducted to reduce the investment cost and enhance the stability of ESS. By considering the performance and cost-effectiveness based on specific requirements for different applications and environmental conditions, including lithium-ion batteries, NaS batteries, rechargeable Redox flow batteries, and commercially available ESS, appropriate ESS systems can be established for various purposes in the power industry. This will contribute to the realization of carbon neutrality and the implementation of a combined ESS for power applications.

목차 (Table of Contents)

• Ⅰ. 서론 1
• Ⅱ. 에너지저장시스템 5
• 2.1 에너지저장시스템(ESS) 원리 5
• 2.1.1 리튬이온(Lithium-ion) 전지 5
• 2.1.2 NaS(Natrium-Sulfur) 전지 7
• 2.1.3 레독스 플로우(Rechargeable Redox Flow) 전지 8
• 2.2 전력 계통의 경직성 전원과 유연성 전원 9
• 2.2.1 경직성 전원(Rigid Power Supply) 10
• 2.2.2 유연성 전원(Flexible Power Supply) 10
• 2.2.3 에너지저장시스템의 전력 계통 유연성 11
• 2.3 에너지저장시스템(Energy Storage System, ESS)의 비교 12
• 2.3.1 리튬이온 배터리의 특징 12
• 2.3.2 NaS 배터리의 특징 13
• 2.3.3 Redox Flow Battery의 특징 14
• 2.4 에너지저장시스템별 안전성 15
• 2.4.1 리튬이온 배터리의 안전 특성 15
• 2.4.2 NaS 배터리의 안전 특징 16
• 2.4.3 Redox Flow Battery의 안전 특징 17
• 2.5 에너지저장시스템의 경제성 18
• 2.5.1 리튬이온 배터리, NaS 및 Redox Flow 배터리 최적 선정 18
• 2.6 기존 화력발전과의 에너지저장시스템 연계 방안 도출 20
• Ⅲ. 결론 22
• 참고 문헌 23
• 감사의 글 25