재생발전원 확충에 따른 호남-수도권간 송전선로 과부하 해소를 위한 BESS 적용 효과 분석 = Effect Analysis of BESS for resolving the overloading on T/L of Honam-Capital Area due to Expansion of Renewable Energy Sources

다국어 초록 (Multilingual Abstract)

Recently, in power systems, the integration of RES(renewable energy sources) under the RE100 initiative has accelerated regional imbalances in electricity supply-demand, resulting in increasing transmission congestion between demand areas and supply areas. In particular, large-scale RES in the Honam region has caused substantial northbound power flows through the T/L of Honam-Capital areas in Korea, which serves as a critical corridor connecting the southern and central regions. Excessive power transfer on this line can lead to overloads and voltage instability, especially in the event of a line outage.
This study proposes a congestion mitigation method using Battery Energy Storage Systems (BESS) to reduce line loading by determining its efficient location and capacity. PSS/E-based simulations were conducted to verify the effectiveness of the proposed method employing KEPCO power system database. A Impact Factor() was developed to quantitatively evaluate the effect of BESS on power flow control under realistic renewable generation scenarios.
Simulation results confirmed that the effectiveness of BESS in mitigating T/L overloads significantly depends on its installation location. BESS on the site with a high could achieve compliance with transmission limits using a moderate capacity, while BESS on other sites with low required larger capacity or failed to meet constraints.
These findings demonstrate that appropriate BESS siting can effectively alleviate transmission overloading and enhance operational flexibility. The proposed provides a practical framework for identifying efficient locations of BESS and supports future planning and operation strategies in power systems with high level of renewable penetration.

목차 (Table of Contents)

• 제 1 장 서론 1
• 1.1 연구 배경 1
• 1.2 제안 사항 2
• 1.3 논문의 구성 4
• 제 2 장 국내 전력계통의 재생에너지 확충계획과 BESS 현황 5
• 2.1 국내 전력계통의 재생에너지 확충계획 및 주요 논점 5
• 2.2 국내 전력계통의 BESS 확충 현황 및 적용 방안 11
• 제 3 장 BESS를 이용한 호남-수도권 간 융통 선로 과부하 해소 효과 분석 15
• 3.1 BESS를 이용한 호남-수도권 간 융통 선로 과부하 해소 15
• 3.2 호남-수도권간 송전선로 과부하 저감를 위한 BESS 적용 효과 분석 방법 18
• 제 4 장 사례 연구 21
• 4.1 국내 전력계통 및 BESS 모델링 21
• 4.2 BESS를 이용한 호남-수도권 융통 선로 전력 조류 제어 효과 분석 26
• 4.3 호남-수도권 융통 선로 과부하 해소를 위한 BESS 용량 산정 34
• 제 5 장 결 론 39
• 참 고 문 헌 41