AUTHOR=Liu Zhihong , Chen Yunyao , Du Yaoxia , Luo Yang TITLE=An evaluation method for power supply guarantee capability of multi-city interconnected power system based on security region JOURNAL=Frontiers in Energy Research VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2024.1532146 DOI=10.3389/fenrg.2024.1532146 ISSN=2296-598X