AUTHOR=Wang Long , Chang Xucheng , Li Xiang , Huang Wenli , Jiao Yingying TITLE=Corrigendum: Power Grid Frequency Regulation Strategy for Photovoltaic Plant Based on Multiobjective Harris Hawks Optimization JOURNAL=Frontiers in Energy Research VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.894248 DOI=10.3389/fenrg.2022.894248 ISSN=2296-598X