AUTHOR=Tan Zhukui , Liu Bin , Tang Saiqiu , Ding Chao TITLE=Concepts and Framework of Controllable Characteristic Evaluation and Bidirectional Interaction Technology of Flexible Load JOURNAL=Frontiers in Energy Research VOLUME=Volume 10 - 2022 YEAR=2022 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.917724 DOI=10.3389/fenrg.2022.917724 ISSN=2296-598X