%0 Journal Article %T An adaptive under-frequency optimal control strategy for power system combined pumped storage and under-frequency load shedding %A Huang, Wentao %A Yu, Jinman %A Yuan, Zhijun %A He, Zhongwei %A He, Jun %A Deng, Minghui %J PLoS ONE %V 16 %N 12 %D 2021-12-09 %I Public Library of Science %~ DeepDyve