1. Flexibility of variable-speed pumped-storage unit during primary frequency control and corresponding assessment method. (February 2023) Authors: Xu, Zhenghua; Deng, Changhong; Yang, Qiuling Journal: International journal of electrical power & energy systems Issue: Volume 145(2023) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗