Real-World Subsynchronous Oscillation Events in Power Grids With High Penetrations of Inverter-Based Resources
Yunzhi Cheng, Lingling Fan, Jonathan Rose, Shun-Hsien Huang, John Schmall, Xiaoyu Wang, Xiaorong Xie, Jan Shair, Jayanth R. Ramamurthy, Nilesh Modi, Chun Li, Chen Wang, Shahil Shah, Bikash C. Pal, Zhixin Miao, Andrew Isaacs, Jean Mahseredjian, Jenny Zhou
Abstract
This paper presents a survey of real-world subsynchronous oscillation events associated with inverter-based resources (IBR) over the past decade. The focus is on those oscillations in the subsynchronous frequency range known to be influenced by power grid characteristics, e.g., series compensation or low system strength. A brief overview of the historical events is presented followed by detailed descriptions of a series of events. This paper also examines causation mechanisms and proposes future research directions to meet grid needs worldwide.