IEEE IBR/IBL SSO Taskforce

The task force of Modeling Subsynchronous Oscillations in Wind Energy Interconnected Systems (“Wind SSO”) was created in 2017 under Modeling and Analysis of System Transients using Digital Programs Working Group, Transient Analysis and Simulations Subcommittee (TASS), Analytic Methods for Power Systems (AMPS) Committee. In 2021, Wind SSO taskforce was renamed to IBR SSO taskforce to include all types of  inverter-based resources such as wind and solar generation. In 2025, IBR SSO taksforce was renamed to IBR/IBL SSO taskforce to include inverter-based load or power electronic load as well.

Chair: Lingling Fan (USF)

Co-Chair: Yunzhi Cheng (ERCOT)

Recent Taskforce Activities

Taskforce meeting with the topic of "IBR SSO - Events, Studies, Detection and Solutions" at 2024 IEEE PES GM, July 24 , 2024, Seattle, Washington, USA. Meeting Minutes

Panel session "Inverter-based Resource Oscillations: Real-World Events and Root Cause Analysis " at 2023 IEEE PES GM, July 20,  2023, Orlando, Florida, USA

Taskforce meeting at 2023 IEEE PES GM, July 18, 2023, Orlando, Florida, USA. Meeting Minutes

Panel Session of "Resonance and Oscillations in Wind Farms and Solar PVs" at 2022 IEEE PES GM, July 20, 2022, Denver, Colorado, USA

Taskforce meeting at 2022 IEEE PES GM, July 20, 2022, Denver,  Colorado, USA. Meeting Minutes

A task force Youtube channel has been created. Link

Panel session of "IBR Grid Integration: Operation Challenges and the New Stability Assessment Paradigm Based on Black-box Models" at 2021 IEEE PES GM (Virital Meeing), July 2021

Panel session of "Wind SSO: Real-World Events and Advanced Modeling" at 2020 IEEE PES GM (Virtual Meeting), August 2020

*Task Force Report, "Wind Energy Systems Sub-Synchronous Oscillations: Events and Modeling", July 2020, IEEE PES Resource Center

Taskforce meeting (Online), July 15, 2020. Meeting Minutes

Panel session of "Wind Gneration SSO: Event, Modeling and Studies" at 2019 IEEE PES GM, August 7, 2019, Atlanta, Gorgia, USA.

Taskforce meeting at 2019 IEEE PES GM, August 6, 2019, Atlanta, Gorgia, USA. Meeting Minutes 

Taskforce meeting at 2018 IEEE PES GM, August 8, 2018, Portland, Oregon, USA. Meeting Minutes

Industry Activities 

"Diagnosis and Mitigation of Observed Oscillations in IBR-Dominant Power Systems: A PRACTICAL GUIDE", ESIG Stability Task Force, August 2024

Session 8A: System Oscillations, 2024 Spring Technical Workshop - ESIG 

"Guidelines for Subsynchronous Oscillation Studies in Power Electronics Dominated Power Systems", CIGRE C4/B4 Technical Brochures, 2023

Sub-Synchronous Oscillations (SSO) Workshop, EPRI, April 2023 

Trainings & Webinars 

"Immittance-Based Frequency-Domain Stability Analysis and Design of Converter-Interfaced Resources and Power Systems", online course taught by Prof. Jian Sun with Suppor by Energynautics (Germany), https://immittance-methods.net/

IEEE Webinar: Inverter-based Resources Subsynchronous Oscillatioins: Events and Mechanism Analysis (July 6, 2022), available at  https://resourcecenter.ieee-pes.org/education/webinars/PES_ED_WEB_IRS_070622.html (need to sign in IEEE account to view the video and slides)