Xin Xu Gives CURENT Power and Energy Seminar on Friday, April 3rd
Xin Xu will give the CURENT Power and Energy Seminar this Friday, April 3rd from 12:20 pm to 1:10 pm. This seminar is available for viewing via ZOOM. 
When: Friday, April 3, 2020 from 12:20pm to 1:10pm
Where: Online on Zoom (see Zoom instructions at bottom of this article)
Presenter: Xin Xu, University of Tennessee
Title: Nonlinear modal decoupling (NMD) for power system stability monitoring
Abstract: Nonlinear modal decoupling (NMD) was recently proposed to nonlinearly transform a multi-oscillator system into as many decoupled oscillators as the oscillation modes of interests with the original system. Those decoupled oscillators together provide a fairly accurate approximation of behaviors of the original system in an extended neighborhood of the equilibrium. Each oscillator has just one degree of freedom and hence can easily be analyzed to infer the nonlinear dynamics of the original system associated with one oscillation mode. As the first attempt of applying the NMD methodology to realistic power system models, an NMD-based approach is proposed for the early warning of the oscillation mode that may most likely develop into a mode of transient instability. For a multi-machine power system, the approach first derives decoupled nonlinear oscillators by a coordinates transformation, and then applies Lyapunov stability analysis to decoupled oscillators to assess the stability of the original system. For large-scale power grids, the proposed approach can be efficiently applied by conducting NMD regarding only selected modes. Case studies on an NPCC 48-machine 140-bus system show the potentials of the approach in early warning of transient instability for multi-machine systems.
Bio: Xin Xu (S’15) received the B.E. and M.E. degree in electrical engineering from Shandong University, in 2013 and 2016, respectively. He is now pursuing his Ph.D. degree at the department of EECS, University of Tennessee at Knoxville. His main research interests include nonlinear system dynamics, stability assessment and control, and renewable resources
Zoom Information:
Join from PC, Mac, Linux, iOS or Android: https://tennessee.zoom.us/j/711256283
Or iPhone one-tap (US Toll): +16468769923,711256283# or +16699006833,711256283#
Or Telephone: +1 646 876 9923 (US Toll) +1 669 900 6833 (US Toll) Meeting ID: 711 256 283
International numbers available: https://zoom.us/u/aFK5Bq5SR
Or an H.323/SIP room system: H.323: 162.255.37.11 (US West) or 162.255.36.11 (US East) Meeting ID: 711 256 283
Upcoming Seminars
Friday, April 10th - No Seminar Spring Recess
Friday, April 17th - Liyan Zhu, University of Tennessee
Friday, April 24th - Industry Seminar with Srijib Mukherjee of ORNL
Please note all seminars are online for the rest of this semester
See the CURENT calendar for more news and seminars
