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Large-scale high-performance power system dynamic simulation

Ruisheng Diao


Time-domain dynamic simulations are heavily used in today’s planning and operation practices to assess power system transient stability and post-transient voltage/frequency profiles as well as oscillatory behavior following severe contingencies to comply with industry standards. Because of the increased modeling complexity, it is many times slower than real time for state-of-the-art commercial software packages to complete a dynamic simulation for a large-scale model. With the growing stochastic behavior introduced by emerging technologies, power industry has seen a growing need for performing security assessment in real time.

This talk presents parallel implementation framework and techniques developed at Pacific Northwest National Laboratory to speed up large-scale dynamic simulations by leveraging the stability model library in commercial tools and state-of-the-art parallel computing libraries. Several high performance computing (HPC) techniques are explored such as parallelizing the calculation of generator current injection, identifying fast linear solvers for network solution, and parallelizing data outputs. Two important applications, including real-time path rating calculation and high-fidelity cascading failure analysis under extreme events will be introduced.


Dr. Ruisheng Diao received his Bachelor and Master degree in Electrical Engineering from Zhejiang University, China, in 2004 and 2006 respectively. He obtained his Ph.D. degree in Electrical Engineering from Arizona State University, Tempe, AZ, in 2009. Since then, he joined Pacific Northwest National Laboratory, as a power system research engineer.

Serving as a project manager, PI, and key technical contributor, Dr. Diao has been managing and supporting a portfolio of research projects in the area of power system modeling, dynamic simulation, online security assessment and control, dynamic state estimation, integration of renewable energy, and HPC implementation in power grid studies. He has published more than 45 peer reviewed journal and conference papers, as well as dozens of technical reports. He also serves as a reviewer of journals in the area of power systems, including IEEE Transactions on Power Systems, IEEE Transactions on Smart Grid, IEEE Transactions on Sustainable Energy, etc. Dr. Diao is now a registered Professional Engineer (PE) in Washington State and a senior member of IEEE.

Ruisheng Diao Headshot
Ruisheng Diao
Pacific Northwest National Lab (PNNL)
EEB 105
17 May 2016, 10:30am until 11:30am