Back to activities
GERAD seminar

Applications of polynomial chaos expansion-based methods in power system probabilistic security assessments


Dec 8, 2021   11:00 AM — 12:00 PM

Xiaozhe Wang Assistant Professor, Department of Electrical and Computer Engineering, McGill University, Canada

Xiaozhe Wang

Présentation sur YouTube

The ever-increasing integration of renewable energy sources and new forms of load demand introduces a growing uncertainty level to power systems, which greatly affect various security properties of a system. In this talk, I will present some recent works of my group in utilizing polynomial chaos expansion (PCE)-based methods in power system probabilistic security assessments including probabilistic power flow solutions, available transfer capability assessments, and economic dispatch. In contrast to Monte Carlo-based simulations that require a large number of scenarios and model evaluations, the polynomial chaos expansion method can build a surrogate model for assessing the model response (e.g., probabilistic power flow solution) from a small number of scenarios and model evaluations, which thus saves huge computational efforts. I will also introduce the efforts to relax the assumption of knowing marginal distributions of random variables required in PCE. Insights for decision-making to reduce the negative impacts of uncertainty on power system security will also be discussed.

Peter E. Caines organizer
Olivier Bahn organizer


Online meeting
Montréal Québec

Research Axis

Research application