IEM Seminar Series
Industrial Engineering & Management in conjunction with the OSU INFORMS Student Chapter will be sponsoring a Seminar Series in the fall and spring semester. Various topics will be covered by faculty from the department. The series will be held on Wednesdays 3:30pm-5:00pm. Seminar topics, location and a short abstract and bio about the presenters will be available here as it becomes available.
Sponsored by IEM & OSU INFORMS Student Chapter
Date: Wednesday March 25th
Time: 3:30 – 5:00 pm
Location: Engineering North 316
Light refreshments will be provided.
New Formulations and Valid Inequalities for the Optimal Power Flow Problem
Abstract: The optimal power flow (OPF) problem is a nonconvex quadratically constrained continuous optimization problem that is the fundamental problem in the area of electrical power systems operations. The theme of our work is to design algorithmic techniques for finding globally optimal solutions of OPF. We begin by presenting a new formulation for the OPF problem. We prove that the McCormick relaxation of the classical (rectangular) formulation of the OPF is weaker than the McCormick relaxation of the new formulation. We present results on the quality of other relaxations such as a second order conic (SOCP) and semi-definite (SDP) relaxation of the new formulation. Then, we present a class of valid inequalities for OPF in the context of the new formulation. Finally, we present the extensive computational results to compare the performance of the new formulation and valid inequalities against the performance of the classical formulation.
Speaker Bio: Santanu S. Dey is an Associate Professor in the H. Milton Stewart School of Industrial and Systems Engineering at Georgia Institute of Technology. His research interests are in the area of non convex optimization, and in particular mixed integer linear and nonlinear programming. Dr. Dey holds a Ph.D. in Industrial Engineering from Purdue University. Prior to joining Georgia Tech, he worked as a post-doctoral fellow at the Center for Operations Research and Econometrics (CORE) of the Catholic University of Louvain in Belgium. He is the winner of George Nicholson first prize, IBM faculty award and NSF CAREER award.