8 papers
Robust AC Optimal Power Flow with Robust Convex Restriction
Dongchan Lee, Konstantin Turitsyn, Daniel K. Molzahn +1
Electric power grids regularly experience uncertain fluctuations from load demands and renewables, which poses a risk of violating operational limits designed to safeguard the syst…
Robust Model Predictive Control for Nonlinear Systems Using Convex Restriction
Dongchan Lee, Konstantin Turitsyn, Jean-Jacques Slotine
We present an algorithm for robust model predictive control with consideration of uncertainty and safety constraints. Our framework considers a nonlinear dynamical system subject t…
Sequential Convex Restriction and its Applications in Robust Optimization
Dongchan Lee, Konstantin Turitsyn, Jean-Jacques Slotine
This paper presents a convex sufficient condition for solving a system of nonlinear equations under parametric changes and proposes a sequential convex optimization method for solv…
Feasible Path Identification in Optimal Power Flow with Sequential Convex Restriction
Dongchan Lee, Konstantin Turitsyn, Daniel K. Molzahn +1
Nonconvexity induced by the nonlinear AC power flow equations challenges solution algorithms for AC optimal power flow (OPF) problems. While significant research efforts have focus…
A Robustness Measure of Transient Stability under Operational Constraints in Power Systems
Liviu Aolaritei, Dongchan Lee, Thanh Long Vu +1
The aggressive integration of distributed renewable sources is changing the dynamics of the electric power grid in an unexpected manner. As a result, maintaining conventional perfo…
Convex Restriction of Power Flow Feasibility Sets
Dongchan Lee, Hung D. Nguyen, Krishnamurthy Dvijotham +1
The convex restriction of the power flow feasible sets identifies the convex subset of power injections where the solution for power flow is guaranteed to exist and satisfy the ope…