Algebraic graph theory is a cornerstone in the study of electrical networks ranging from
miniature integrated circuits to continental-scale power systems. Conversely, many …

This paper presents a reformulation of the power flow problem in low-voltage dc (LVDC)
power grids via Taylor's series expansion. The solution of the original nonlinear quadratic …

This study analyzes the numerical convergence and processing time required by several
classical and new solution methods proposed in the literature to solve the power-flow …

This brief addresses the numerical approximation of the maximum power consumption in
direct-current microgrids (DC-MGs) with constant power loads through a convex optimizing …

This paper addresses the optimal power flow (OPF) problem in direct current (DC) power
grids via a hybrid Gauss-Seidel-Genetic-Algorithm methodology through a master-slave …

This express brief presents a mixed-integer quadratic programming (MIQP) model to
address the problem of optimal pole-swapping in asymmetric bipolar DC networks. The …

We study a type of port-Hamiltonian system in which the controller or disturbance is not
applied to the flow variables, but to the systems power balance equation—a scenario that …

This paper proposes a voltage stability index (VSI) suitable for unbalanced polyphase power
systems. To this end, the grid is represented by a polyphase multiport network model (ie …

In an intermediate bus architecture (IBA), a buck converter, while driving a constant power
load (CPL), exhibits unstable poles in its control-to-output transfer function. This may result …

This express brief addresses the voltage collapse problem in direct-current (dc) networks by
using a recursive heuristic search algorithm based on the Newton-Raphson method. The …