A survey of relaxations and approximations of the power flow equations

DK Molzahn, IA Hiskens - Foundations and Trends® in …, 2019 - nowpublishers.com
The power flow equations relate the power injections and voltages in an electric power
system and are therefore key to many power system optimization and control problems …

Recent developments in security-constrained AC optimal power flow: Overview of challenge 1 in the ARPA-E grid optimization competition

I Aravena, DK Molzahn, S Zhang… - Operations …, 2023 - pubsonline.informs.org
The optimal power-flow problem is central to many tasks in the design and operation of
electric power grids. This problem seeks the minimum-cost operating point for an electric …

Low voltage distribution networks modeling and unbalanced (optimal) power flow: A comprehensive review

IA Ibrahim, MJ Hossain - IEEE Access, 2021 - ieeexplore.ieee.org
The rapid increase of distributed energy resources (DERs) installation at residential and
commercial levels can pose significant technical issues on the voltage levels and capacity of …

Data-driven transient stability assessment model considering network topology changes via mahalanobis kernel regression and ensemble learning

X Liu, X Zhang, L Chen, F Xu… - Journal of Modern Power …, 2020 - ieeexplore.ieee.org
Transient stability assessment (TSA) is of great importance in power system operation and
control. One of the usual tasks in TSA is to estimate the critical clearing time (CCT) of a given …

Sufficient conditions for robust frequency stability of AC power systems

E Alves, G Bergna-Diaz, D Brandao… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
This paper analyses the frequency stability of ac grids in the presence of non-dispatchable
generation and stochastic loads. Its main goal is to evaluate conditions in which the system …

Sizing of hybrid energy storage systems for inertial and primary frequency control

EF Alves, DS Mota, E Tedeschi - Frontiers in Energy Research, 2021 - frontiersin.org
The exponential rise of renewable energy sources and microgrids brings about the
challenge of guaranteeing frequency stability in low-inertia grids through the use of energy …

Stability improvement of a transmission grid with high share of renewable energy using TSCOPF and inertia emulation

F Arredondo, P Ledesma… - … on Power Systems, 2020 - ieeexplore.ieee.org
This paper proposes a Transient Stability Constrained Optimal Power Flow (TSCOPF)
formulation that models non-synchronous renewable generation equipped with synthetic …

Transient stable corrective control using neural lyapunov learning

F Bellizio, JL Cremer, G Strbac - IEEE Transactions on Power …, 2022 - ieeexplore.ieee.org
This paper proposes a method to compute corrective control actions for dynamic security in
real-time and quantifies the economic value of corrective control. Lowered inertia requires …

A heuristic benders-decomposition-based algorithm for transient stability constrained optimal power flow

H Saberi, T Amraee, C Zhang, ZY Dong - Electric Power Systems Research, 2020 - Elsevier
Abstract Security Constrained Optimal Power Flow (SCOPF) is traditionally performed to
obtain the optimal generation levels to achieve the minimum generation cost under …

Resilient microgrid scheduling with secure frequency and voltage transient response

AM Nakiganda, P Aristidou - IEEE Transactions on Power …, 2022 - ieeexplore.ieee.org
The resilient operation of microgrids (MGs) relies strongly on their ability to operate in
islanded mode, autonomously from the bulk grid, whilst adhering to secure operation …