Results 101 to 110 of about 9,774 (207)

Physics-Informed Neural Networks for Power Systems Warm-Start Optimization

IEEE Access
Several studies have demonstrated the potential of machine learning methods to solve optimal power flow problems. However, designing a scalable physics-informed neural network (PINN) model that can improve its performance being trained in diverse ...
Alex Tudoras-Miravet, Esteban Gonzalez-Iakl, Oriol Gomis-Bellmunt, Eduardo Prieto-Araujo   +3 more
doaj   +1 more source

A Solution to the Optimal Power Flow Problem Considering WT and PV Generation

IEEE Access, 2019
This paper proposes a combination of phasor particle swarm optimization (PPSO) and a gravitational search algorithm, namely a hybrid PPSOGSA algorithm, for optimal power flow (OPF) in power systems with an integrated wind turbine (WT) and solar ...
Zia Ullah, Shaorong Wang, Jordan Radosavljevic, Jinmu Lai   +3 more
doaj   +1 more source

Convexification of Hybrid AC-DC Optimal Power Flow with Line-Commutated Converters

CSEE Journal of Power and Energy Systems
Line-commutated converter (LCC)-based high-voltage DC (HVDC) systems have been integrated with bulk AC power grids for interregional transmission of renewable power.
Hongyuan Liang, Zhigang Li, J. H. Zheng, Q. H. Wu   +3 more
doaj   +1 more source

A multiple choice relaxation model to solve the AC optimal power flow

International Journal of Electrical Power & Energy Systems
Mathematically speaking, AC optimal power flow (OPF), seeking an optimal state of a power system, is an NP-hard nonconvex optimization problem. In the past two decades, many researchers have attempted to accurately solve the AC OPF problem, that is ...
Fatemeh Zadehmohammadi, Hossein Sharifzadeh   +1 more
doaj   +1 more source

Enhanced AC/DC optimal power flow via nested distributed optimization for AC/VSC-MTDC hybrid power systems

International Journal of Electrical Power & Energy Systems
The deployment of voltage source converters (VSC) to facilitate flexible interconnections between the AC grid, renewable energy system (RES) and Multi-terminal DC (MTDC) grid is on the rise. However, significant challenges exist in exploiting coordinated
Haixiao Li, Pedro P. Vergara, Robert Dimitrovski, Hongjin Du, Aleksandra Lekić   +4 more
doaj   +1 more source

GAT‐OPF: Robust and Scalable Topology Analysis in AC Optimal Power Flow With Graph Attention Networks

IET Generation, Transmission & Distribution
ABSTRACT As power systems rapidly grow in scale and complexity, existing data‐driven methods are limited when applied to large‐scale networks due to issues with low prediction accuracy and constraint violations. This paper proposes an innovative hybrid framework, GAT‐OPF, which, for the first time, combines graph attention networks ...
Jiale Zhang, Xiaoqing Bai, Peijie Li, Zonglong Weng   +3 more
openaire   +1 more source

Implementation and Analysis of Genetic Algorithms (GA) to the Optimal Power Flow (OPF) Problem

, 2018
Recently, there is an increasing need for Optimal Power Flow (OPF) to solve problems of today’s deregulated power systems and the unsolved problems in the vertically integrated power systems. The most important aspects related to OPF are the solution methodologies, and the application areas.
openaire   +1 more source

GAT-ADNet: Leveraging Graph Attention Network for Optimal Power Flow in Active Distribution Network With High Renewables

IEEE Access
The high penetration of renewables into the active distribution network (ADN) brings voltage deviation and difficulties to the optimal power flow (OPF) problem.
Dinesh Kumar Mahto, Mahipal Bukya, Rajesh Kumar, Akhilesh Mathur, Vikash Kumar Saini   +4 more
doaj   +1 more source

Real-Time Testing Optimal Power Flow in Smart-Transformer-Based Meshed Hybrid Microgrids: Design and Validation

Energies
The smart transformer (ST) is a multiport and multi-stage converter that allows for the formation of meshed hybrid microgrids (MHMs) by enabling AC-DC ports in medium and low voltage.
Rafael A. Núñez-Rodríguez, Clodomiro Unsihuay-Vila, Johnny Posada, Omar Pinzón-Ardila, Alexandre Rasi Aoki, Rodrigo Bueno-Otto   +5 more
doaj   +1 more source

A PSO optimal power flow (OPF) method for autonomous power systems interconnected with HVDC technology

Presented on: Electric Power Components and ...
Συλλιγνακης Ιωαννης(http://users.isc.tuc.gr/~isyllignakis), Syllignakis Ioannis(http://users.isc.tuc.gr/~isyllignakis), Κανελλος Φωτιος(http://users.isc.tuc.gr/~fkanellos), Kanellos Fotios(http://users.isc.tuc.gr/~fkanellos)   +3 more
openaire   +1 more source