Results 21 to 30 of about 9,774 (207)

Optimal Power Flow with Power Flow Routers [PDF]

open access: yes, 2017
Power flow routing is an emerging control paradigm for the dynamic control of electric power flows. In this paper, we propose a generic model of a power flow router (PFR) and incorporate it into the optimal power flow (OPF) problem.
Lam, AYS, Leung, KC, Li, VOK, Lin, J
core   +1 more source

Interval optimal power flow applied to distribution networks under uncertainty of loads and renewable resources

open access: yesJournal of Modern Power Systems and Clean Energy, 2018
Optimal power flow (OPF) has been used for energy dispatching in active distribution networks. To satisfy constraints fully and achieve strict operational bounds under the uncertainties from loads and sources, this paper derives an interval optimal power
Pengwei CHEN, Xiangning XIAO, Xuhui WANG
doaj   +1 more source

Convex Relaxation of Optimal Power Flow, Part II: Exactness [PDF]

open access: yes, 2014
This tutorial summarizes recent advances in the convex relaxation of the optimal power flow (OPF) problem, focusing on structural properties rather than algorithms. Part I presents two power flow models, formulates OPF and their relaxations in each model,
Low, Steven H.
core   +5 more sources

Power Flow Optimization by Integrating Novel Metaheuristic Algorithms and Adopting Renewables to Improve Power System Operation

open access: yesApplied Sciences, 2022
The present study merges the teaching and learning algorithm (TLBO) and turbulent flow of water optimization (TFWO) to propose the hybrid TLTFWO. The main purpose is to provide optimal power flow (OPF) of the power network.
Mohana Alanazi   +3 more
doaj   +1 more source

Optimal Charging of Electric Vehicles in Smart Grid: Characterization and Valley-Filling Algorithms [PDF]

open access: yes, 2012
Electric vehicles (EVs) offer an attractive long-term solution to reduce the dependence on fossil fuel and greenhouse gas emission. However, a fleet of EVs with different EV battery charging rate constraints, that is distributed across a smart power grid
Chen, Niangjun   +2 more
core   +2 more sources

Exact Convex Relaxation of Optimal Power Flow in Radial Networks [PDF]

open access: yes, 2013
The optimal power flow (OPF) problem determines power generation/demand that minimize a certain objective such as generation cost or power loss. It is nonconvex.
Gan, Lingwen   +3 more
core   +4 more sources

Differential Privacy of Aggregated DC Optimal Power Flow Data [PDF]

open access: yes, 2019
We consider the problem of privately releasing aggregated network statistics obtained from solving a DC optimal power flow (OPF) problem. It is shown that the mechanism that determines the noise distribution parameters are linked to the topology of the ...
Anderson, James   +2 more
core   +2 more sources

A review on applications of heuristic optimization algorithms for optimal power flow in modern power systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2014
Optimal power flow (OPF) is one of the key tools for optimal operation and planning of modern power systems. Due to the high complexity with continuous and discrete control variables, modern heuristic optimization algorithms (HOAs) have been widely ...
Ming Niu, Can Wan, Zhao Xu
doaj   +1 more source

Optimal Power Flow Techniques under Characterization of Conventional and Renewable Energy Sources: A Comprehensive Analysis

open access: yesJournal of Engineering, 2017
The exhaustive knowledge of optimal power flow (OPF) methods is critical for proper system operation and planning, since OPF methods are utilized for finding the optimal state of any system under system constraint conditions, such as loss minimization ...
Baseem Khan, Pawan Singh
doaj   +1 more source

Graphical Models for Optimal Power Flow [PDF]

open access: yes, 2016
Optimal power flow (OPF) is the central optimization problem in electric power grids. Although solved routinely in the course of power grid operations, it is known to be strongly NP-hard in general, and weakly NP-hard over tree networks.
Chertkov, Michael   +4 more
core   +2 more sources

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