Results 11 to 20 of about 9,774 (207)

Convex Relaxation of Optimal Power Flow, Part I: Formulations and Equivalence [PDF]

open access: yesIEEE Transactions on Control of Network Systems, 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   +6 more sources

Design and tests of reinforcement-learning-based optimal power flow solution generator

open access: yesEnergy Reports, 2022
Optimal power flow (OPF) is a very traditional problem in the research field of power systems. In this paper, an OPF solution generator based on reinforcement learning (RL) is proposed. The solution process of OPF is modeled as a one-step Markov Decision
Hongyue Zhen   +7 more
doaj   +1 more source

A Progressive Period Optimal Power Flow for Systems with High Penetration of Variable Renewable Energy Sources

open access: yesEnergies, 2021
Renewable energy sources including wind farms and solar sites, have been rapidly integrated within power systems for economic and environmental reasons.
Zongjie Wang, C. Lindsay Anderson
doaj   +1 more source

Exact Distribution Optimal Power Flow (D-OPF) Model using Convex Iteration Technique [PDF]

open access: yes2019 IEEE Power & Energy Society General Meeting (PESGM), 2019
The distribution optimal power flow (D-OPF) models have gained attention in recent years to optimally operate acentrally-managed distribution grid. On account of nonconvex formulation that is difficult to solve, several relaxation methods have been proposed; the exactness of the solutions obtained from the relaxed models, however, remain a concern.
Jha, Rahul Ranjan, Dubey, Anamika
openaire   +2 more sources

Random-Fuzzy Chance-Constrained Programming Optimal Power Flow of Wind Integrated Power Considering Voltage Stability

open access: yesIEEE Access, 2020
Considering the random and fuzzy nature of wind speed, this paper proposes a multi-objective random-fuzzy chance-constrained programming optimal power flow (OPF) for wind integrated power systems.
Rui Ma   +4 more
doaj   +1 more source

Solution of Probabilistic Optimal Power Flow Incorporating Renewable Energy Uncertainty Using a Novel Circle Search Algorithm

open access: yesEnergies, 2022
Integrating renewable energy sources (RESs) into modern electric power systems offers various techno-economic benefits. However, the inconsistent power profile of RES influences the power flow of the entire distribution network, so it is crucial to ...
Mohamed A. M. Shaheen   +8 more
doaj   +1 more source

An Efficient Homotopy Method for Solving the Post-Contingency Optimal Power Flow to Global Optimality

open access: yesIEEE Access, 2022
Optimal power flow (OPF) is a fundamental problem in power systems analysis for determining the steady-state operating point of a power network that minimizes the generation cost.
Sangwoo Park   +3 more
doaj   +1 more source

Hybrid Imperialist Competitive and Grey Wolf Algorithm to Solve Multiobjective Optimal Power Flow with Wind and Solar Units

open access: yesEnergies, 2018
The optimal power flow (OPF) module optimizes the generation, transmission, and distribution of electric power without disrupting network power flow, operating limits, or constraints.
Jalel Ben Hmida   +3 more
doaj   +1 more source

Optimal Power Flow of Renewable-Integrated Power Systems Using a Gaussian Bare-Bones Levy-Flight Firefly Algorithm

open access: yesFrontiers in Energy Research, 2022
This article proposes a Gaussian bare-bones Levy-flight firefly algorithm (GBLFA) and its modified version named MGBLFA for optimizing the various kinds of the different optimal power flow (OPF) problems in the presence of conventional thermal power ...
Ali S. Alghamdi
doaj   +1 more source

Utilizing MATPOWER in Optimal Power Flow [PDF]

open access: yesModeling, Identification and Control, 2003
This paper shows how MATPOWER, a MATLAB Power System Simulation Package can be used for optimal power flow (OPF) simulations. MATPOWER is a package of MATLAB files for solving power flow and optimal power flow problems.
Tarjei Kristiansen
doaj   +1 more source

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