Results 51 to 60 of about 9,774 (207)

Enhancing Offshore Wind Utilization by Embedding Neural Surrogates of Total Transfer Capability in Security‐Constrained Dispatch

open access: yesEngineering Reports, Volume 8, Issue 4, April 2026.
Graphical abstract of the proposed decision‐aware Neural TTC framework. AC‐secure TTC labels are first generated from spatio‐temporal operating conditions using CPF/RPF and N‐1 screening with thermal, voltage, and transient security checks. A compact ReLU neural surrogate then maps exogenous conditions and endogenous dispatch decisions to interface TTC,
Jianjun Hong   +7 more
wiley   +1 more source

Presolving convexified optimal power flow with mixtures of gradient experts

open access: yesEnergy and AI
Convex relaxations and approximations of the optimal power flow (OPF) problem have gained significant research and industrial interest for planning and operations in electric power networks. One approach for reducing their solve times is presolving which
Shourya Bose, Kejun Chen, Yu Zhang
doaj   +1 more source

Adaptive Hybrid Chance‐Constrained SOCP‐Based ACOPF for Coordinated Optimisation of Integrated Energy Systems

open access: yesIET Smart Energy Systems, Volume 2, Issue 1, Page 34-48, March 2026.
An adaptive chance‐constrained hybrid SOCP‐Based ACOPF for coordinated optimisation of integrated source–grid–load–storage systems is presented. The coordinated optimisation of integrated source–grid–load–storage (SGLS) systems is challenged by renewable energy uncertainty, complex industrial load characteristics and stringent policy constraints ...
Mingyue He   +6 more
wiley   +1 more source

Quadratically Constrained Quadratic Programming Formulation of Contingency Constrained Optimal Power Flow with Photovoltaic Generation

open access: yesEnergies, 2020
Contingency Constrained Optimal Power Flow (CCOPF) differs from traditional Optimal Power Flow (OPF) because its generation dispatch is planned to work with state variables between constraint limits, considering a specific contingency.
Luis M. Leon   +2 more
doaj   +1 more source

Optimal power flow of MT‐HVDC system connected large offshore wind farms using mixed‐integer semi‐definite programming approach

open access: yesIET Generation, Transmission & Distribution, 2021
Typically offshore wind farms are connected to the onshore AC grid networks using voltage source converter based MT‐HVDC networks. This article aims to formulating optimal power flow (OPF) problem of MT‐HVDC system connected large offshore wind farms ...
Nikhil Pathak, Zechun Hu
doaj   +1 more source

Non‐invasive cardiac power measurements in decompensated heart failure in elderly adults: A prospective proof‐of‐concept study

open access: yesPhysiological Reports, Volume 14, Issue 6, March 2026.
Abstract In this proof‐of‐concept study, we evaluated the feasibility of non‐invasive estimation of cardiac power metrics—total power, steady power, oscillatory power, and oscillatory power fraction—and compared the prognostic and diagnostic value with established echocardiographic metrics. We prospectively included 29 patients (mean age 76 ± 13 years,
Ingrid Yttervoll   +5 more
wiley   +1 more source

A Novel Optimization Algorithm Inspired by Egyptian Stray Dogs for Solving Multi-Objective Optimal Power Flow Problems

open access: yesApplied System Innovation
One of the most important issues that can significantly affect the electric power network’s ability to operate sustainably is the optimal power flow (OPF) problem.
Mohamed H. ElMessmary   +3 more
doaj   +1 more source

Moment-Based Relaxation of the Optimal Power Flow Problem

open access: yes, 2014
The optimal power flow (OPF) problem minimizes power system operating cost subject to both engineering and network constraints. With the potential to find global solutions, significant research interest has focused on convex relaxations of the non-convex
Hiskens, Ian A., Molzahn, Daniel K.
core   +1 more source

Lecture Notes on Optimal Power Flow (OPF)

open access: yes, 2018
These lecture notes cover the DC Optimal Power and AC Optimal Power Flow formulations, as well as the Economic Dispatch for Power Systems. Their aim is to supplement the study material for the course "31765: Optimization in modern power systems" at the Technical University of Denmark (DTU).
openaire   +2 more sources

Diagnostic analytics of electricity tariff design in Nepal

open access: yesEnergy Conversion and Economics, Volume 7, Issue 1, Page 50-68, February 2026.
Abstract Nepal's electricity sector operates under a monopsony, with government entities dominating generation, transmission, and distribution. This market structure suppresses competition, leading to inherent challenges in establishing fair and efficient electricity tariff systems.
Prashant Kandel   +2 more
wiley   +1 more source

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