Results 21 to 30 of about 3,300 (231)

Optimal Operation of Soft Open Points-Based Energy Storage in Active Distribution Networks by Considering the Battery Lifetime

open access: yesFrontiers in Energy Research, 2021
Soft open point-based energy storage (SOP-based ES) can transfer power in time and space and also regulate reactive power. These characteristics help promote the integration of distributed generations (DGs) and reduce the operating cost of active ...
Jian Wang   +3 more
doaj   +1 more source

A comparison between MILP and MINLP approaches to optimal solution of Nonlinear Discrete Transportation Problem

open access: yesTransport, 2015
Finding an exact optimal solution of the Nonlinear Discrete Transportation Problem (NDTP) represents a challenging task in transportation science. Development of an adequate model formulation and selection of an appropriate optimization method are thus ...
Uroš Klanšek
doaj   +1 more source

Exact minimization of the energy losses and the CO2 emissions in isolated DC distribution networks using PV sources

open access: yesDyna, 2021
This paper addresses the optimal location and sizing of photovoltaic (PV) sources in isolated direct current (DC) electrical networks, considering time-varying load and renewable generation curves.
Alexander Molina   +2 more
doaj   +1 more source

50 years of mixed-integer nonlinear and disjunctive programming

open access: yesEuropean Journal of Operational Research
Jan Kronqvist   +2 more
exaly   +2 more sources

Undecidability and hardness in mixed-integer nonlinear programming [PDF]

open access: yesRAIRO - Operations Research, 2019
We survey two aspects of mixed-integer nonlinear programming which have attracted less attention (so far) than solution methods, solvers and applications: namely, whether the class of these problems can be solved algorithmically, and, for the subclasses which can, whether they are hard to solve.
openaire   +2 more sources

Dynamic Coordinated Active–Reactive Power Optimization for Active Distribution Network with Energy Storage Systems

open access: yesApplied Sciences, 2019
This paper proposes a coordinated active–reactive power optimization model for an active distribution network with energy storage systems, where the active and reactive resources are handled simultaneously.
Lingling Wang   +4 more
doaj   +1 more source

Optimal Biocompatible Solvent Design by Mixed-integer Hybrid Differential Evolution [PDF]

open access: yesBioautomation, 2008
In this study, a flexible optimization approach is introduced to design an optimal biocompatible solvent for an extractive fermentation process with cell-recycling.
Hou-Chieh Cheng, Feng-Sheng Wang
doaj  

Optimal Configuration of Gas Solid Separation Equipment Using Mixed Integer Nonlinear Programming

open access: yesAtmosphere, 2022
The separation of solid particles from gas-solid process streams is an important unit operation in many chemical processes. Out of the many different types of separation equipment that are used for gas-solid separation, cyclone separators are widely used
Muhamad Fariz Failaka   +4 more
doaj   +1 more source

Multi-objective optimization of biomass to biomethane system

open access: yesGreen Energy & Environment, 2016
The superstructure optimization of biomass to biomethane system through digestion is conducted in this work. The system encompasses biofeedstock collection and transportation, anaerobic digestion, biogas upgrading, and digestate recycling.
Nana Yan   +5 more
doaj   +1 more source

Global optimization of mixed-integer nonlinear programs with SCIP 8

open access: yesJournal of Global Optimization, 2023
Abstract For over 10 years, the constraint integer programming framework SCIP has been extended by capabilities for the solution of convex and nonconvex mixed-integer nonlinear programs (MINLPs). With the recently published version 8.0, these capabilities have been largely reworked and extended. This paper discusses the motivations for recent
Ksenia Bestuzheva   +5 more
openaire   +5 more sources

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