Results 11 to 20 of about 313,124 (170)

A new methodology for the analysis and optimal setting of directional polarisation methods for overcurrent elements in line protection applications

open access: yesIET Generation, Transmission & Distribution, 2022
Directional protection of transmission lines is an important feature in situations where short‐circuit direction must be correctly detected. The proper operation of this protection is highly dependent on phasor comparison techniques called polarisation ...
Sebastián Vaca   +3 more
doaj   +2 more sources

Coalition cascades: The politics of tipping points in clean energy transitions

open access: yesPolicy Studies Journal, Volume 51, Issue 4, Page 715-739, November 2023., 2023
Abstract Policy change often involves multiple policy subsystems, as in the case of clean energy transitions. We argue that trans‐subsystem policy feedback is a central dynamic in policy change across subsystems. Policy in one subsystem creates benefits/costs and/or learning effects that mobilize actors for policy change in another subsystem, resulting
Jonas Meckling, Nicholas Goedeking
wiley   +1 more source

Methodology for scheduling long‐term replacement of aging power transformers, considering risk

open access: yesIET Generation, Transmission &Distribution, Volume 17, Issue 16, Page 3571-3581, August 2023., 2023
This paper presents a useful methodology for deciding the replacement priority of risky assets in a large power transformer fleet. The solution is based on the minimization of the risk of the power transformer fleet to be renovated. The transformer risk index is calculated from the estimation of the life used and the strategic importance of each unit ...
Andrés Felipe Cerón Piamba   +2 more
wiley   +1 more source

Crystal phase evolution of high temperature annealed Fe3O4‐CaO catalysts for biodiesel production

open access: yesBiofuels, Bioproducts and Biorefining, Volume 17, Issue 4, Page 843-858, July/August 2023., 2023
Abstract Biodiesel (BD) is an alternative transportation fuel that has been commercialized. Most CaO‐based heterogeneous catalysts that are applied for BD production become strongly deactivated after not more than five cycles of reuse. Predominantly CaO and Ca(OH)2 active phases in eggshell were mixed with Fe3O4 by ball milling for 3 h followed by ...
Jose Luis Aleman‐Ramirez   +5 more
wiley   +1 more source

Optimum frequency response with decentralized drivers in power system

open access: yesIET Generation, Transmission &Distribution, Volume 17, Issue 9, Page 1985-1998, May 2023., 2023
This document presents a novel methodology to optimize the power system frequency response based on the implementation of decentralized controllers. Abstract This document presents a novel methodology to optimize the power system frequency response based on the implementation of decentralized controllers.
Diego Maldonado   +4 more
wiley   +1 more source

Comparative study of continuous hourly energy consumption forecasting strategies with small data sets to support demand management decisions in buildings

open access: yesEnergy Science &Engineering, Volume 10, Issue 12, Page 4694-4707, December 2022., 2022
Electricity demand prediction method in Smart Buildings. Abstract Buildings are one of the largest consumers of electrical energy, making it important to develop different strategies to help to reduce electricity consumption. Building energy consumption forecasting strategies are widely used to support demand management decisions, but these strategies ...
D. Mariano‐Hernández   +8 more
wiley   +1 more source

Hotspots in the grid: Avian sensitivity and vulnerability to collision risk from energy infrastructure interactions in Europe and North Africa

open access: yesJournal of Applied Ecology, Volume 59, Issue 6, Page 1496-1512, June 2022., 2022
We identify the areas of Europe and North Africa that are most sensitive for the specific populations of birds for which sufficient GPS tracking data at high spatial resolution were available. We also map vulnerability hotspots where mitigation at existing EI should be prioritised to reduce collision risks.
Jethro G. Gauld   +50 more
wiley   +1 more source

Development of a novel neutron detection technique by using a boron layer coating a Charge Coupled Device [PDF]

open access: yes, 2015
This article describes the design features and the first test measurements obtained during the installation of a novel high resolution 2D neutron detection technique.
Blostein, Juan Jeronimo   +5 more
core   +1 more source

Impact of volcanic ash from Cotopaxi-2015 and Tungurahua-2016 eruptions on the dielectric characteristics of suspension insulators, Ecuador

open access: yesJournal of Applied Volcanology, 2022
In Ecuador, a country with several active volcanoes and with four eruptions in the last decade in the continental arc, it is very likely that high-voltage transmission lines cross volcanic hazard zones on their routes.
Juan Ramírez   +7 more
doaj   +1 more source

Análisis de un controlador adaptable con observador de estado por modos deslizantes para un modelo de tratamiento de diabetes tipo 1

open access: yesRevista Politécnica, 2020
El desarrollo del Páncreas Artificial, el cual consiste en la implementación de una bomba de infusión continua de insulina y de sensores para el monitoreo de glucosa en la sangre, es una prioridad para el tratamiento de personas con diabetes tipo 1. Para
María F. Villa-Tamayo   +3 more
doaj   +1 more source

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