Results 21 to 30 of about 1,055 (161)

Dual Provision and Training Models. A Pending Task for the Case of Professional Technical Secondary Education in Chile

open access: yesSaberes Educativos, 2020
In Chile, professional technical secondary education (EMPT in Spanish), in its essence and objective, ensures that its students achieve early entry into the labor market based on solid competences, skills, abilities and knowledge, also contributing to ...
Christian Loyola-Bustos
doaj   +1 more source

Research on VFTO Identification of GIS Based on Wavelet Transform and Singular Value Decomposition

open access: yesEnergies, 2022
The accurate identification of Very Fast Transient Overvoltage (VFTO) is the key of overvoltage control in modern smart grids. In order to accurately identify VFTO generated by the operation of a disconnector in Gas Insulated Substation (GIS), a VFTO ...
Gang Xiao   +7 more
doaj   +1 more source

Comparative study of 220 kV overhead transmission lines models subjected to lightning strike simulation by using electromagnetic and alternative transients program

open access: yesElectrical engineering & Electromechanics, 2022
Introduction. In high voltage networks intended for the transport of electrical energy, lightning can strike an electric line striking either a phase conductor, a pylon or a ground wire, causing significant overvoltage on the transmission lines ...
S. Boumous   +3 more
doaj   +1 more source

Integrated Analysis Reveals Functional Ingredients Biosynthesis and Regulatory Mechanisms in Elaeagnus mollis Diels Leaf

open access: yesFood Science &Nutrition, Volume 14, Issue 3, March 2026.
The content of functional ingredient fluctuated in E. mollis leaf. The functional ingredients biosynthesis pathways were revealed. EmNAC014 and EmMYB15 played key roles in functional ingredients biosynthesis. ABSTRACT Elaeagnus mollis Diels is a newly developed woody oil crop, and the biosynthesis and regulatory mechanism underlying functional and ...
Hu Xiaoyan   +8 more
wiley   +1 more source

¿Es relevante la educación media técnico-profesional?

open access: yesPersona y Sociedad, 2009
La Educación Media Técnico-Profesional (EMTP) del país ha sido recientemente objeto de una mirada crítica a raíz de una serie de problemas en sus condiciones de funcionamiento.
Iván Ortiz
doaj   +1 more source

Busbar Fault Direction Identification Using Sequences of Displacement Vectors

open access: yesEngineering Reports, Volume 8, Issue 2, February 2026.
In this paper, a novel busbar fault direction identification scheme is presented. The proposed scheme is based on sequences of displacement vectors. The proposed algorithm is fast and simple enough to be embedded in a differential relay to assist the percentage‐restraint differential algorithm.
Mostafa Sarlak
wiley   +1 more source

Modelling of Secondary Arc Using EMTP-RV [PDF]

open access: yesThe Transactions of The Korean Institute of Electrical Engineers, 2012
Most of faults occurred in transmission lines are single-phase to ground faults and transient faults. Single-phase auto reclosing is an appropriate scheme to maintain the system stability and restore the system effectively when those faults are occurred.
Yun-Sik Oh   +3 more
openaire   +1 more source

Advanced Clustering and Optimisation Techniques for Adaptive Protection in AC Microgrids With Hardware‐in‐the‐Loop Testing

open access: yesEnergy Science &Engineering, Volume 14, Issue 1, Page 377-398, January 2026.
Standard and proposed non‐standard OCR characteristics. ABSTRACT This study introduces an advanced adaptive protection approach for AC power systems, designed to address key limitations in current clustering‐based relay coordination methods. Using K‐means, hierarchical, and spectral clustering techniques, the proposed scheme classifies grid operating ...
Feras Alasali   +6 more
wiley   +1 more source

Liderazgo de Directoras en EMTP y la Promoción de la Perspectiva de Género en contextos Masculinizados

open access: yesInternational Journal of Educational Leadership and Management
El liderazgo de directores/as de establecimientos EMTP tiene múltiples desafíos de gestión, tanto desde lo administrativo como lo pedagógico, pues deben responder a las demandas del ámbito laboral y social.
Andrea Carrasco-Sáez   +1 more
doaj   +1 more source

Evaluation of Filtered Spark Gap on the Lightning Protection of Distribution Transformers: Experimental and Simulation Study

open access: yesEnergies, 2020
Protection of transformers, as one of the most expensive equipment in the power system, against lightning overvoltage impulses is a vital task. This paper, for the first time so far, investigates the effects of a filtered spark gap on the protection ...
Mahdi Pourakbari-Kasmaei   +6 more
doaj   +1 more source

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