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Modelling of the influence of the layer pollution thickness in high voltage polluted insulators
(1995-12-01)
An experimental model and a mathematical model with the introduction of a ramp in the channel of Obenaus model are presented. The aim is to present a better reproduction of the real layer pollution deposited on the HV ...
Coupling rate measurement of a novel multi-actuated piezoelectric device using optical interferometry
(2010-12-01)
The class of piezoelectric actuators considered in this paper consists of a multi-flexible structure actuated by two or more piezoceramic devices that must generate different output displacements and forces at different ...
Flashover phenomenon: an analysis with influence of the thickness of the layer pollution of the high voltage polluted insulators
(Institute of Electrical and Electronics Engineers (IEEE), 1994-12-01)
Results of the analysis of dynamic behavior of flashover phenomenon on the high voltage-polluted insulators are presented. These results were taken from a mathematical and an experimental model that introduce the variable ...
Partial Discharge Detection of Transformer Bushing Based on Acoustic Emission and Current Analysis
(2021-08-05)
Partial discharge (PD) detection is one of the most important parameters which can classify the insulation condition of the distribution and power transformers. Among several components, the transformer bushing is an ...
A MILP Model for Optimal Charging Coordination of Storage Devices and Electric Vehicles Considering V2G Technology
(Ieee, 2015-01-01)
In this work, a MILP formulation is proposed to solve the optimal charging coordination of electrical vehicles (EVs) and storage devices (SDs) in electrical distribution systems (EDS). EVs with vehicle-to-grid (V2G) ...
A MILP model for optimal charging coordination of storage devices and electric vehicles considering V2G technology
(2015-01-01)
In this work, a MILP formulation is proposed to solve the optimal charging coordination of electrical vehicles (EVs) and storage devices (SDs) in electrical distribution systems (EDS). EVs with vehicle-to-grid (V2G) ...
Reliability evaluation of power transformers using partial discharge testing and measurement of low molecular mass acids in insulating oil
(2014-11-10)
The transformer is a fundamental part in electrical power systems. This equipment represents high cost and requires greater attention during maintenance activities. To avoid interruptions, it is important to evaluate the ...
Spinning reserve opportunity cost in hydroelectric plants
(2005-10-31)
Starting from the deregulated process of the Electric Sector, there was the need to attribute responsibilities to several agents and to elaborate appropriate forms of remuneration of the services rendered by the same. One ...
Dynamic analysis of flashover in high voltage DC polluted insulator
(1992-01-01)
The actual voltage growing in electrical power systems make the insulation studies, very important. In this, one of the principal problems is the development of discharges in surface polluted high tension insulators. Under ...
Preliminary characterization of a Plasma Focus device used as pulsed ion implanter
(2015)
Focus device on a cost effective basis. High energy ion beam emission is one, among several others, of the very interesting transient plasmas phenomena observed in plasma focus discharge. In the last decade the plasma focus ...