Insulation system conditions in power transformers can be evaluated by means of partial discharge (PD) analyses. In fact, PD analysis is used to detect premature damage in transformer insulation system to avoid catastrophic ...

A new algorithm to partial discharges (PD) location in transformer windings by means of the discrete wavelets transform (DWT) and the Kullback-Leibler (KL) divergence is presented. When the insulation system of transformers ...

In this paper the authors look for a better understanding of the properties of the impedances of transformer windings. These impedances are very important for the calculation of the resonant behavior of transformers. The ...

The spatiotemporal variability of the wind power resource over Argentina and Uruguay is assessed based on the Modern-Era Retrospective Analysis for Research and Applications 2 (MERRA2) dataset. Hourly wind speeds were ...

We study periodic wind-tree models, billiards in the plane endowed with Z2-periodically located identical connected symmetric right-angled obstacles. We exhibit e ective asymptotic formulas for the number of periodic billiard ...

The connection of wind generation to distribution systems can cause power quality problems such as voltage sags and voltage fluctuations. The wind generation can also detrimentally affect the operational and control ...

The cost of electrical materials increasingly becomes more expensive because the inflation and the devaluation of the real against the dollar. It is important to review the costs of manufacturing equipment and the materials ...