Search results for " 14"
showing 10 items of 676 documents
Disturbing loads identification in power systems: a single-point time-domain method based on IEEE 1459-2000
2009
This paper presents a single-point method for the identification of prevailing disturbing loads in power systems for both single-phase and three-phase applications downstream or upstream from the metering section. It is based on the simultaneous measurement of three nonactive power quantities, which are based on the IEEE Std. 1459-2000 approach. The proposed method is only based on the separation of the fundamental components from the harmonic content of voltage and current; thus, it does not require any spectral analysis of the voltages and current. In this paper, the formulation of the proposed method and its time-domain implementation are described; moreover, some simulation results are …
Comparison of two different approaches for harmonic distortion sources assessment
2021
The paper focuses the attention on the comparison of two approaches for power quality assessment in the electric grid. Both approaches are suitable for investigating the harmonic pollution source and discovering if the harmonic source comes from the customer or the utility grid. The two approaches have the same purpose but they are deeply different. The first approach is based on the knowledge of the customer and utility equivalent impedance while the second is based on single point measurement at point of common coupling PCC. In this paper, the advantages and drawbacks of the two approaches are investigated also supported by a case study.
Da poeta a poeta, da traduttore a traduttore: il carteggio tra Umberto Saba e Tomàs Garcés
2015
Riassunto: Il rapporto personale tra Umberto Saba e Tomàs Garcés cominciò agli inizi degli anni Trenta e si interruppe poco prima della guerra civile spagnola. Quest’articolo analizza ed edita per la prima volta tutte le lettere scritte da Saba al poeta catalano che sono state conservate presso l’archivio della famiglia Garcés. Parole chiave: poesia, traduzione, Umberto Saba, Tomàs Garcés Abstract: The personal relationship between Umberto Saba and Tomàs Garcés began in the early thirties and stopped just before the Spanish Civil War. This article analyses and edits for the first time all the letters written by Saba to the Catalan poet that have been preserved in the archives of f…
Caeruleus: significado cromático en la poesía latina del s. I a.C.
2020
En este artículo se estudia el color azul a través de su significante caeruleus y su familia léxica en los poetas latinos del s. I a.C. y, especialmente, en la Eneida, poema en el que adquiere una especial relevancia. Se analiza su etimología, significado y valores; su relación con ?????? del que constituye una traducción. Se concluye que los poetas latinos usan este radical especialmente para el mar y las aguas (ríos, fuentes, tormentas), el cielo o el mundo vegetal, un uso ausente en Homero e infrecuente en la poesía griega.