Search results for " rene."
showing 10 items of 258 documents
FROM FUEL BASED GENERATION TO SMART RENEWABLE GENERATION: PRELIMINARY DESIGN FOR AN ISLANDED SYSTEM. PART I: TECHNICAL ISSUES AND FUTURE SCENARIOS
2011
The subject addressed in this paper is the analytical study of the transition of the energy generation system for a real MV/LV distribution system from a ‘fuel based’ one to a distributed and smart ‘renewables based’ one. The paper outlines the technical issues related to such transition from one type of system to the other. The study is carried out for a real islanded MV/LV distribution network located in the Island of Pantelleria. The economical issues regarding the above transition are focused in a companion paper.
CO2 reduction exploiting RES for EV charging
2017
The world is facing an urgent need to reduce emissions, limiting pollution for a better quality of life. This objective has to be reached by all cities and governments worldwide. This paper focuses on the field of transportation, which is greatly responsible for air pollution, mainly in cities and urban areas such as towns, airports and seaports. The diffusion of electric vehicles (EVs) enables a significant reduction of air pollutants emitted by combustion engines; however, their recharge can affect the total pollution by their increasing energy demand. A solution is the use of Renewable Energy Sources (RES) to charge EVs. This paper analyzes the feasibility of integrating EVs and RES, foc…
Benefit at Grid Level by Using DoS Actions via Combined Photovoltaic and Solar Panel System
2010
AN ACCURATE MODEL FOR STEADY-STATE AND DYNAMIC ANALYSIS OF THE SICILIAN NETWORK WITH HVDC INTERCONNECTIONS
2021
Sicily is one of the first Italian regions for installed power from renewable energy plants, especially photovoltaic and wind plants, and a crucial point for the Mediterranean energy hub. Its role as nexus between the European and the African Continents is becoming more and more significant due to the realization in a short time of the so called Tyrrhenian link and the High Voltage Direct Current (HVDC) connection with Tunisia. In this framework, the paper presents a model of the Sicily power generation and transmission system, including the Tyrrhenian link and two equivalent buses representing the Sardinian power network and the rest of the Continental Europe (CE) synchronous area, for both …
A Simulation Study for Assessing the Minimum Number of V2G Recharge Points in Favignana
2022
Issues related to the stability of non-interconnected grids are of high relevance given the increasing presence of renewable sources in the power generation system. In order to ensure adequate levels of system's reliability, it is necessary to find new methods to ensure the stability of the electric grid. The present work proposes a methodology for the definition of the minimum number of Vehicle-to-Grid (V2G) charging points that would allow the integration of 1 MW of photovoltaic power in the power grid of the Italian island of Favignana, electrically disconnected from the continental grid. Primary frequency regulation simulations are carried out in Matlab/Simulink environment for differen…
A Reinforcement Learning Approach for User Preference-aware Energy Sharing Systems
2021
Energy Sharing Systems (ESS) are envisioned to be the future of power systems. In these systems, consumers equipped with renewable energy generation capabilities are able to participate in an energy market to sell their energy. This paper proposes an ESS that, differently from previous works, takes into account the consumers’ preference, engagement, and bounded rationality. The problem of maximizing the energy exchange while considering such user modeling is formulated and shown to be NP-Hard. To learn the user behavior, two heuristics are proposed: 1) a Reinforcement Learning-based algorithm, which provides a bounded regret and 2) a more computationally efficient heuristic, named BPT- ${K}…
La calcolosi urinaria dagli albori della civiltà alle soglie del nostro tempo.
2003
PROFILASSI UNIVERSALE CONTRO IL CITOMEGALOVIRUS CON VALGANCICLOVIR NEI SOGGETTI RICEVENTI TRAPIANTO DI RENE
2009
Introduzione: In questo studio descriviamo l’incidenza di infezione da citomegalovirus (CMV) e della malattia da CMV dopo profilassi universale contro il CMV con valganciclovir orale in un gruppo di pazienti riceventi trapianto di rene trattati in differenti studi clinici randomizzato con un potente regime immunosoppressivo. Metodi: Da Maggio 2000 a Ottobre 2008, 622 riceventi (R) il primo trapianto di rene da donatore (D) vivente e cadavere furono randomizzato in differenti protocolli. Questo report descrive in dettaglio l’incidenza dell’infezione e della malattia da CMV. Tutti i pazienti furono trattati con ganciclovir® endovenoso per 3 giorni, seguito dalla somministrazione orale quotidi…
INCIDENZA DEL DIABETE MELLITO TIPO 2 DOPO TRAPIANTO COMBINATO RENE-PANCREAS
2009
Introduzione: Scopo di questo studio è determinare il tasso di incidenza del diabete mellito (DM) tipo 2 dopo trapianto combinato di rene-pancreas (SPK). Materiali e metodi: da Settembre 2000 a Gennaio 2008, è stato eseguito uno studio randomizzato a lungo termine, prospettico, in un singolo centro su 164 riceventi di SPK con drenaggio endocrino sistemico ed esocrino vescicale, comparando la rapamicina (Gruppo A, n=82) vs micofenolato mofetile (Gruppo B, n=82). La terapia all’induzione incluse in entrambi i gruppi l’uso di daclizumab (1mg/kg, 2 dosi) e timoglobulina (1mg/kg, 5 dosi). La terapia immunosoppressiva di mantenimento in entrambi i gruppi incluse inoltre tacrolimus e corticosteroi…
LO STENT INTERNO-ESTERNO COME STRUMENTO DIAGNOSTICO PER L’IDENTIFICAZIONE PRECOCE DELLA GLOMERULOSCLEROSI FOCALE SEGMENTALE NEI RICEVENTI IL TRAPIANT…
2009
Introduzione: La glomerulosclerosi focale segmentale (GSFS) è una delle più frequenti malattie glomerualri ricorrenti dopo trapianto renale (15-100%). Questo studio valuta l’utilità dello stent interno-esterno come mezzo diagnostico per monitorare la proteinuria dopo trapianto di rene nei pazienti con FSGS presso il nostro centro. Materiali e metodi: E’ stata effettuata un’analisi retrospettiva di 11 riceventi di trapianto di rene (7 da donatore viventi consanguinei, 4 da donatore cadavere) tra il 2000 e il 2008 con FSGS comprovata dalla biopsia che sono stati sottoposti al posizionamento di stent interno-esterno intraoperatorio. Tutti i pazienti ebbero una diuresi ≥ 500 ml. Un sondino da n…