Search results for " GRID"
showing 8 items of 358 documents
A PC-based instrument for automatic monitoring and control of a CPVT power plant
2014
A PC-based instrument has been developed for the monitoring and control of a concentrated photovoltaic and thermal (CPVT) power plant. The instrument allows acquiring both electrical and thermal quantities. Moreover it implements the solar tracking algorithm used to optimize the power production.
Sistemi di comunicazione e dispositivi di interfaccia per l'integrazione della generazione distribuita nelle smart grids
2014
L'integrazione della generazione distribuita (GD) nelle reti elettriche di distribuzione a media e bassa tensione uno degli elementi chiave per il pieno sfruttamento delle fonti energetiche rinnovabili (FER). Ci implica un ripensamento della gestione e del controllo delle reti elettriche , che devono passare da sistemi " passivi ", con flussi di potenza unidirezionali e un numero limitato di funzioni di monitoraggio e automazione, a reti attive e intelligenti (Òsmart gridsÒ). In tali sistemi, i flussi di potenza possono essere bi-direzionali e, se non correttamente gestiti, possono causare situazioni critiche, quali ad es. problemi di stabilit e di controllo della rete o funzionamento i…
« Présentation d'un outil d'évaluation de l'évolution des processus psychiques au sein d'un dispositif thérapeutique en clinique du traumatisme »
2022
Objectives: Our project consists in the implementation and the evaluation of a care system for children in a child protection NGO in Cambodia. In view of the cultural differences and specificities of the field, taking into account only the symptoms does not seem to sufficiently account for the processes involved within the system. Based on the observation that there is a lack of tools that would allow us to apprehend these processes, our study focused on the creation of a scoring grid for psychological processes that could be used in the humanitarian field and could support clinical practice. Method: During one year, we met ten children confronted with traumatogenic events, within a device …
Exergoeconomics as a Cost-Accounting Method in Thermal Grids with the Presence of Renewable Energy Producers
2022
Thermal grids are efficient, reliable, and sustainable technologies for satisfying the thermal demands of buildings. The capability to operate at a low temperature allows not only for the integration of heat produced by renewable energy sources but also for the storage of surplus electricity from the grid via “power to heat” technologies. Besides, in the future, heat consumers are expected to behave increasingly as “prosumers”, supplying in some periods heat produced by renewable energy plants on site. In this scenario, it is important to propose a method for the cost allocation among producers connected to the grid. In this regard, this paper proposes Exergoeconomic…
IEA EBC Annex83 Positive Energy Districts
2021
At a global level, the need for energy efficiency and an increased share of renewable energy sources is evident, as is the crucial role of cities due to the rapid urbanization rate. As a consequence of this, the research work related to Positive Energy Districts (PED) has accelerated in recent years. A common shared definition, as well as technological approaches or methodological issues related to PEDs are still unclear in this development and a global scientific discussion is needed. The International Energy Agency’s Energy in Buildings and Communities Programme (IEA EBC) Annex 83 is the main platform for this international scientific debate and research. This paper describes the challeng…
Lo strappo al mos maiorum
2021
Following Doxiadis in his idea of mos maiorum linking eye and hand the essay deals with citizens' action in remembering. This is the opposite of Villa Adriana's paradigm. The focus is in the opposition between the ecleticism of Villa Adrina and th eregularuty of Ippodamus grid.
Decoupled control scheme of grid-connected split-source inverters
2017
Grid-connected power conversion systems for renewable energy sources must fulfill several requirements, e.g., the high efficiency, the reduced cost and complexity, and, quite often, the boost capabilities that is usually achieved using a front-end dc–dc boost converter before the inversion stage, leading to a two-stage architecture. Meanwhile, single-stage power conversion systems, which perform the boosting operation within the inversion one, offer some potential advantages, in terms of reducing the complexity and the volume of the whole system. Among several proposed options, the split-source inverter (SSI) has been recently proposed by Abdelhakim et al. as an alternative option with some…
Social media in public diplomacy : survey on the social media communication of the Finnish missions abroad
2012
Today, social media is changing the way people communicate by giving the influence to the hands of the people. For organizations, it means that the issues of stakeholders are the focus of the communication, not the organizations. The question no longer is whether to use social media in public relations, but how to use it. In this research the social media communication of the Finnish missions abroad is studied. The missions have implemented social media as a part of their communication mainly since 2010. It is time to evaluate how the social media have been used so far, including an examination of what more social media can offer. It has been suggested that there is a need for re-evaluation…