Direction-aware resource discovery service in large-scale grid and cloud computing

2011 ◽  
Author(s):  
Wu-Chun Chung ◽  
Chin-Jung Hsu ◽  
Kuan-Chou Lai ◽  
Kuan-Ching Li ◽  
Yeh-Ching Chung
Keyword(s):  
Cloud Computing ◽  
Large Scale ◽  
Resource Discovery ◽  
Discovery Service ◽  
Large Scale Grid ◽  
Scale Grid

scholarly journals Self-adaptive structuring for P2P-based large-scale Grid environment

2016 ◽  
Vol Volume 25 - 2016 - Special... ◽  
Author(s):  
Bassirou Gueye ◽  
Olivier Flauzac ◽  
Cyril Rabat ◽  
Ibrahima Niang
Keyword(s):  
Large Scale ◽  
Virtual Communities ◽  
Resource Discovery ◽  
Nous Proposons ◽  
Grid Environment ◽  
Système D’Information ◽  
Large Scale Grid ◽  
Grid Nodes ◽  
Scale Grid ◽  
Self Adaptive

In this paper, we propose an extension and experimental evaluation of our self-adaptive structuring solution in an large-scale P2P Grid environment. The proposed specification, enables both services deployment, location and invocation of while respecting the P2P networks paradigm. Moreover, the specification is generic i.e. not linked to a particular P2P architecture. The increasing size of resources and users in large-scale distributed systems has lead to a scalability problem. To ensure the scalability, we propose to organize the P2P grid nodes in virtual communities. A particular node called ISP (Information System Proxy) acts as service directory within each cluster. On the other hand, resource discovery is one of the essential challenges in large-scale Grid environment. In this sense, we propose to build a spanning tree which will be constituted by the set of formed ISPs in order to allow an efficient service lookup in the system. An experimental validation, through simulation, shows that our approach ensures a high scalability in terms of clusters distribution and communication cost. Dans cet article, nous proposons une extension et une implémentation de notre solution de structuration auto-adaptative dans un environnement de grilles P2P à large échelle. La spécification que nous avons proposée permet aussi bien le déploiement, la recherche et l’invocation de services tout en respectant le paradigme des réseaux P2P. De plus, elle est générique, c’est-à-dire applicable sur toute architecture pair-à-pair. Pour garantir cette propriété, étant donné que les systèmes distribués à large échelle ont tendance à évoluer en termes de ressources, d’entités et d’utilisateurs, nous proposons de structurer l’environnement de grille pair-à-pair en communautés virtuelles. Au sein de chaque communauté un noeud appelé PSI (Proxys Système d’Information) joue le rôle de registre de services. Afin de permettre une recherche efficace dans le système, un arbre couvrant constitué uniquement des PSI est maintenu. Les résultats de simulations ont montrés que notre solution garantitun passage à l’échelle en termes de dimensionnement du réseau et aussi de coût de recherches.

scholarly journals Reliability Analysis and Repair Activity for the Components of 350 kW Inverters in a Large Scale Grid-Connected Photovoltaic System

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 564
Author(s):  
Filippo Spertino ◽  
Angela Amato ◽  
Gabriele Casali ◽  
Alessandro Ciocia ◽  
Gabriele Malgaroli
Keyword(s):  
Reliability Analysis ◽  
Large Scale ◽  
Photovoltaic System ◽  
Component Level ◽  
Ac Power ◽  
Repair Activity ◽  
Industrial Maintenance ◽  
Large Scale Grid ◽  
Ac Converters ◽  
Scale Grid

The reliability of photovoltaic (PV) generators is strongly affected by the performance of Direct Current/Alternating Current (DC/AC) converters, being the major source of PV underperformance. However, generally, their reliability is not investigated at component level: thus, the present work presents a reliability analysis and the repair activity for the components of full bridge DC/AC converters. In the first part of the paper, a reliability analysis using failure rates from literature is carried out for 132 inverters (AC rated power of 350 kW each) with global AC power of 46 MW in a large scale grid-connected PV plant. Then, in the second part of the work, results from literature are compared with data obtained by analyzing industrial maintenance reports in the years 2015–2017. In conclusion, the yearly energy losses involved in the downtime are quantified, as well as their availability.

scholarly journals Large-scale grid integration of residential thermal energy storages as demand-side flexibility resource: A review of international field studies

2019 ◽  
Vol 101 ◽  
pp. 527-547 ◽  
Author(s):  
Peter Kohlhepp ◽  
Hassan Harb ◽  
Henryk Wolisz ◽  
Simon Waczowicz ◽  
Dirk Müller ◽  
...  
Keyword(s):  
Thermal Energy ◽  
Large Scale ◽  
Field Studies ◽  
Grid Integration ◽  
Demand Side ◽  
Large Scale Grid ◽  
Scale Grid
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