Domain-Based Dynamic Resource Management Mechanism Supporting Large-Scale Grid Application

2006 ◽  
Author(s):  
Guo-min Zhang ◽  
Yong Zhang ◽  
Ming Chen ◽  
Huan Xiong
Keyword(s):  
Resource Management ◽  
Large Scale ◽  
Management Mechanism ◽  
Dynamic Resource Management ◽  
Dynamic Resource ◽  
Large Scale Grid ◽  
Grid Application ◽  
Scale Grid

scholarly journals DYNAMIC RESOURCE MANAGEMENT IN LARGE CLOUD ENVIRONMENTS USING DISTRIBUTED GOSSIP PROTOCOL

2016 ◽  
pp. 286-290
Author(s):  
M. SASITHARAGAI ◽  
A. PADMASHREE ◽  
T. DHANALAKSHMI ◽  
S. GOWRI
Keyword(s):  
Resource Management ◽  
Large Scale ◽  
Management Control ◽  
Short Period ◽  
Gossip Protocol ◽  
Dynamic Resource Management ◽  
Cloud Environments ◽  
Dynamic Resource ◽  
The Cost ◽  
Server Clusters

Resource management poses particular challenges in large-scale systems, such as server clusters that simultaneously process requests from a large number of clients. We mainly focus on the dynamic resource management in large scale cloud environment. Our core contribution centers around outlining a distributed middleware architecture and presenting one of its key elements, a gossip protocol P* that meets our 3 main design goals: (1) fairness of resource allocation with respect to hosted sites (2) efficient adaptation to load changes and (3) scalability in terms of both the number of machines and sites. We first present a protocol that maximizes the cloud utility under CPU and memory constraints and also minimizes the cost for adapting an allocation. Then, we extend that protocol to have a management control parameter, which can be done with the help of profiling technique. A particular challenge is to develop a gossip protocol that is robust against node failures. In this paper, we present P*, a gossip protocol for continuous monitoring of aggregates, which is robust against discontiguous failures (i.e., under the constraint that neighboring nodes do not fail within a short period of each other)

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.

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