Grid systems integrate distributed resources to form self-organization and self-management autonomies. With the widespread development of grid systems around the world, grid collaboration for largescale computing has become a prevalent research topic. In this paper, the authors propose a meta-grid framework, named the Grid-to-Grid (G2G) framework, to harmonize autonomic grids in realizing a gri...

in this research by taking advantage of degradtion model ina grid system an area of 9222 km in eastern part of tehran province including eslam shahr , rey , varamin , damavand , and firooz kooh were studied . the results show that 43.8 % of the area , due to its natural condition , is not suitable for development. the rest of the area ( 42.5) due to the degradation caused by man's activiti...

This paper describes a micro-grid system and its monitoring system. This micro-grid system consists of generation systems, consumer electrical equipments, auxiliary equipments and the monitoring system. All the equipments have 485 communication interfaces. In order to monitor and manage this micro-grid system, we built a monitoring system, which contains modular instrument system and industrial...

With increasing the applications of grid system, the risk in security field is enhancing too. Recently Trust management system has been recognized as a noticeable approach in enhancing of security in grid systems. In this article due to improve the grid security a new trust management system with two levels is proposed. The benefits of this platform are adding new domain in grid system, selecti...

Grid computing has emerged as a technology to solve the problem of sharing and cooperating of computational resources in wide area. In this paper, we propose a Grid architecture called Vega Personal Grid (the Vega PG). The key feature of the Vega PG is that it is a usercentered lightweight Grid architecture. We make a mapping between traditional computer systems and the Vega PG, which comprises...

Received Jul 8, 2014 Revised Oct 6, 2014 Accepted Oct 20, 2014 Renewable power generation using photovoltaic is very interesting to be developed to deal with the problems of conventional energy sources and environmental issues. The photovoltaic power generation can operate both in stand-alone and grid-connected operations. This paper presents an application of the single-phase five-level common...

Grid technology brings about a lot of innovative ideas and technologies for the development of Decision Support System. The existence of description languages, semantics, service publishing methods and Grid middleware have up to now enabled interoperability between decision resources available across the Grid environment. However, there is an emerging need for the ability to dynamically discove...

Smart grid is a new developing concept in power system. This technology observes the state of power system and intelligently take decisions to quickly clear faults, restores power and monitor demand to preserve the stability and performance of the electric power network formerly done by engineers. This paper discusses the technologies of smart grid and presents a developed model to illustrate t...

Grid computing has received widespread attention in recent years as a significant new research field. Yet to date, there has been only a limited work on the grid system authorization problem. In this paper, we address the authorization problem and its requirements in a grid system environment. We propose a new integrated authorization service that tackles the authorization problem at two levels...