The realization of the Smart Grid vision will change the way of producing and distributing electrical energy. It paves the road for end-users to become pro-active in the distribution system and, equipped with renewable energy generators such as a photovoltaic panel, to become a so called “prosumer”. The prosumer is engaged in both energy production and consumption. Prosumers’ energy can be tran...

Connection of distributed generation (DG) units, energy storages, and new loads into low voltage (LV) grids leads to a constrained operation of the grids. Consequently, voltage limits violation and overloading of grid assets occur more frequently. To tackle these issues, distribution system operators (DSO) still employ traditional techniques in planning distribution grids to increase grid hosti...

This study addresses the output impedance model of LCL-type grid-connected converter considering dead-time effects and digital control delay. The shows that delay will affect accuracy converter, are only equivalent to superimposing a disturbance voltage on original model. derived is verified by comparing it with switching in PSIM simulation environment. harmonic interaction between cluster util...

In this paper an optimal planning method is proposed for sizing a cogeneration plant to be installed within a public/commercial micro-grid. The optimization tool is based on a mixed integer linear programming model which uses a set of experimental input data in terms of both thermal and electric power consumption for determining the annual operational strategy, able to reach a twofold objective...

The electric power infrastructure in the United States is undergoing a significant transformation. To enhance the ability of the grid to support the use of diverse and renewable energy resources and to respond to problems more quickly, the infrastructure is being redesigned to include greater options for automation, measurement and control. An enormous communications system will underlie the ne...

In single-phase voltage source inverters under a weak grid, the frequency coupling, caused by asymmetrical system structure, poses challenge to modeling and controller design. this article, coupling suppression control strategy is presented, where all components in current reference are eliminated. As result, grid-tied inverter directly modeled as simple single-input single-output (SISO) admitt...

Grid computing is now in widespread use, integrating geographical computing resources across multiple virtual organizations to achieve high performance computing. A single grid does not often provide a vast resource because virtual organizations have inadequate computing resource restrictions for management on an organizational scale. This paper presents a new grid architecture named Multi-Grid...