This paper deals with a protection and control strategy to enhance the low voltage ride through capability of a wind turbine driven doubly fed induction generator (DFIG). As the wind power penetration continues to increase, wind turbines are required to provide Low Voltage Ride-Through (LVRT) capability. Crowbars are commonly used to protect the power converters during voltage dips and their ma...

AC railway traction loads are usually huge single phase loads. As a result, a significant amount of Negative Sequence Current (NSC) is injected into utility grid. Moreover, harmonics and consumption ofreactive power are further power quality problems that the supply network is encountering. In this paper, acompensation strategy with the aid of Railway Power Conditioner (RPC) is proposed to over...

Grid computing offers a promising approach to solving challenging computational problems in an environment consisting of a large number of easily accessible resources. In this paper we develop strategies for solving collections of hard instances of the propositional satisfiability problem (SAT) with a randomized SAT solver run in a Grid. We study alternative strategies by using a simulation fra...

in recent years many transformations have occurred in iranian society and women and girls still have a lot of worries about comes to urban public spaces. also, due to some ambiguities in defining the domain of public space in traditional islamic cities and gaps in the knowledge related to the kurdish cities, the main problem of this paper is how we can define a participatory approach to improve...

Divisible loads are those workloads that can be partitioned by a scheduler into any arbitrary chunks. The problem of scheduling divisible loads has been defined for a long time, however, a handful of solutions have been proposed. Furthermore, almost all proposed approaches attempt to perform scheduling in dedicated environments such as LANs, whereas scheduling in non-dedicated environments such...

Many Grid portal architectures have three layers: browser, portal and Grid environment. We design a multi-layer Grid portal architecture, which introduced Mobile Agent; the mobile agents can gain the different information of the Grid resources. This paper analyzes the multi-layer architecture of Grid portal, presents the security strategy and introduces the function of different mobile agent.

The objective of this paper is to analyze the value of energy replacement in the context of demand response. Energy replacement is defined as the possibility of the consumer to choose the most convenient source for providing space heating to a smart building according to a dynamic electricity price. In the proposed setup, heat is provided by conventional electric radiators and a combined heat a...

As to the concrete topology of three-phase LCL type grid-connected inverter with damping resistance, mathematical model was deduced in detail, using method of equivalent transformation to the structure diagram, damping resistance was virtualized, mathematical model under the DQ frame that can realize decoupling control was established, a dual-loop control strategy for grid-connected inverter wi...

As an essential infrastructure, the rural power grid is vital in promoting agricultural and carbon sequestration improving energy electrification. It necessary to carry out in-depth research on its comprehensive efficiency. Based requirements of “double carbon” revitalization strategy for Power Grid, this paper focuses modernization low-carbon transformation Grid. constructs input-output index ...

Grid computing is a group of clusters connected over high-speed networks that involves coordinating and sharing computational power, data storage and network resources operating across dynamic and geographically dispersed locations. Resource management and job scheduling are critical tasks in grid computing. Resource selection becomes challenging due to heterogeneity and dynamic availability of...