نتایج جستجو برای: islanded microgrid aggregator

تعداد نتایج: 7004  

2013
N. Chitra A. Senthil Kumar K. Prabaakaran

Microgrid has come out as one of the key spots in research on distributed energy system. Since the definition of Microgrid is a paradigm for the first time, investigation in this area is growing continuously and there are numerous research projects this moment all over the world. This paper mainly focuses the concentration on power quality enhancement in an autonomous microgrid along with the n...

2011
Harry Rose Enrico H. Gerding

This paper presents a novel scoring rule-based mechanism that encourages agents to produce costly estimates of future events and truthfully report them to a centre when the budget for payments to the agents is itself determined by their reports. This is applied to a model of aggregated demand prediction within a microgrid where, given estimates of future consumptions, an aggregator must optimal...

Journal: :The Transactions of The Korean Institute of Electrical Engineers 2014

2011
Harry Thomas Rose Alex Rogers Enrico Gerding

This paper presents a novel scoring rule-based mechanism that encourages agents to produce costly estimates of future events and truthfully report them to a centre when the budget for payments to the agents is itself determined by their reports. This is applied to a model of aggregated demand prediction within a microgrid where, given estimates of future consumptions, an aggregator must optimal...

2012
M. Kohansal G. B. Gharehpetian M. Abedi M. J. Sanjari

The motivation to develop microgrids (MG), as a particular form of active networks is explained and presented as an effective solution for the control of grids. In MGs, with high level of penetration of Distributed Energy Resources, the stability becomes an important issue. Some control characteristics of elements such as droop coefficients in VSI highly affect voltage and frequency stability. ...

2015
Zambroni de Souza Marcos Santos Miguel Castilla Jaume Miret Luis García Diogo Marujo

This paper deals with the problem of voltage security in microgrids. In general, voltage security is an issue for power systems, where the lack of reactive power is a concern. For microgrids a complexity is imposed, since frequency and voltage level deviations may take place by the operation of droop-controlled inverters. This paper incorporates the load margin calculation into a microgrid stru...

Journal: :CoRR 2017
Di Shi Xi Chen Zhiwei Wang Xiaohu Zhang Zhe Yu Xinan Wang Desong Bian

One critical value microgrids bring to power systems is resilience, the capability of being able to island from the main grid under certain conditions and connect back when necessary. Once islanded, a microgrid must be synchronized to the main grid before reconnection to prevent severe consequences. In general, synchronization of a single machine with the grid can be easily achieved using a syn...

Journal: :amirkabir international journal of electrical & electronics engineering 2015
m. kosari s. h. hosseinian a. mahmoudi

variation of frequency and voltage by load changes in a microgrid is a challenge in droop control method. centralized restoration frequency or voltage in a microgrid requires communication link and therefore affects the advantage of decentralized droop control such as reliability, simplicity and inexpensiveness. this paper proposes a decentralized method that restores the frequency of a microgr...

This paper proposes a decentralized control technique to minimize the total operation cost of a DC microgrid in both grid-connected and islanded modes. In this study, a cost-based droop control scheme based on the hourly bids of all participant distributed generators (DGs) and the hourly energy price of the utility is presented. An economic power sharing technique among various types of DG unit...

2017
Francisco Martins Portelinha Júnior Antonio Carlos Zambroni de Souza Miguel Castilla Denisson Queiroz Oliveira Paulo Fernando Ribeiro

Microgrids are a feasible path to deploy smart grids, an intelligent and highly automated power system. Their operation demands a dedicated communication infrastructure to manage, control and monitor the intermittent sources of energy and loads. Therefore, smart devices will be connected to support the growth of grid smartness increasing the dependency on communication networks, which consumes ...

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