Operation principle of multiple DC smart grids

Yamauchi, Hayato; Kina, Masahiko; Kurohane, Kyohei; Uchida, Kosuke; Yona, Atsushi; Senjyu, Tomonobu

doi:10.1109/peds.2011.6147263

Cited by 11 publications

(4 citation statements)

References 10 publications

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“…In each of the operating modes the dcbus is regulated by different elements in the network. The coordination of multiple dc-grids through droop control is presented in [8].…”

Section: Introductionmentioning

confidence: 99%

Decentralized control of MTDC networks with energy storage and distributed generation

Gavriluţă

Candela

Citro

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

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Multi-terminal dc (MTDC) networks are drawing a lot of interest lately in applications related to distributed generation, especially in those that integrate energy storage. Several approaches for controlling the operation of such systems have been proposed in the literature; however the existing structures can be significantly enhanced. This paper proposes an improved primary control layer, based on droop and dc-bus signaling to serve as a base framework for implementing a hierarchical control structure in a MTDC system. As it will be further discussed in this work, five operating bands as well as various droop characteristics for different elements connected to the dc-bus were defined. For the energy storage the state of charge (SoC) was taken into account at the primary control level and it was included in the droop characteristic, creating a two variables droop surface. The proposed control strategy was validated through simulation and experimental results obtained from a case study that involves a micro dc network composed of a PV generator, a lead-acid battery and one connection point to the ac grid. © 2013 IEEE.Postprint (published version

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“…In each of the operating modes the dcbus is regulated by different elements in the network. The coordination of multiple dc-grids through droop control is presented in [8].…”

Section: Introductionmentioning

confidence: 99%

Decentralized control of MTDC networks with energy storage and distributed generation

Gavriluţă

Candela

Citro

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

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“…Therefore, the coordinating operation of the power equipments and storage devices is indispensable to supply the steady power. Nevertheless, the cost of DG is high when starting up or shutting down because of the fuel shortage in the isolated islands [7].…”

Section: Introductionmentioning

confidence: 99%

Optimal operation of power systems with power players

Mengyan

Higa

Yona

et al. 2012

2012 International Conference on Renewable Energy Research and Applications (ICRERA)

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Due to the global warming and energy resource shortage, renewable energies such as wind generation (WG), photovoltaic (PV) facility are getting more attention in distribution systems. It is very necessary to use renewable energy with present power equipments cooperatively as it can be easily affected by the different weather conditions. Since the cost of diesel generator (DG) is high when starting up or shutting down, the electric power system should consist of small power system groups and share electric power with each other by interchanging. In this paper, the optimal method is proposed to determine the scheduling of the isolated island power system including WG, PV facility, DG, and battery energy storage system (BESS). The optimization is divided into two parts using genetic algorithm. First, the scheduling problem of DG unit commitment is decided by the revised load with the optimal operation of individual power system. Second, optimization of the electric power system group is performed by using the results of first step. The simulation results show the reduction of operational cost which confirms the feasibility and effectiveness.

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“…At present, only AC smart grids are used in practical applications, whereby the DCSG (DC smart grid) has been proposed by the authors [5][6][7][8]. In Refs.…”

mentioning

confidence: 99%

“…In Refs. [5,6], the authors have proposed the operation of a DC MSG (DC micro smart grid) and the multi DC smart grid in isolated mode. However, there was no discussion on how the DC MSG will operate in insolation mode, especially if there is less power generation in comparison to load demand.…”

mentioning

confidence: 99%

Fuzzy Logic Controlled Dual Active Bridge Series Resonant Converter for DC Smart Grid Application

Nassor¹,

Yona²,

Senjyu³

2015

JEPE

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Abstract:Over the last few years, smart grids have become a topic of intensive research, development and deployment across the world. This is due to the fact that, through the smart grid, stable and reliable power systems can be achieved. This paper presents a fuzzy logic control for dual active bridge series resonant converters for DC smart grid application. The DC smart grid consists of wind turbine and photovoltaic generators, controllable and DC loads, and power converters. The proposed control method has been applied to the controllable load's and the grid side's dual active bridge series resonant converters for attaining control of the power system. It has been used for management of controllable load's state of charge, DC feeder's voltage stability during the loads and power variations from wind energy and photovoltaic generation and power flow management between the grid side and the DC smart grid. The effectiveness of the proposed DC smart grid operation has been verified by simulation results obtained by using MATLAB ® and PLECS ® cards.

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Operation principle of multiple DC smart grids

Cited by 11 publications

References 10 publications

Decentralized control of MTDC networks with energy storage and distributed generation

Decentralized control of MTDC networks with energy storage and distributed generation

Optimal operation of power systems with power players

Fuzzy Logic Controlled Dual Active Bridge Series Resonant Converter for DC Smart Grid Application

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