Smooth synchronization method for the reconnection of islanded microgrids

Alves, André G. P.; Dias, Robson F. S.; Rolim, L.G.B.

doi:10.1109/sbse.2018.8395527

Cited by 3 publications

(3 citation statements)

References 14 publications

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“…This points to the standalone operation of microgrids, minimizing the impact on loads. In this context, once the disturbance that caused the islanding has ended, the issue of reconnecting the microgrid to the main grid arises, as it is necessary to resynchronize the two subsystems [21]. The synchronization process from stand alone (SA) to grid-connected (GC) is classified into passive and active methods [22,23].…”

Section: Introductionmentioning

confidence: 99%

Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid

Mahmoud

Hafez

Yousef

et al. 2022

IET Power Electronics

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Recently, renewable distributed generation (DG) systems have emerged to improve the power system security and reliability while reducing the environmental incompatibility of fossil fuel power plants. DG could operate either as a standalone and/or as a grid‐connected power system. The interfacing circuits of DG and their controls have to comply with utility quality regulations and afford a seamless transition from online to offline and vice versa. This article advises a simple and robust control scheme for a modular multilevel converter (MMC) that interfaces with a photovoltaic (PV) generator. The proposed control method ensures high‐quality output voltage/current waveform in online and/or offline operating modes. Moreover, the proposed control provides a seamless and swift transition from standalone to grid‐connected and vice versa. The exhibited control scheme is simulated with MATLAB/Simulink. Real‐time simulator OPAL‐RT OP4510 is used to verify the displayed simulation results. The simulation results determine the accomplishment of the proposed control technique for a seamless transition from the grid‐connected mode to the standalone mode and vice versa via MMC.

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Section: Introductionmentioning

confidence: 99%

Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid

Mahmoud

Hafez

Yousef

et al. 2022

IET Power Electronics

View full text Add to dashboard Cite

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“…This solution has the advantage of avoiding voltage and current surges throughout the process, also allowing the smoothness adjustment and its numerical characterization, as well as being of easy implementation. A simplified version of this method was validated through simulations by Alves et al (2018). However, the authors did not thoroughly analyze the smooth synchronization advantages, methodology or provide experimental validation.…”

Section: Introductionmentioning

confidence: 99%

A Smooth Synchronization Methodology for the Reconnection of Autonomous Microgrids

Alves

Dias

Rolim

2020

J Control Autom Electr Syst

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This work proposes a control algorithm to be used in the synchronization process for the reconnection of an autonomous microgrid with the main grid. The control loop acts in the phase mismatch between the voltages and utilizes an adjustable parameter to regulate the transient dynamic, allowing for a smooth synchronization process. Simulations were made in order to evaluate its performance; then the algorithm was implemented in the TMS320F28377S digital signal processor and tested in a reduced-scale autonomous microgrid prototype using DRV8305EVM static converters. The results confirm that the proposed algorithm allows for smooth synchronization and reconnection processes, with the possibility of adjusting the smoothness numerically, providing another scientific criterion for the synchronization analysis, validating the proposal.

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“…Conversores fontes de tensão (VSC) vêm sendo amplamente utilizados no sistema elétrico. Aplicações como em integração de fontes renováveis com a rede através de Geração Distribuída (GD) (Alves et al (2018)), compensação reativa através de compensadores estáticos (Jeon et al (2019)), e acionamentos de máquinas elétricas (Jiang et al (2020)), são exemplos onde se tem o VSC acoplado a um sistema associado a uma impedância.…”

Section: Introductionunclassified

Detecção de Impedância Online para Conversores Fonte de Tensão através da Transformada Discreta de Fourier

Alves

Rolim

Dias

et al. 2020

Anais Do Simpósio Brasileiro De Sistemas Elétricos 2020

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Este trabalho utiliza uma metodologia de estimação de impedância através da transformada discreta de Fourier, expandindo o seu uso para aplicações convencionais associadas a conversores fonte de tensão. Tais aplicações incluem a integração de fontes renováveis de energia com a rede elétrica, compensação de potência reativa e alimentação de cargas com características indutiva. Resultados de simulação são utilizados para validar o estudo.

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Smooth synchronization method for the reconnection of islanded microgrids

Cited by 3 publications

References 14 publications

Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid

Fault‐tolerant modular multilevel converter for a seamless transition between stand‐alone and grid‐connected microgrid

A Smooth Synchronization Methodology for the Reconnection of Autonomous Microgrids

Detecção de Impedância Online para Conversores Fonte de Tensão através da Transformada Discreta de Fourier

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