Control strategies in AC microgrid: A brief review

Alfergani, Asma; Alfaitori, Khalid Ateea; Khalil, Ashraf; Buaossa, Nagi

doi:10.1109/irec.2018.8362575

Cited by 42 publications

(19 citation statements)

References 37 publications

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“…Various approaches to primary control have been proposed, especially for the inverter voltage source interface of distributed energy sources [45]. Most of these approaches use an inner/outer control loop based on the PI controller [46]. In [47], an intelligent load strategy based on a three-phase-single-phase AC-DC converter is proposed as a virtual synchronous machine to reduce frequency fluctuations in the island microgrid.…”

Section: Microgrid Primary Controlmentioning

confidence: 99%

A Literature Review of the Control Challenges of Distributed Energy Resources Based on Microgrids (MGs): Past, Present and Future

Razmi

2022

Energies

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Different types of distributed generation (DG) units based on renewable and non-renewable energy sources can create a local energy system in microgrids. The widespread penetration of distributed energy resources (DERs) has affected many power system issues, such as the control and operation of these networks. For the optimal operation of microgrids, optimal energy planning and management in the new space governing the distribution system requires extensive research and analysis. Getting acquainted with the latest research about the evaluation of the problems and challenges in the design of control systems plays an important role in providing a guidance map for researchers to find the recent challenges and propose new solutions. This paper tried to list the challenges of distributed generation sources for MG applications, opportunities, and solutions. These challenges are reported in hierarchical control strategies and power-sharing categories. Therefore, Model Predictive Control (MPC)-based approaches are reviewed for different recent control levels and power sharing strategies in a comprehensive and simple point of view. The performance comparison of MPC methods together and different allocated fitness functions and implementation algorithms are dedicated. Another hand, the potential of MPC methods to control inverters for increasing the reliability of the grid, which this feature could not be achieved by using conventional strategies, while has not been investigated by researchers widely, is introduced in a short review. Therefore, this paper shows an intersection guidance map for readers to facilitate future research works in these exciting and undiscovered fields.

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Section: Microgrid Primary Controlmentioning

confidence: 99%

A Literature Review of the Control Challenges of Distributed Energy Resources Based on Microgrids (MGs): Past, Present and Future

Razmi

2022

Energies

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“…However, the use of passive filter [10]- [11] may come out with parallel resonance in the system impedance, excess reparation of reactive power on fundamental frequency, along with reduced flexibility meant for dynamic reparation of diverse frequency components of harmonics. The growing severity of harmonics in electrical network has involved the interest of researchers to come up with dynamic and flexible solutions [12]- [14]. Such apparatus, usually recognized as active filter is capable to mitigate voltage and current harmonics.…”

Section: Introductionmentioning

confidence: 99%

Application of PI controller based active filter for harmonic mitigation of grid-connected PV-system

Khandelwal

Nema

2021

Bulletin EEI

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The recent trends show the interconnection of PV system with electric grid. With this configuration the issue of harmonics comes into existence. The mounting figure of power-electronic instruments has formed considerable impression on the power-quality of electric supply. Harmonics deformations have conventionally been handled amid the application of passive-LC filters. Active Filter has emerged as a good substitute for passive filters to reduce the harmonics to great extent as it has numerous benefits over the former filters. The active filter’s most vital part is the applied control strategies. Several researches are being under process to advance the functioning of the filter. One of the important control requirements of filter is the regulation of DC link up capacitor voltage. Here the voltage supervision of capacitor is being done using PI controller. The paper show current harmonics compensation of PV grid connected system using PI controller based active filter. Simulation outcomes have been shown which displays the harmonics are within the IEEE boundaries.

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“…The Supervisory Control and Data Acquisition (SCADA) runs in a centralized manner in a conventional large-scale power system and does not seem fit for the MG due to complexity and cost implications [4]. In the event of grid failure, for instance, SCADA may generate a huge number of fault records [5] that are not applicable in the MG. MAS is, therefore, a viable alternative technology that can effectively operate the MG [6]. A comprehensive review of MAS in regard to concepts, platforms, and applications for power systems has been made in [7].…”

Section: Introductionmentioning

confidence: 99%

Multi-Agents for Microgrids

Al-Agtash¹,

Al-Mutlaq²,

Elabbas³

et al. 2021

EPE

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Microgrid systems are built to integrate a generation mix of solar and wind renewable energy resources that are generally intermittent in nature. This paper presents a novel decentralized multi-agent system to securely operate microgrids in real-time while maintaining generation, load balance. Agents provide a normal operation in a grid-connected mode and a contingency operation in an islanded mode for fault handling. Fault handling is especially critical in microgrid operation to simulate possible contingencies and microgrid outages in a real-world scenario. A robust agent design has been implemented using MATLAB-Simulink and Java Agent Development Framework technologies to simulate microgrids with load management and distributed generators control. The microgrid of the German Jordanian University has been used for simulation for Summer and Winter photovoltaic generation and load profiles. The results show agent capabilities to operate microgrid in real-time and its ability to coordinate and adjust generation and load. In a simulated fault incident, agents coordinate and adjust to a normal operation in 0.012 seconds, a negligible time for microgrid restoration. This clearly shows that the multi-agent system is a viable solution to operate MG in real-time.

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Control strategies in AC microgrid: A brief review

Cited by 42 publications

References 37 publications

A Literature Review of the Control Challenges of Distributed Energy Resources Based on Microgrids (MGs): Past, Present and Future

A Literature Review of the Control Challenges of Distributed Energy Resources Based on Microgrids (MGs): Past, Present and Future

Application of PI controller based active filter for harmonic mitigation of grid-connected PV-system

Multi-Agents for Microgrids

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