Coordinated control and operation of a multi-microgrid system

Sahoo, Saroja Kanti; Kishore, Nanda

doi:10.1109/icpes.2017.8387307

Cited by 7 publications

(7 citation statements)

References 11 publications

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“…A two‐layer power flow model was introduced in [56] using a hierarchical control structure to regulate the critical bus voltage and frequency after a disturbance. Coordinate control of RES‐dominant MGs was presented in [57] to achieve network operation in grid‐connected and interconnected island modes. Droop control was used to realise network power sharing in interconnected operation mode.…”

Section: Control In Nmgsmentioning

confidence: 99%

Control and optimisation of networked microgrids: A review

Islam

Yang

Ամին

2021

IET Renewable Power Gen

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Microgrids (MGs) have become an integral part of smart grid initiatives for future power system networks. Networked microgrids consist of several neighbouring microgrids connected in a low/medium distribution network. The primary objective of a network is to share surplus/shortage power with neighbouring microgrids to achieve mutual cost‐effective operation, utilising green energy from renewable energy resources in the network and increasing the reliability of customer service. This article classifies networked microgrids on the basis of network formation and provides an overview of recent research on control of networked microgrids. In addition, a state‐of‐the‐art review of optimisation methods is provided to solve the energy optimisation problem in networked microgrids. Furthermore, the advantages and challenges of the networked operation of microgrids are presented as for possible research directions in the future.

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Section: Control In Nmgsmentioning

confidence: 99%

Control and optimisation of networked microgrids: A review

Islam

Yang

Ամին

2021

IET Renewable Power Gen

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“…The growing electricity demand and renewable energy penetration motivate the development of a new concept, multi-microgrid [22][23][24][25]. While an individual microgrid is connected to the low-voltage distribution grid, multi-microgrid consisting of several microgrids, distributed generators, storage systems, and controllable loads can be connected to medium-voltage distribution grid or high-voltage transmission grid [22].…”

Section: Coordination Of Multi-microgridmentioning

confidence: 99%

Optimal self‐healing strategy for microgrid islanding

Sun

Alvarez-Fernandez

et al. 2018

IET Smart Grid

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Renewable resource based microgrids provide reliable and cost-effective electricity with low carbon emissions. The flexibility of operating in grid-connected or islanded modes enables a microgrid to serve loads reliably. In the case of unexpected events happening to the main grid, the microgrid will isolate itself and operate in islanded mode to prevent any adversary impacts. The availability of renewable generation in the microgrid has significant impacts on the islanding strategy and different scenarios need to be considered. This study proposes a comprehensive microgrid self-healing strategy under different circumstances. The proposed strategy encompasses generation re-dispatch, network reconfiguration, and load shedding. The microgrid self-healing problem is formulated as a mixed-integer quadratic programming problem, which provides a globally optimal solution to facilitate smooth islanding of the microgrid. A modified Consortium for Electric Reliability Technology Solutions microgrid is used to conduct simulation under various scenarios. The simulation results demonstrate the efficiency of the proposed self-healing strategy in minimising costs of load shedding and generation with optimal switching actions.

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“…The various FACTS devices and other controllers may offer a better result. However, the focus of the present paper is to evaluate the performance of UPFC 37 Bridge converters-based controller DC multiple microgrids Designed a power flow controller Amoateng et al 38 Distributed cooperative control Inverter-based distributed generations between microgrids Develop adaptive voltage and frequency control method Pham et al 39 DC-link-based energy routers interface AC-DC multi-microgrid Analysis of common DC link between the microgrids Sahoo and Kishore 40 Voltage source converter One PV based and one windbased microgrid…”

Section: Introductionmentioning

confidence: 99%

Transient stability enhancement in renewable energy integrated multi-microgrids: A comprehensive and critical analysis

Liaqat,

Alsuwian,

Amin

et al. 2023

Measurement and Control

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Multi-microgrids offer various benefits including the decreased overloading of a single microgrid, more options during faulty conditions, and more utilization of renewable energy resources. However, the implementation of a multi-microgrid brings the challenges such as power system complexity, interconnection issues, bidirectional power flow management, and power flow balancing. In the presence of these challenges, the power flow stability of the multi-microgrids is a challenging problem. In this context, this study evaluates a transient stability analysis model in multi-microgrids using solar photovoltaics, wind power, and a unified power flow controller (UPFC). UPFC offers a more robust power flow control strategy compared with other flexible alternating current transmission systems (FACTS) devices. First, a multi-microgrid structure consisting of the two microgrids was designed in DIgSILENT PowerFactory software. Second, the load flow calculation was performed in the absence and presence of UPFC, short circuit fault, and grid connection. Third, the electromagnetic transients (EMT) simulation was performed for all these situations. The results exhibited that the UPFC would offer significant power flow stability in the multi-microgrids. It was observed that the UPFC resulted in more transient stability in the microgrid where it was located. However, it improved the power flow quality at all the locations in the multi-microgrids. In addition, UPFC offered significant transient stability during the fault occurrence. The results offer various insights into power flow management in multi-microgrids.

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Coordinated control and operation of a multi-microgrid system

Cited by 7 publications

References 11 publications

Control and optimisation of networked microgrids: A review

Control and optimisation of networked microgrids: A review

Optimal self‐healing strategy for microgrid islanding

Transient stability enhancement in renewable energy integrated multi-microgrids: A comprehensive and critical analysis

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