Multi-Frequency Control in a Stand-Alone Multi-Microgrid System Using a Back-To-Back Converter

This paper proposes a peer-to-peer interaction between microgrids based on energy router to handle network congestions and other local microgrid issues in multi-microgrid system. First, an overview of energy routers in the vision of Energy Internet is addressed. Energy routers with Back-to-Back converter technology is considered in this paper due to its appropriate requirement. Next, a master/slave approach for load sharing and synchronization with energy router in multimicrogrid system is investigated. Finally, a strategy for frequency coordination between microgrids is presented. In fact, in case of frequency violation, microgrids in islanded multimicrogrid system can be supported by other microgrids through an energy router interface. A simulation model is built in MATLAB/Simulink environment to evaluate the efficiency of the proposed method.

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“…The frequency control of the MMG system can be improved by the ERs [16]. A summarized MMG system is shown in Fig.…”

Section: ) Frequency Coordinationmentioning

confidence: 99%

Power management in multi-microgrid system based on energy routers

Pham

Razi

Hably

et al. 2020

2020 IEEE International Conference on Industrial Technology (ICIT)

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“…Although circuit breakers are usually used for interlinking AC IMGs [8], [11], [14], [15], back-to-back converters (BT-BCs) are more flexible interfaces, which result in a separate frequency control of MGs [10], [13], [17]- [20]. Generally speaking, the control and operation of BTBC-IMGs are similar to the multi-area power systems inter-tied through high-voltage DC [20]- [22]. Both systems similarly lead to frequency stability improvement due to eliminating inter-area frequency interactions.…”

Section: Introductionmentioning

confidence: 99%

Interconnected Autonomous ac Microgrids via Back-to-Back Converters—Part II: Stability Analysis

Naderi

Khayat

Shafiee

et al. 2020

IEEE Trans. Power Electron.

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“…With the advancement of power electronic technologies, DC interconnected MMGs are anticipated to be an advanced MMGs configuration due to the favorable controllability and operation characteristics of the DC connection interfaces [14]. The DC interconnection among the microgrids is able to promote the flexible and optimized operation of the MMGs via the advanced control system.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Layer Coordinated Control Scheme to Improve the Operation Friendliness of Grid-Connected Multiple Microgrids

Huang

Tai

et al. 2019

Energies

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Multiple microgrids (MMGs) are clusters of interconnected microgrids that have great potential for integrating a large number of distributed renewable energies (DREs). The grid-connected control scheme is important for the exploration of the MMGs’ operation potential. In this paper, a multi-layer coordinated control scheme for DC interconnected MMGs is proposed to optimize their operation and improve their operation friendliness. An adaptive droop control method is designed for the DC connection interfaces of the MMGs to adaptively manage the power exchange among the sub-microgrids. Meanwhile, the strategy of power fluctuation suppression is developed for the hybrid energy storage system (HESS) in the MMGs. The coordination among the sub-microgrids and the HESS is then clarified by the proposed control scheme to optimize the AC tie-line power and make the MMGs a highly coordinated collective. A case study is performed in PSCAD/EMTDC based on the demonstration project in Guangxi, China. The results show that the proposed multi-layer coordinated control scheme realizes the coordinated operation of the MMGs, fully exploits the complementarity of the MMGs, and improves the operation friendliness among the sub-microgrids and the utility grid. Thus the integration and utilization of a large number of DREs is enhanced.

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Multi-Frequency Control in a Stand-Alone Multi-Microgrid System Using a Back-To-Back Converter

Cited by 44 publications

References 31 publications

Power management in multi-microgrid system based on energy routers

Power management in multi-microgrid system based on energy routers

Interconnected Autonomous ac Microgrids via Back-to-Back Converters—Part II: Stability Analysis

A Multi-Layer Coordinated Control Scheme to Improve the Operation Friendliness of Grid-Connected Multiple Microgrids

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