Single-Phase Consensus-Based Control for Regulating Voltage and Sharing Unbalanced Currents in 3-Wire Isolated AC Microgrids

Burgos-Mellado, Claudio; Llanos, Jacqueline; Espina, Enrique; Sáez, Doris; Cárdenas, Roberto; Sumner, Mark; Watson, Alan J.

doi:10.1109/access.2020.3022488

Cited by 20 publications

(21 citation statements)

References 32 publications

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“…Moreover, a two‐stage robust optimization model for flexible operation of MGs, which is a hierarchical based frequency control technique and formulated in Reference 99 and 126. Although, MG operating cost is minimum, primary and secondary control levels are used to restrict frequency deviations and avoid load shedding under the worst case of the islanded mode 80,100 …”

Section: Microgrid Control Techniquesmentioning

confidence: 99%

“…This control technique is solved by optimization technique on a large‐scale, which provides robustness to node‐failures and scalability to improve the performance of the MG system. Droop control technique using MAS based on two‐levels is proposed in Reference 100 for control and power‐sharing, in which the primary‐level controller is in distributed MG and the upper‐level is a MAS communication line composed of agents. In addition, a dynamic consensus‐based control technique is presented in Reference 100 wherein, the correction of an unbalanced voltage with a negative sequence current‐sharing compensation is achieved.…”

Section: Microgrid Control Techniquesmentioning

confidence: 99%

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Recent control techniques and management of AC microgrids: A critical review on issues, strategies, and future trends

Singh¹,

Singh²,

Verma

et al. 2021

Int Trans Electr Energ Syst

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Summary Distributed generation is considered as a key component of the emerging microgrid (MG) concept, enabling the integration of renewable sources in a distributed network. The MG has been accepted globally as a new approach that provides a flexible, reliable, sustainable, and economical solution for green and clean power generation. Microgrid is constituted by distributed energy resources (DERs) and is a combination of parallel connection equipped with suitable control and protection scheme for the operation in both islanded and utility grid‐connected mode. Microgrid structure with various hierarchy control techniques is categorized into three layers such as primary control, secondary control, and tertiary control techniques. A comprehensive literature review of these control techniques in AC microgrid is presented. In addition, the technical challenges of existing MGs affect real‐time applications around the globe. For the development and execution of various MG topologies, suitable power strategies are adopted to integrate distributed generation (IDG), energy storage system (ESS), and consumer loads for an improved energy management system (EMS). This paper presents a state‐of‐the‐art review of recent control techniques of AC microgrids with DERs having various important aspects; hierarchical control techniques, management strategies, technical challenges, and their future trends in the system. Moreover, a comparative performance analysis of our proposed review with existing surveys of AC control techniques with their individual merits and demerits have been presented. Furthermore, this investigation of different power control techniques applied in MG is compared and classified in terms of various important features, highlighting potential advantages, and different applications.

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Section: Microgrid Control Techniquesmentioning

confidence: 99%

Section: Microgrid Control Techniquesmentioning

confidence: 99%

Recent control techniques and management of AC microgrids: A critical review on issues, strategies, and future trends

Singh¹,

Singh²,

Verma

et al. 2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

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“…In [12], a distributed control strategy is proposed to share unbalanced currents in three-phase three-wire isolated AC microgrids. The control algorithm is based on an approach where the microgrid is analyzed not as a three-phase system, but as three single-phase subsystems.…”

Section: Literature Reviewmentioning

confidence: 99%

Decentralized Management System for Solid-State Voltage Regulators in Nodes of Distribution Power Networks

Polozov¹,

Sosnina²,

Kombarov³

et al. 2021

Adv. sci. technol. eng. syst. j.

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The article describes the concept and architecture of a decentralized control system for a solid-state voltage regulator (SSVR). The SSVR is a universal device for controlling the mode and operation parameters of medium voltage electrical networks. SSVR manage the amount of current in line using the vector voltage control method. The SSVR control system consists of two levels: the SSVR semiconductor converter control level (the technological control system), SSVR cluster management level (intelligent control system). The objective of the study is to develop an algorithm for managing the SSVR cluster located in the nodes of the distribution electric network. The Raft consensus algorithm for managing the computing cluster is applied to ensure reliable decentralized network management. The algorithm is iterative. Ethernet and PLC architectures are proposed for constructing a data transmission network between SSVR nodes. A simulation model of the SSVR cluster and its control system is developed to study the operation of the control system (node shutdown, loss of communication). The criteria for the normal operation of the intelligent control system are formulated and an algorithm for its operation in emergency situations is presented. The studies of the SSVR control system confirmed the operability of the developed control system in normal and emergency operation of the cluster on a simulation. The dependence of the control system response time on the number of cluster nodes is investigated. The maximum number of nodes in the SSVR cluster depending on the tasks being solved by the SSVR will be limited by the speed of the control system. If the number of cluster nodes increases, it is necessary to enlarge the minimum time interval between requests for control commands.

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“…It should be highlighted that in this paper unless otherwise stated, the inter-cell communication topology is that represented by the graph (a) (see on the top of Fig. 5), thus is given by (15). Moreover, the communication topology used to implement the inter-cluster distributed controller is that given by graph (d) (see the top of Fig.…”

Section: Proposed Consensus-based Control System For the Inter-cell And Inter-cluster Voltage Balancingmentioning

confidence: 99%

“…In this case, the energy balance among arms is realised using a PI controller that Within the research on distributed control schemes, the cooperative control, based on the consensus theory, has been successfully utilised and tested for microgrid (MG) applications. This theory has been used for addressing the following issues: (i) improvement of the sharing of reactive power [3] [9], (ii) optimal dispatch of distributed generation units in the MG [10] [11], and (iii) improvement of the power quality in unbalanced and/or distorted MGs [12] [13] [14] [15]. However, its use in the context of modular multilevel converters has not been extensively explored.…”

Section: Introductionmentioning

confidence: 99%

Distributed Control Strategy Based on a Consensus Algorithm for the Inter-cell and Inter-cluster Voltage Balancing of a Cascaded H-Bridge Based STATCOM

Burgos-Mellado

Gutierrez

Pineda

et al. 2020

2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL)

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Cascaded H-bridge converters are widely used in the implementation of medium voltage static synchronous compensators (STATCOMs). This is because of the advantages of relatively high-power density and the improved utilisation of low-voltage semiconductor devices. Major concerns with this topology are (i) to ensure a proper balance of the individual DC capacitor voltage in its cells, and (ii) the balancing of the average DC voltage between its clusters. In the research literature, these issues are typically addressed by using centralised control approaches, meaning that both an extensive processing capability and multiple digital outputs and communication channels for the switching signals are required, increasing system complexity. In contrast to this trend, in this paper, a distributed control scheme based on a consensus algorithm is proposed to deal with these issues in a three-phase STATCOM based on a cascaded H-bridge converter. The main advantages of the proposed control scheme are: (i) it does not require a centralised controller, since the cells work autonomously in a cooperative fashion to achieve voltage regulation, distributing the control effort among the cells, and (ii) it increases the fault tolerance of the converter and thus, the reliability of the system by adequately considering its redundancy. Extensive simulation work is provided to validate this proposal, and the characteristics described above.

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Single-Phase Consensus-Based Control for Regulating Voltage and Sharing Unbalanced Currents in 3-Wire Isolated AC Microgrids

Cited by 20 publications

References 32 publications

Recent control techniques and management of AC microgrids: A critical review on issues, strategies, and future trends

Recent control techniques and management of AC microgrids: A critical review on issues, strategies, and future trends

Decentralized Management System for Solid-State Voltage Regulators in Nodes of Distribution Power Networks

Distributed Control Strategy Based on a Consensus Algorithm for the Inter-cell and Inter-cluster Voltage Balancing of a Cascaded H-Bridge Based STATCOM

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