Control Techniques and Strategies for Microgrids: Towards an Intelligent Control

Făgărăşan, Ioana; Stamatescu, Iulia; Arghira, Nicoleta; Hossu, Daniela; Hossu, Andrei; Iliescu, Sergiu Stelian

doi:10.1109/cscs.2017.96

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…This system is stimulated for effective incorporation of small distributed generation units into an existing distribution network [40,64]. Hybrid AC/DC Microgrid is the application that incorporates both architectures and advantages of AC and DC microgrids [11,59,65]. Bidirectional AC/DC (interlinking) converters combine AC and DC microgrids from side to side.…”

Section: Hybrid Dc/ac Architecturementioning

confidence: 99%

“…In addition, the grid supervisory control level provides the tertiary control responsible for managing current flow between the utility grid and microgrid [71,72]. Based on communication mode, control strategies in DC microgrids could be categorized into decentralized, centralized, and distributed control, with their corresponding peculiar structures [44,45,65]. The reviewed control strategies for developing microgrid power quality, reliability, and power allocation methods are categorized as shown in Table 2.…”

Section: Microgrid Control Architecturementioning

confidence: 99%

“…This supports a projection of about 15% renewable generation by a research study at the University of Cape Town. The SAG should be committed to the development of RE-microgrid strategy to translate the set-out objectives, goals, and deliverables into a policy and implementation plan [11,65,101,102].…”

Section: Power Generation Targetmentioning

confidence: 99%

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A Review of Microgrid-Based Approach to Rural Electrification in South Africa: Architecture and Policy Framework

2020

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Access to electricity for every South African citizen, including rural dwellers, is a human right issue guaranteed by the government’s laws and policies. However, many remote rural areas still suffer from a lack of this very important amenity, due to the expensive prospect of connecting them to the central national grid. The feasible approach to connecting the rural communities to electricity supply is suggestively through the use of microgrid solutions. The microgrid technology is a very recent and viable option for the energy revolution. Microgrids result from the incorporation of energy storage systems, distributed generators, and localized loads. The application of this technology requires deliberate and extensive work on the operational architecture and the policy framework to be adopted. The energy storage devices form an integral part of the microgrid configuration or architecture to make sure more maintainable and constant operation is attained. This paper presents a review of the architectures of the existing microgrid systems, as well as the policy framework for implementable solutions. The various architectures display the peculiarity of the systems based on the increased grid performance, stability, quality of electricity, and other comparative advantages. The microgrid architectures are fundamentally recognized according to their AC, DC, or hybrid distribution buses and the complexity inherent to them. In the Policy And Development Section, the problems are treated as ‘a search for the truth’—a truth being revealed by close and objective examination. The core of the problem to be solved is revealed clearly, thereby giving the basis for simplifying and solving it. The policies encourage the accomplishment of a zero-carbon dioxide (CO 2 ) emissions, energy security attainment, the meeting of the electricity demand, and, lastly, the promotion of access to electricity in rural areas. It is established that the returns through charges of the consumers are very insignificant. Although returns on investment always come in conflict with the human right demands of the local indigenes, the policy framework would be explicit on the mode of returns for the government, private partners, and the communities—a return that can be short, medium, or long term. Policymakers would be keen on the exhaustive analysis of issues, leading to optimal decision making.

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Section: Hybrid Dc/ac Architecturementioning

confidence: 99%

Section: Microgrid Control Architecturementioning

confidence: 99%

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A Review of Microgrid-Based Approach to Rural Electrification in South Africa: Architecture and Policy Framework

2020

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“…Therefore, efforts have been concentrated towards control systems with high resilience, efficiency, scalability and also economical feasibility. As a result of these efforts, many control strategies [9][10][11][12][13][14][15] have emerged in the last two decades involving various control configurations. These control strategies have several discernible features, which are usually related to the control objectives (e.g., economically optimal, better power quality, higher resiliency), the elements (e.g., different types of power converters), the controlled quantities (e.g., current, power, voltage, frequency), the available measurements at each unit (e.g., only local or communication-based), and the overall system objectives at different time-scales (e.g., primary, secondary and tertiary control) [11].…”

Section: Introductionmentioning

confidence: 99%

Overview of Consensus Protocol and Its Application to Microgrid Control

Ferreira

Silva

et al. 2022

Energies

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Different control strategies for microgrid applications have been developed in the last decade. In order to enhance flexibility, scalability and reliability, special attention has been given to control organisations based on distributed communication infrastructures. Among these strategies, the implementation of consensus protocol stands out to cooperatively steer multi-agent systems (i.e., distributed generators), which is justified by its benefits, such as plug and play capability and enhanced resilience against communication failures. However, as the consensus protocol has a long trajectory of development in different areas of knowledge including multidisciplinary subjects, it may be a challenge to collect all the relevant information for its application in an emerging field. Therefore, the main goal of this paper is to provide the fundamentals of multi-agent systems and consensus protocol to the electrical engineering community, and an overview of its application to control systems for microgrids. The fundamentals of consensus protocol herein cover the concepts, formulations, steady-state and stability analysis for leaderless and leader-following consensus problems, in both continuous- and discrete-time. The overview of the applications summarises the main contributions achieved with this technique in the literature concerning microgrids, as well as the associated challenges and trends.

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Demand Dispatch for the Distribution Grid – A Proposal for the Romanian Power System

Arghira

Făgărăşan

Nichiforov

et al. 2019

2019 22nd International Conference on Control Systems and Computer Science (CSCS)

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Control Techniques and Strategies for Microgrids: Towards an Intelligent Control

Cited by 8 publications

References 20 publications

A Review of Microgrid-Based Approach to Rural Electrification in South Africa: Architecture and Policy Framework

A Review of Microgrid-Based Approach to Rural Electrification in South Africa: Architecture and Policy Framework

Overview of Consensus Protocol and Its Application to Microgrid Control

Demand Dispatch for the Distribution Grid – A Proposal for the Romanian Power System

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