A cost minimization strategy for the control of hybrid AC-DC microgrids in industrial systems

Bracale, Antonio; Caramia, P.; Mottola, Fabio

doi:10.1109/iccep.2015.7177598

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…It is important to minimize the operation cost and coordinate supporting services, meanwhile maximizing the reliability and controllability of microgrids. Therefore, optimization of the MG cost function is one of the trends in the future research [161][162][163][164].…”

Section: Cost-prioritized Control Schemesmentioning

confidence: 99%

“…A directly operating schedule for a whole day is presented in [163], which allocates the power to the loads in an optimal strategy by constructing the cost function reasonably. A short-time predictive control is presented in [164] to regulate the active and reactive powers in the microgrid, and coordinate the optimal operation of dispatchable resources and the daily costs of the energy imported from the grid.…”

Section: Cost-prioritized Control Schemesmentioning

confidence: 99%

“…Microgrids can be better utilized when the problems of load active and reactive power sharing are effectively solved. The future trends on MG research and application can be summarized as follows [155][156][157][158][159][160][161][162][163][164][165][166][167][168][169].…”

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confidence: 99%

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Review of Active and Reactive Power Sharing Strategies in Hierarchical Controlled Microgrids

Han

Shen

et al. 2017

IEEE Trans. Power Electron.

698

341

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Microgrids consist of multiple parallel-connected distributed generation (DG) units with coordinated control strategies, which are able to operate in both grid-connected and islanded mode. Microgrids are attracting more and more attention since they can alleviate the stress of main transmission systems, reduce feeder losses, and improve system power quality. When the islanded microgrids are concerned, it is important to maintain system stability and achieve load power sharing among the multiple parallel-connected DG units. However, the poor active and reactive power sharing problems due to the influence of impedance mismatch of the DG feeders and the different ratings of the DG units are inevitable when the conventional droop control scheme is adopted. Therefore, the adaptive/improved droop control, network-based control methods and cost-based droop schemes are compared and summarized in this paper for active power sharing. Moreover, nonlinear and unbalanced loads could further affect the reactive power sharing when regulating the active power, and it is difficult to share the reactive power accurately only by using the enhanced virtual impedance method. Therefore, the hierarchical control strategies are utilized as supplements of the conventional droop controls and virtual impedance methods. The improved hierarchical control approaches such as the algorithms based on graph theory, multi-agent system, the gain scheduling method and predictive control have been proposed to achieve proper reactive power sharing for islanded microgrids and eliminate the effect of the communication delays on hierarchical control. Finally, the future research trends on islanded microgrids are also discussed in this paper.

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Section: Cost-prioritized Control Schemesmentioning

confidence: 99%

Section: Cost-prioritized Control Schemesmentioning

confidence: 99%

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Review of Active and Reactive Power Sharing Strategies in Hierarchical Controlled Microgrids

Han

Shen

et al. 2017

IEEE Trans. Power Electron.

698

341

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show abstract

“…Cost optimisation-based control: The cost minimisation and reliability and controllability maximisation in MG operation is an important task. Hence, the cost function optimisation-based control is a futuristic research area [241][242][243][244]. The real-time economic evaluation is presented in [241] while taking into account the load profile, generation, and pricing.…”

Section: Energy Storage Management and Economic Schedulingmentioning

confidence: 99%

“…GA and predictive control for economic pricing and power regulation are presented in [242, 243], respectively. Day‐to‐day scheduling of operating cost based on a carefully selected cost function optimisation is presented in [244]. 7.…”

Section: Future Trend In Mg Researchmentioning

confidence: 99%

Comprehensive review on hierarchical control of cyber‐physical microgrid system

Shrivastava

Subudhi

2020

IET gener. transm. distrib.

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A microgrid (MG) is a cyber-physical system that facilitates integration of several distributed renewable energy resources. In the last decade, several efforts were made to standardise the framework of a cyber-physical MG network and its control structure. In this perspective, various studies discussing the different control techniques are reported in the literature. However, a comprehensive and systematic review of a cyber-physical MG is discussed rarely. In this study, a comprehensive review of a MG architecture and hierarchical control structure in both islanded and grid-connected modes are presented. The hierarchical control of the MG includes primary, secondary, and tertiary control. Recent studies provide significant opportunities in dividing the control task among various layers resulting in a distributed framework. This study analyses the cyber and physical networks separately while discussing the primary, centralised, and distributed secondary control levels with their merits, demerits, and typical applications. A Venn diagram analysis is also presented that clearly distinguishes the primary control scheme in different research sub-areas. Furthermore, the MG communication structure, protocols, design, constraints, and cyber security are also reviewed systematically. Finally, future trends are summarised based on the state-of-the-art MG research. 1.1 Comparison with existing review articles Unlike the existing review articles in the literature [6, 9, 32-35], this paper gives a detailed hierarchical control structure with primary, secondary, and tertiary control levels along with a detailed discussion on communication constraints in a cyber-physical MG network. The state-of-the-art review presented in [6] discusses the issues concerning MGs and provides an account of research in areas related to MG, i.e. DG, applications of power electronics, economic issues, MG operation and control, MG clusters, and protection and communication issues. However, the discussion is limited to the overall introduction and does not provide deep insight and comparison on the control schemes at different levels and communication constraints as the one presented in this work.

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Characterization of Energy Consumers in Production Systems with Renewable On-Site Power Generation

Schulz¹,

Rosenberg²,

Scharmer³

et al. 2020

IFIP Advances in Information and Communication Technology

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The amount of renewable energy is increasing in the German energy system. As a result, grid expansion, consumer regulation (demand response), innovative storage solutions or intelligent grid operation are measures to avoid system instabilities. The development of energy prices and regulatory charges is difficult to predict against this dynamic background. The technological development of small power plants is in progress and many of the offered technologies are reaching grid parity. To increase independency from the grid and to avoid grid supply in periods of high prices, the integration of decentral, renewable power generation technologies is a reasonable solution for manufacturing companies. Therefore, a procedure for industrial companies to use their self-produced energy in a sustainable manner is introduced. This paper focuses on the characterization of industrial energy consumers, which is one of the first steps in the procedure. Different consumer criteria are descripted to define 48 consumer groups. Certain factories include consumers that can be described by a multitude of these consumer groups.

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A cost minimization strategy for the control of hybrid AC-DC microgrids in industrial systems

Cited by 8 publications

References 11 publications

Review of Active and Reactive Power Sharing Strategies in Hierarchical Controlled Microgrids

Review of Active and Reactive Power Sharing Strategies in Hierarchical Controlled Microgrids

Comprehensive review on hierarchical control of cyber‐physical microgrid system

Characterization of Energy Consumers in Production Systems with Renewable On-Site Power Generation

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