A Decentralized Control Method for Distributed Generations in an Islanded DC Microgrid Considering Voltage Drop Compensation and Durable State of Charge

Hwang, Chul-Sang; Kim, Eung-Sang; Kim, Yun-Su

doi:10.3390/en9121070

Cited by 20 publications

(11 citation statements)

References 17 publications

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“…But in this case, the coordination must be enough strong. The energy management system (EMS) of decentralized control approach is highly feasible [109]. The energy storage system (ESS),used as a voltage source, is controlled by either constant current mode or constant voltage mode.…”

Section: Decentralized Controlmentioning

confidence: 99%

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A survey on control issues in renewable energy integration and microgrid

Badal

Das

Sarker

et al. 2019

Prot Control Mod Power Syst

254

112

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This paper describes the usefulness of renewable energy throughout the world to generate power. Renewable energy adds a remarkable scope in power system. Renewable energy sources act as the prime mover of a microgrid. The Microgrid is a small network of power system with distributed generation (DG) units connected in parallel. The integration challenges of renewable energy sources and the control of microgrid are described in this paper. The varied nature of DG system produces voltage and frequency deviation. The unknown nature of the load produces un-modeled dynamics. This un-modeled dynamic introduces measurable effects on the performance of the microgrid. This paper investigates the performance of the microgrid against different scenarios. The voltage of the microgrid is controlled by using different controllers and their results are also investigated. The performance of controllers is investigated using MATLAB/Simulink SimPowerSystems.

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Section: Decentralized Controlmentioning

confidence: 99%

“…The main disadvantage of the decentralized control is that, when the ESS is used as a voltage source, it is suffered by the lack of SOC information for the DG units [109]. There is no communication system is used in decentralized control method.…”

Section: Decentralized Controlmentioning

confidence: 99%

A survey on control issues in renewable energy integration and microgrid

Badal

Das

Sarker

et al. 2019

Prot Control Mod Power Syst

254

112

View full text Add to dashboard Cite

show abstract

“…Differently from what happens in the centralized control scheme, when a communication link is lost, the entire system is still able to work since the agents are all connected between each other through other links. However, the deployment of the local controllers and control schemes requires the existence of high coordination standards, which makes this scheme harder to implement [14], [17].…”

Section: Literature Reviewmentioning

confidence: 99%

Decentralized Multi-Agent System Applied to the Decision Making Process of the Microgrid Restoration Procedure towards Sustainability

Rokrok¹,

Shafie‐khah²,

Osório³

et al. 2019

Proceedings of the Annual Hawaii International Conference on System Sciences

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A significant procedure to ensure the consumer supply is Power System Restoration (PSR). Due to the increase of the number of distributed generators in the grid, it is possible to shift from the conventional PSR to a new strategy involving the use of distributed energy resources (DER). In this paper, a decentralized multiagent system (MAS) is proposed to cope with the restoration procedure in a microgrid (MG). Each agent is assigned to a specific consumer or microsource (MS), communicating with other agents at every stage of the restoration procedure so that a common decision is reached. The 0/1 knapsack problem is the problem that every agent solves to determine the best load connection sequence during the restoration of the MG. Two different case studies are used to test the MAS on a dynamically modeled benchmark MG: a total blackout and a partial blackout. Regarding the partial blackout case, demand response emergency programs are considered to manage the loads in the MG. The MAS is developed in Matlab/Simulink environment and by performing the corresponding dynamic simulations it is possible to validate this system towards sustainability.

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“…The earliest studies on the structure and control methods of DC power networks originated from DC nanogrids [12][13][14][15][16][17]. Bryan et al [12] proposed using DC bus voltage as the control signal, differentiating operation modes by the value of DC bus voltage, which is allowed to change in a certain range; however, the grid-connected mode was not taken into account.…”

Section: Introductionmentioning

confidence: 99%

A DC Microgrid Coordinated Control Strategy Based on Integrator Current-Sharing

et al. 2017

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The DC microgrid has become a new trend for microgrid study with the advantages of high reliability, simple control and low losses. With regard to the drawbacks of the traditional droop control strategies, an improved DC droop control strategy based on integrator current-sharing is introduced. In the strategy, the principle of eliminating deviation through an integrator is used, constructing the current-sharing term in order to make the power-sharing between different distributed generation (DG) units uniform and reasonable, which can reduce the circulating current between DG units. Furthermore, at the system coordinated control level, a hierarchical/droop control strategy based on the DC bus voltage is proposed. In the strategy, the operation modes of the AC main network and micro-sources are determined through detecting the DC voltage variation, which can ensure the power balance of the DC microgrid under different operating conditions. Meanwhile, communication is not needed between different DG units, while each DG unit needs to sample the DC bus voltage, which retains the plug-and-play feature of the DC microgrid. The proposed control strategy is validated by simulation on a DC microgrid with permanent magnet synchronous generator-based wind turbines, solar arrays and energy storage batteries, which can be applied to small commercial or residential buildings.

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A Decentralized Control Method for Distributed Generations in an Islanded DC Microgrid Considering Voltage Drop Compensation and Durable State of Charge

Cited by 20 publications

References 17 publications

A survey on control issues in renewable energy integration and microgrid

A survey on control issues in renewable energy integration and microgrid

Decentralized Multi-Agent System Applied to the Decision Making Process of the Microgrid Restoration Procedure towards Sustainability

A DC Microgrid Coordinated Control Strategy Based on Integrator Current-Sharing

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