Distributed noise‐resilient economic dispatch strategy for islanded microgrids

Chen, Feixiong; Chen, Minyou; Xu, Zhao; Guerrero, Josep M.; Wang, Le Yi

doi:10.1049/iet-gtd.2018.5740

Cited by 20 publications

(10 citation statements)

References 39 publications

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“…Computing time larger than GA GA [76][77][78][79][80][81][82][83][84] the evolutionary computation-based method provides global optimisation for the system regardless of historical data and system constraints. Iterative time-consuming process to achieve its optimal condition consensus algorithm [95][96][97][98][99][100][101][102][103][104][105][106][107][108][109][110][111][112] the precise computation method quickly converges all the agents to a common value with less data requirement. preferred at the primary level because of advantages over the other two control techniques mainly in terms of adaptive towards local variables, no communication requirement, significantly better voltage and current regulation along with easy implementation.…”

Section: Resultsmentioning

confidence: 99%

“…The consensus is an understanding of the agreement of an equal amount which depends on the status of all agents and after implementing mathematical analysis everyone tries to converge at one point. Many tools such as graph theory, matrix theory, and control theory have been used to solve consensus protocols [95,96]. Generally, the neighbouring rule has been taken to exchange information between nodes.…”

Section: Consensus Algorithmmentioning

confidence: 99%

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Review of hierarchical control strategies for DC microgrid

Abhishek

Ranjan

Devassy

et al. 2020

IET Renewable Power Generation

103

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This work presents an extensive review of hierarchical control strategies that provide effective and robust control for a DC microgrid. DC microgrid is an efficient, scalable and reliable solution for electrification in remote areas and needs a reliable control scheme such as hierarchical control. The hierarchical control strategy is divided into three layers namely primary, secondary and tertiary based on their functionality. In this study, different methods of primary control for current and voltage regulation, secondary control for error-correction in voltage and current, power sharing in a microgrid and microgrid clusters and tertiary control for power and energy management with a primary focus on minimal power loss and operational cost in a DC microgrid system are reviewed in-depth. Along with this, the advantages and limitations of various control structures like centralised, decentralised, distributed are discussed in this study. After a comparative study of all control strategies, the optimum control schemes from the author's point of view are also presented.

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Section: Resultsmentioning

confidence: 99%

Section: Consensus Algorithmmentioning

confidence: 99%

Review of hierarchical control strategies for DC microgrid

Abhishek

Ranjan

Devassy

et al. 2020

IET Renewable Power Generation

103

View full text Add to dashboard Cite

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“…In this paper, for solving dynamic EELD problem, time horizon is 24 hours and time resolution is 1 hour. Cost of dispatchable DGs is represented by (2) and their emission treatment cost is characterized by (3).…”

Section: Problem Formulationmentioning

confidence: 99%

“…In the last decades, we are facing a revolution in power and energy systems. Microgrids as a key building block of smart grids have been emerged to address the proliferation of distributed energy resources (DERs) 1‐4 . Microgrid is a cluster of distributed energy resources and loads that is normally connected to the upstream grid, however may disconnect and operate in island mode.…”

Section: Introductionmentioning

confidence: 99%

“…7 In centralized energy management systems, all the necessary data for MG scheduling is collected and a central control is done via MG master controller, however in distributed energy management systems, each MG component is considered as an agent with decision-making capability and optimal schedule is determined through iterative data exchange among agents. 2,7 Although each category offers its own advantages and disadvantages, the centralized energy management system is more suitable for application of optimization techniques and is used in this research. 3 EMS includes two modules; unit commitment (UC) module and dynamic economic load dispatch (DELD) module.…”

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confidence: 99%

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Dynamic environmental‐economic load dispatch in grid‐connected microgrids with demand response programs considering the uncertainties of demand, renewable generation and market price

Jordehi

2020

Int J Numerical Modelling

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Microgrids (MGs) as a key building block of smart grids have been emerged to address the proliferation of distributed energy resources. In grid-connected MGs, dynamic economic load dispatch (DELD) module determines optimal schedule of distributed energy resources and adjustable loads and power to be exchanged with upstream grid, while all operational constraints of the MG are respected. DELD in MGs represents a constrained optimization problem with uncertain input data, as the forecasts of demand, renewable generation and market price are uncertain. In this research, particle swarm optimization (PSO) as a bio-inspired optimization algorithm is used to solve DELD in gridconnected MGs, while demand response program is integrated into MG and the uncertainties of demand, renewable power generation and market price are dealt with two-point estimate method (TPEM). Load curtailment as a demand response program is used for reducing operation cost of microgrids. The performance of PSO is compared with two optimization algorithms including grey wolf optimization and backtracking search algorithm. As per the results, at times with low grid power price, microgrid imports power from upstream grid and at times with high power price it exports power to the upstream grid. The results show that the integration of demand response has significantly reduced the operation cost of the microgrid. The effect of change in maximum curtailable power on the operation cost of the MG has been investigated.

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