A Robust Frequency Controller based on Linear Matrix Inequality for a Parallel Islanded Microgrid

Pathan, Erum; Bakar, Afarulrazi Abu; Zulkifi, Shamsul Aizam; Khan, Mubashir Hayat; Arshad, H.; Asad, M.

doi:10.48084/etasr.3769

Cited by 12 publications

(6 citation statements)

References 12 publications

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“…DERs could include renewable units, dispatchable Distributed Generators (DGs), and Battery Energy Storage Systems (BESSs) [16][17][18]. Microgrids support the islanding operation capability [19][20][21]. Nevertheless, in some conditions, microgrids can provide ancillary services to other parts of the distribution network by supplying their excess generation back to the utility grid.…”

Section: Microgrids As An Intelligent Technique To Integratementioning

confidence: 99%

“…The restoration time for each interruption event, once the outage occurs, is formulated by (18). The reliability indices SAIDI, SAIFI, and CAIDI are computed by (19), (20), and (21), respectively. The auxiliary binary variable  is added to provide value and significance of minimizing the reliability indices in the objective.…”

Section: Wwwetasrcom Albaker: Reliability-based Optimal Integrated Mi...mentioning

confidence: 99%

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Reliability-Based Optimal Integrated Microgrid Scheduling in Distribution Systems

Albaker

2023

Eng. Technol. Appl. Sci. Res.

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This paper proposes a reliability-based optimal scheduling model of integrated microgrids. The proposed model is capable of delivering optimal scheduling of each individual microgrid and aggregated system. In addition, it is compatible with both grid-connected and islanded operation modes. The developed problem formulation of the proposed model takes into account the reliability indices SAIDI, SAIFI, and CAIDI to evaluate the reliability of the integrated system. Numerical simulations on a modified IEEE-33 bus test system, involving four integrated microgrids, were performed to investigate the advantages and the robustness of the developed model. Furthermore, the impact of merging Battery Energy Storage Systems (BESSs) on the optimization outcome is examined, which demonstrates its significant effectiveness in improving the power systems' reliability.

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Section: Microgrids As An Intelligent Technique To Integratementioning

confidence: 99%

Section: Wwwetasrcom Albaker: Reliability-based Optimal Integrated Mi...mentioning

confidence: 99%

Reliability-Based Optimal Integrated Microgrid Scheduling in Distribution Systems

Albaker

2023

Eng. Technol. Appl. Sci. Res.

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“…The purpose of the authors in [5] is to present LFC using a GA-based robust controller in a multi-area interconnected power system with governor uncertainties. In [6], a robust H∞ control technique for an islanded micro-grid in the presence of sudden changes in load conditions was proposed. In [7], the authors proposed the optimal sliding control method H∞ load frequency (SMLFC) for power systems with time delay.…”

Section: Introductionmentioning

confidence: 99%

Load-Frequency Control of Three-Area Interconnected Power Systems with Renewable Energy Sources Using Novel PSO~PID-Like Fuzzy Logic Controllers

Doan

Nguyen

Thai

2022

Eng. Technol. Appl. Sci. Res.

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Modern era power systems may include not only traditional primary energy sources like hydro or thermal energy, but also a variety of Renewable Energy (RE) sources such as solar and/or wind power. This leads to the complexity of the electrical networks related to their design and construction as well as system stability and control issues. Considered to be one of the most crucial control issues, Load Frequency Control (LFC), must be continuously improved in order to ensure the control goals. For an interconnected power system, the control purposes are to maintain the net frequency at nominal value, e.g. 50 or 60Hz as well as to ensure that tie-line power flows are stable at scheduled values. This work proposes a novel LFC strategy applying Particle Swarm Optimization (PSO) ~ PID – like fuzzy logic–based controllers. PSO is one of the most effective optimization techniques. It is used to optimally determine four scaling factors for each LFC proposed in this study. A three-area power network consisting of a hydraulic station, a non-reheat plant, and a reheat unit along with RE sources such as wind and solar power are taken into consideration. The control performance of the proposed control strategy is compared to those of existing controllers, i.e. Genetic Algorithm (GA), Bacteria Foraging Optimization Algorithm (BFOA), Fractional Order-PID (FPID), and fuzzy logic-based PI controllers for the same interconnected power grid model with various case studies of load changes along with nonlinearities and different RE source conditions. Simulation results implemented in MATLAB/Simulink demonstrate the feasibility and applicability of the proposed control strategy.

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“…The application of robust controllers in power electronic converters is gradually increasing (Pradhan et al, 2019;Sadabadi et al, 2017), such as AC-DC hybrid microgrid AC-DC section and photovoltaic inverter (Rasekh and Hosseinpour, 2020;Sedhom et al, 2020). There are several research studies on the realization of robust controllers in an inverter (Taher and Zolfaghari, 2014;Lai and Kim, 2018;Pathan, 2020;Dehkordi, 2020). However, the design of sensitivity function and the stable performance need to be studied further, regarding how to select disturbance variables and sensitivity functions reasonably, how to formulate inverter optimization control strategies, and how to design robust control schemes suitably for microgrid VSI.…”

Section: Introductionmentioning

confidence: 99%

A Novel H∞ Robust Control Strategy for Voltage Source Inverter in Microgrid

et al. 2021

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The voltage control performance of the voltage source inverter (VSI) in a microgrid may change under different load conditions. However, in the case of traditional control strategies, the robustness of VSI is insufficient. In response to the above problems, a novel robust control scheme for VSI in the microgrid based on H∞ hybrid sensitivity is proposed in this study. The grid-side interference during the VSI operation is taken as the variable, and the sensitivity function is designed to build a H∞ robust voltage controller for VSI. In addition, an adaptive virtual impedance group is designed to further improve the voltage control robustness under a variety of operation conditions. Finally, comparative simulation experiments are carried out to verify the anti-interference ability of the proposed control strategy under different working conditions.

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A Robust Frequency Controller based on Linear Matrix Inequality for a Parallel Islanded Microgrid

Cited by 12 publications

References 12 publications

Reliability-Based Optimal Integrated Microgrid Scheduling in Distribution Systems

Reliability-Based Optimal Integrated Microgrid Scheduling in Distribution Systems

Load-Frequency Control of Three-Area Interconnected Power Systems with Renewable Energy Sources Using Novel PSO~PID-Like Fuzzy Logic Controllers

A Novel H∞ Robust Control Strategy for Voltage Source Inverter in Microgrid

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