A Multiobjective Secondary Control Approach for Optimal Design of DG Droop Characteristic and Control Mode for Autonomous Microgrids

Gabl, Omar M. Abo; Shaaban, Mostafa; Zeineldin, H. H.; Ammar, Mohammed E.

doi:10.1109/jsyst.2021.3114963

Cited by 4 publications

(5 citation statements)

References 40 publications

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“…The sensitivity factor improves the system dynamic performance. A voltage and current double closed-loop controller is designed to further improve immunity and power quality of the inverter and reduce the influence of random disturbances on the voltage and frequency of the ship propulsion system [43][44][45]. The schematic diagram of the droop controller is shown in Figure 14.…”

Section: Design Of Two-layer Coordinated Control Strategy Based On Dy...mentioning

confidence: 99%

Research on Multi-Energy Integrated Ship Energy Management System Based on Hierarchical Control Collaborative Optimization Strategy

Ren

Zhang

Shi

et al. 2022

JMSE

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The propulsion systems of hybrid electric ship output and load demand have substantial volatility and uncertainty, so a hierarchical collaborative control energy management scheme of the ship propulsion system is proposed in this paper. In a layer of control scheme, the traditional perturbation algorithm is improved. Increasing the oscillation detection mechanism and establishing the dynamic disturbance step length realizes the real-time stability of maximum power point tracking control. In the second-layer control scheme, the power sensitivity factor and voltage and current double closed-loop controller is introduced. By designing a two-layer coordinated control strategy based on the dynamic droop coefficient, the problem of voltage and frequency deviation caused by load switching is solved. In the third-layer control scheme, due to the need of the optimal scheduling function, the multi-objective particle swarm optimization algorithm was improved through three aspects: introducing the mutation factor, improving the speed formula, and re-initializing the strategy. Compared with other algorithms, this algorithm proves its validity in day-ahead optimal scheduling strategy. The superiority of the hierarchical collaborative optimization control schemes proposed was verified, in which power loss was reduced by 39.3%, the overall tracking time was prolonged by 15.4%, and the environmental cost of the diesel generator was reduced by 8.4%. The control strategy solves the problems of the steady-state oscillation stage and deviation from the tracking direction, which can effectively suppress voltage and frequency fluctuations.

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Section: Design Of Two-layer Coordinated Control Strategy Based On Dy...mentioning

confidence: 99%

Research on Multi-Energy Integrated Ship Energy Management System Based on Hierarchical Control Collaborative Optimization Strategy

Ren

Zhang

Shi

et al. 2022

JMSE

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“…The secondary control in island mode microgrids ensures the power quality requirements such as the voltage and frequency regulations and harmonic compensation [11]. For this purpose, a voltage regulation loop is used to regulate the voltage deviation caused by the primary control.…”

Section: Introductionmentioning

confidence: 99%

“…The hierarchical control method that combines the advantages of centralized and decentralized control are widely used in the control of microgrids [9]. This control method consists of primary, secondary, and tertiary control levels operating in different time periods [9][10][11]. The primary controller operates locally to provide stable energy generation of sources and it ensures proportional sharing of power between sources [12,13].…”

mentioning

confidence: 99%

“…Therefore, secondary controller is used to eliminate these deviations [4]. The tertiary controller, which includes optimization and decision-making processes, enables the microgrid for more intelligent and efficient operation [11].…”

mentioning

confidence: 99%

“…In order to prevent the current sharing error between the sources during this operation, a current regulation loop is used [2,20]. In addition, this control loop provides synchronization between the microgrid and the grid in grid-connected mode [10,11]. Thus, microgrids can smoothly switch from island mode to grid-connected mode [22].…”

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confidence: 99%

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Event‐triggered distributed secondary control for enhancing efficiency, reliability and communication in island mode DC microgrids

Irmak,

Kabalcı,

Calpbinici

2023

IET Renewable Power Gen

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Although distributed secondary control helps control microgrids, it can provide insufficient performance in some cases where the system includes both renewable energy sources (RESs) and energy storage systems (ESSs). Therefore, an improved distributed secondary control structure is proposed in this study to improve efficiency and reliability in island mode DC microgrids that include RESs and ESSs. In order to regulate the power flow in accordance with the real time generation of the sources, maximum power calculation algorithms have been created within the secondary control levels of the PV and wind controllers. Furthermore, a fuzzy logic‐based energy management system has been designed in the secondary control of the battery controller to manage the power flow of the whole system considering the battery charge states and the total power generated by RESs. The distributed secondary control operates in event‐triggered mode to reduce the communication burdens. To avoid zeno behavior, event‐triggered control is designed based on sampled data. The proposed control scheme has been tested in Simulink environment and its stability is verified using Lyapunov's stability criteria. Results show that the power demand is successfully provided proportionally among the RESs and the communication burden is reduced considerably.

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ESOGI-Based Virtual Impedance Control Scheme with Performance Improvement for Droop-Operated Three-Phase VSIs in Islanded AC Microgrid

Hammouda,

Bradai,

Kherbachi

et al. 2023

2023 1st International Conference on Renewable Solutions for Ecosystems: Towards a Sustainable Energy Transition (ICRSEtoSET)

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A Multiobjective Secondary Control Approach for Optimal Design of DG Droop Characteristic and Control Mode for Autonomous Microgrids

Cited by 4 publications

References 40 publications

Research on Multi-Energy Integrated Ship Energy Management System Based on Hierarchical Control Collaborative Optimization Strategy

Research on Multi-Energy Integrated Ship Energy Management System Based on Hierarchical Control Collaborative Optimization Strategy

Event‐triggered distributed secondary control for enhancing efficiency, reliability and communication in island mode DC microgrids

ESOGI-Based Virtual Impedance Control Scheme with Performance Improvement for Droop-Operated Three-Phase VSIs in Islanded AC Microgrid

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