Hierarchical voltage imbalance control for single‐/three‐phase hybrid multimicrogrid

Wang, Can; Yang, Ping; Chen, Ran; Cheng, Sijing; Tian, Tian; Li, Xianghe

doi:10.1049/iet-gtd.2019.0014

Cited by 9 publications

(3 citation statements)

References 35 publications

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“…In a hierarchical voltage imbalance control for a single-/three-phase hybrid multimicrogrid, researchers have shown that multimicrogrids composed of different distributed energy resources (DERs) such as PV systems and storage can be controlled by a modified traditional droop control and PQ controller as well. However, the type of PQ controller was not specified and did not mention an issue regarding storage [47,48]. Moreover, the fault ride through and SCADA viewer software can be used in multimicrogrids as long as master and slave micro sources are specified with different outputs and different controllers.…”

Section: Fault Ride Through (Frt) Capability In Wind Farmsmentioning

confidence: 99%

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

et al. 2020

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Faults in electrical networks are among the key factors and sources of network disturbances. Control and automation strategies are among the key fault clearing techniques responsible for the safe operation of the system. Several researchers have revealed various constraints of control and automation strategies such as a slow dynamic response, the inability to switch the network on and off remotely, a high fault clearing time and loss minimization. For a system with wind energy technologies, if the power flow of a wind turbine is perturbed by a fault, the intermediate circuit voltage between the machine side converter and line side converter will rise to unacceptably high values due to the accumulation of energy in the DC link capacitor. To overcome the aforementioned issues, this paper used MATLAB simulations and experiments to analyze and validate the results. The results revealed that fault ride through capability with Supervisory Control and Data Acquisition (SCADA) viewer software, Active Servo software and wind sim packages are more adaptable to the variations of voltage sag, voltage swell and wind speed and avoid loss of synchronism and improve power quality. Furthermore, for protection purposes, a DC chopper and a crowbar should be incorporated into the management of excess energy during faults and a ferrite device included for the reduction of the electromagnetic field.

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Section: Fault Ride Through (Frt) Capability In Wind Farmsmentioning

confidence: 99%

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

et al. 2020

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“…1,2 The DG is typically composed of single-phase photovoltaic arrangements and, when it is connected to the distribution systems as a microgrid, it may cause a significant increase in the level of imbalances on the electrical systems. 3 In the transmission scenario, faced with the growing demand for power globally, the number of substations has considerably increased, which in turn has extensively hindered the application of multiple transpositions. This technique is commonly used with the intent to avoid three-phase asymmetries along the system.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, emphasis is given to the fact that distributed generation (DG) presents itself as a potential source of imbalance on the network 1,2 . The DG is typically composed of single‐phase photovoltaic arrangements and, when it is connected to the distribution systems as a microgrid, it may cause a significant increase in the level of imbalances on the electrical systems 3 …”

Section: Introductionmentioning

confidence: 99%

A practical approach for determining voltage imbalance contributions from suppliers and consumers

Gregory

Santos

et al. 2020

Int Trans Electr Energ Syst

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Objective(s): I regards to the matter of determining voltage imbalance contributions on three-phase electric power systems, it is a fact that, except for the Superposition method, no procedure has proved to be trustworthy. However, the application of the Superposition method in the field may face some challenging aspects. In this perspective, this paper is aimed at proposing an innovative approach to overcome the challenges concerning the Superposition method application on actual grids. To achieve such a goal, a method based on a controlled state-change of the system, by connecting a known source of imbalances is proposed, which is here defined as the Single-phase Capacitor Switching method. Methods: In order to highlight the method effectiveness and feasibility, the approach is verified by means of computational and experimental investigations. These are carried out taking into account different operating conditions related to imbalance sources. Results: The Single-phase Capacitor Switching method has presented a good response in computational and experimental studies, since the results are in line with the expected physical behaviour in relation to the prevalent source of voltage imbalances. Conclusion: Therefore, the Single-phase Capacitor Switching method, along with the Superposition method, presents itself as promising for determining voltage imbalance contributions between the parts involved.

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H∞ control for switched IT2 fuzzy nonlinear systems with multiple time delays applied in hybrid grid‐connected generation

Sun

Zhang

Wang

et al. 2021

Applied Mathematics and Computation

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Hierarchical voltage imbalance control for single‐/three‐phase hybrid multimicrogrid

Cited by 9 publications

References 35 publications

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

Fault Ride through Capability Analysis (FRT) in Wind Power Plants with Doubly Fed Induction Generators for Smart Grid Technologies

A practical approach for determining voltage imbalance contributions from suppliers and consumers

H∞ control for switched IT2 fuzzy nonlinear systems with multiple time delays applied in hybrid grid‐connected generation

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