Fault Ride-Through Analysis of Current- and Voltage-Source Models of Grid Supporting Inverter-Based Microgrid

Buraimoh, Elutunji; Davidson, Innocent E.

doi:10.1109/icjece.2020.3035036

Cited by 16 publications

(7 citation statements)

References 28 publications

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“…The traditional droop control regulates powersharing with inductive output impedances. Equations ( 1) and ( 2) for both active and reactive powers, in line with two other crucial assumptions, serve as the foundation for the development of this method [23]:…”

Section: Droop Controlmentioning

confidence: 99%

“…Because of its numerous applications, the value of this impedance must be determined according to its intended function. The values of virtual impedances are researched in [23] in order to maximize the microgrid's performance. The virtual impedances aid the regulation of the voltage under particular limits, share reactive power effectively, dampen the system, and decouple active and reactive power.…”

Section: Complex Virtual Impedance Techniquementioning

confidence: 99%

“…The virtual impedances have been utilized in converter control for harmonic voltage correction and increased stability and power-sharing applications [22]. The values of virtual impedances were researched by [23] to maximize the microgrid's performance. The virtual impedances can assist in keeping the voltage under particular limits, share reactive power effectively, dampen the system, and decouple active and reactive power.…”

Section: Introductionmentioning

confidence: 99%

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Decentralized Virtual Impedance- Conventional Droop Control for Power Sharing for Inverter-Based Distributed Energy Resources of a Microgrid

et al. 2022

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The work presents the power-sharing in a standalone low voltage AC microgrid consisting of three parallel grid supporting inverters using a virtual impedance-based droop system. Typically, isolated microgrids suffer unique challenges regarding voltage, current, frequency regulation, power flow control, and power-sharing due to the absence of a stiff AC grid source. This work investigated the power flow and sharing technical challenges using three inverter-based distributed energy sources, three static loads, and one dynamic load. These distributed energy sources are interconnected with the loads using low voltage line impedance within the microgrid to implement the uneven power distribution. Furthermore, a distributed grid supporting control utilizing virtual impedance is proposed in this work to improve power-sharing. The microgrid model is developed with the MATLAB Simulink environment and validated using the Opal RT OP4510 simulator. The proposed technique ensured improved power-sharing and mitigated the effect of voltage drops introduced through a virtual impedance using combined positive and negative virtual.

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Section: Droop Controlmentioning

confidence: 99%

Section: Complex Virtual Impedance Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Decentralized Virtual Impedance- Conventional Droop Control for Power Sharing for Inverter-Based Distributed Energy Resources of a Microgrid

et al. 2022

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“…What' more, when encountering disturbances, prosumers can switch from normal grid-connected mode to grid-fluctuation mode in the extreme case. To solve this problem, other auxiliary converters for interlinking the DC and AC network and power improvement should work with different control strategies in the regulation of the prosumer (Buraimoh and Davidson, 2021). Then, the mode switch of the DGs in the prosumer is needed, which increases the difficulty for the coordinated operation of the prosumer .…”

Section: Introductionmentioning

confidence: 99%

The coordinated operation strategy of multi-type power generations in different modes in prosumer with high renewables

Meng²,

Su³

2023

Front. Energy Res.

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The renewable energy with distributed generation is widely used because of the cleanliness and sustainability. However, when high renewables connect to the grid, the randomness and intermittent of the renewable energy will deteriorate the performance. As the important interface between distributed generations and power grid, the prosumer can contribute to the improvement of the renewable energy penetration if stable and reliable operation of the power supply is realized. The prosumer has multi-type generations, loads and auxiliary converters, where the characteristics interact each other. Moreover, due to the complicated grid states, the prosumer may operate in different conditions. Therefore, the research on the coordinated operation control strategy of the multiple electrical facilities is necessary in the prosumer with high renewables. In this paper, the AC/DC hybrid prosumer is established with multi-type distributed generations, loads and auxiliary converters. The prosumer can operate in normal grid-connected mode and grid-fluctuation mode. In different modes, the cooperation control of the power converter in the prosumer is proposed, which changes according to the grid demands. When over-limited grid voltage and frequency fluctuation are detected in the point of common coupling, the prosumer can switch from normal grid-connected mode to grid-fluctuation mode to provide voltage and frequency support. Finally, the simulation results based on Matlab/Simulink is employed to verify the effectiveness of the proposed control strategy.

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“…The FCL addresses the over-current when utilized between the microgrid and main grid as in reference [35][36][37][38]. This shields the grid-tied inverter from the AC grid overcurrent, thereby improving the FRT under faults.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Double Stage Photovoltaic Inverter System with Fast Delayed Signal Cancellation for Fault Ride-Through Control Application in Microgrids

Buraimoh

Davidson

2022

Energies

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This research presents a secondary control for a grid-supporting microgrid with photovoltaics sources to guarantee grid code compliance and ancillary services. The secondary control accomplishes the fault ride-through, which implements a delayed signal cancellation (DSC) algorithm for negative sequence detection. Without mode switching, the proposed control strategy meets grid code requirements and ensures voltage regulation at the secondary level, which is active and more salient throughout the transient period of host grid disturbances. This control also ensures a constant supply of the microgrid’s sensitive local load while adhering to grid code requirements. Similarly, active power injection into the main grid is limited by progressively altering the MPPT operating point dependent on the depth of voltage sag to optimize reactive power injection to sustain grid voltage sag. The recommended secondary control is triggered by utilizing the DSC process’s detection algorithm to identify the occurrence of a fault in a tiny fraction of a half-cycle in a grid fault. Consequently, while satisfying microgrid load needs, the devised technique guaranteed that increases in DC-link voltage and AC grid current were controlled. MATLAB Simscape ElectricalTM and OPAL-RT Lab are used to do time-domain simulations of the model using the recommended secondary control systems.

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Fault Ride-Through Analysis of Current- and Voltage-Source Models of Grid Supporting Inverter-Based Microgrid

Cited by 16 publications

References 28 publications

Decentralized Virtual Impedance- Conventional Droop Control for Power Sharing for Inverter-Based Distributed Energy Resources of a Microgrid

Decentralized Virtual Impedance- Conventional Droop Control for Power Sharing for Inverter-Based Distributed Energy Resources of a Microgrid

The coordinated operation strategy of multi-type power generations in different modes in prosumer with high renewables

Modeling of Double Stage Photovoltaic Inverter System with Fast Delayed Signal Cancellation for Fault Ride-Through Control Application in Microgrids

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