Unbalanced Current Reduction Method of Microgrid Based on Power Conversion System Operation

Shin, Hyun Jo; Chae, Sang Heon; Kim, Eel-Hwan

doi:10.3390/en14133862

Cited by 5 publications

(5 citation statements)

References 32 publications

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“…Furthermore, BESS's optimal planning and sizing for frequency control in power grids have been widely considered when penetrating renewable RESs and the grid [6]. Integrating the BESS into the microgrid can deliver main and auxiliary services for reliable and efficient power flow control [91]. In another study, ref.…”

Section: Besss For Power Smoothingmentioning

confidence: 99%

Battery Storage Use in the Value Chain of Power Systems

Ratshitanga,

Ayeleso,

Krishnamurthy

et al. 2024

Energies

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In recent years, energy challenges such as grid congestion and imbalances have emerged from conventional electric grids. Furthermore, the unpredictable nature of these systems poses many challenges in meeting various users’ demands. The Battery Energy Storage System is a potential key for grid instability with improved power quality. The present study investigates the global trend towards integrating battery technology as an energy storage system with renewable energy production and utility grid systems. An extensive review of battery systems such as Lithium-Ion, Lead–Acid, Zinc–Bromide, Nickel–Cadmium, Sodium–Sulphur, and the Vanadium redox flow battery is conducted. Furthermore, a comparative analysis of their working principles, control strategies, optimizations, and technical characteristics is presented. The review findings show that Lead–Acid, Lithium-Ion, Sodium-based, and flow redox batteries have seen increased breakthroughs in the energy storage market. Furthermore, the use of the BESS as an ancillary service and control technique enhances the performance of microgrids and utility grid systems. These control techniques provide potential solutions such as peak load shaving, the smoothing of photovoltaic ramp rates, voltage fluctuation reduction, a large grid, power supply backup, microgrids, renewable energy sources time shift, spinning reserve for industrial consumers, and frequency regulation. Conclusively, a cost summary of the various battery technologies is presented.

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Section: Besss For Power Smoothingmentioning

confidence: 99%

Battery Storage Use in the Value Chain of Power Systems

Ratshitanga,

Ayeleso,

Krishnamurthy

et al. 2024

Energies

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show abstract

“…To calculate current references, any four out of six expressions ( 14)- (19), can be used. Still, the most meaningful sets of equations are ( 14)-( 17) and ( 14), ( 15), (18), and (19).…”

Section: Power and Current Production Maximization And Management Schemementioning

confidence: 99%

“…To calculate current references, any four out of six expressions ( 14)- (19), can be used. Still, the most meaningful sets of equations are ( 14)-( 17) and ( 14), ( 15), (18), and (19). The first enables control over average active or average reactive power production and enables the complete elimination of active power oscillations.…”

Section: Power and Current Production Maximization And Management Schemementioning

confidence: 99%

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Mitigation of Voltage and Frequency Excursions in Low-Inertia Microgrids

et al. 2023

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Power systems proliferated by distributed generation sources are becoming increasingly prone to frequency and voltage disturbances. These problems are exacerbated in microgrids since they have fewer intrinsic disturbance-rejecting measures and features. To increase the reliability and stability of emerging power systems, the advanced control structures of the distributed generation sources based on power electronics devices must be deployed during suboptimal operating conditions. The aggravating circumstance is that both voltage and frequency excursion can be transient and long-lasting and consequently can occur simultaneously. The algorithm proposed in this paper integrates voltage support (nominal voltage restoration) and inertia emulation features with the comprehensive current references management scheme, thus securing improved grid operating conditions during several different faults and occurrences. The control algorithm is developed and tested in the context of a small microgrid, but it can be applied with minimal alterations in traditional grids, also. To prove that it is possible to decrease simultaneously voltage unbalances and frequency deviations, a test microgrid consisting of a synchronous generator, photovoltaic system, battery storage system, and controllable balanced and unbalanced loads was developed in a hardware-in-the-loop environment.

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“…Reference [11] discussed different control parameters that were used to estimate the grid impedance, while reference [10] estimated the system parameters for balancing the system. Many methods were used for unbalanced current compensation or reduction, and these are discussed in [16][17][18][19], and different control cases under unbalanced load are discussed in [20,21].…”

Section: Introductionmentioning

confidence: 99%

Three-Phase Grid-Connected Inverter Power Control under Unbalanced Grid Conditions Using a Time-Domain Symmetrical Components Extraction Method

et al. 2022

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Presented in this paper is a method of bidirectional real and reactive power control of a three-phase grid-connected inverter under unbalanced grid situations. Unbalanced three-phase load and unbalanced grid impedance are illustrations of unbalanced grid issues that have been investigated. As a result, both grid currents and point-of-common-coupling (PCC) voltages will be unbalanced. The real and reactive power that is delivered to the grid oscillates by a significant amount in these unbalanced conditions. A time-domain symmetrical components extraction approach is used to calculate the inverter’s reference currents from the negative- and zero-sequence components of the measured currents. The suggested approach corrects unbalanced grid currents and unbalanced PCC voltages, and provides the desired real and reactive power to the grid when unbalanced situations exist. As a consequence, power oscillations will be eliminated, and power control will be possible. The suggested method’s performance is supported by simulation, and various experimental results are obtained utilizing the dSPACE DS1202 real-time interface platform.

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Unbalanced Current Reduction Method of Microgrid Based on Power Conversion System Operation

Cited by 5 publications

References 32 publications

Battery Storage Use in the Value Chain of Power Systems

Battery Storage Use in the Value Chain of Power Systems

Mitigation of Voltage and Frequency Excursions in Low-Inertia Microgrids

Three-Phase Grid-Connected Inverter Power Control under Unbalanced Grid Conditions Using a Time-Domain Symmetrical Components Extraction Method

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