Effective power management scheme for PV‐Battery‐DG integrated standalone DC microgrid

Pannala, Sanjeev; Padhy, Narayana Prasad; Agarwal, Pramod

doi:10.1049/iet-epa.2020.0140

Cited by 9 publications

(6 citation statements)

References 39 publications

(56 reference statements)

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“…However, this integration has raised concerns regarding system stability, highlighting the necessity for enhanced management, control, monitoring, power electronics converters, and design approaches [2][3][4]. MGs can operate in two modes: isolated mode and grid-connected mode [5,6]. In the isolated mode of MGs, it is often necessary to implement advanced control techniques in order to handle sudden variations in load as well as ensure frequency regulation and stable performance [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Renewable energy is a promising solution, and with its increasing use, there have been efforts to incorporate DERs into a clean and intelligent energy distribution system. In electric grids with RESs, power electronic converters play a very important role [6,13]. There are various aspects to the optimization of MGs that include power electronic converters.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lagrange Multiplier-Based Optimization for Hybrid Energy Management System with Renewable Energy Sources and Electric Vehicles

Tran,

Ton-That,

Thao

2023

Electronics

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The issues of energy scarcity and environmental harm have become major priorities for both business and human progress. Hence, it is important and useful to focus on renewable energy research and efficient utilization of distributed energy sources (DERs). A microgrid (MG) is a self-managed system that encompasses these energy resources as well as interconnected consumers. It has the flexibility to function in both isolated and grid-connected configurations. This study aims to design an effective method of power management for a MG in the two operating modes. The proposed optimization model seeks to strike a balance between energy usage, protecting the life of batteries, and maximizing economic benefits for users in the MG, with consideration of the real-time electricity price and constraints of the power grid. Furthermore, in order to accurately account for the dynamic nature of not only the stationary battery banks used as the energy storage systems (ESS) but also the built-in batteries of electric vehicles (EVs), the model is presented as a multi-objective, multiparametric and constrained problem. The solution is proposed to be found using the Lagrange multiplier theory, which helps to achieve good performance with less computational burden. Lastly, simulation results from both the isolated and grid-connected modes also demonstrate the effectiveness of the designed method.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lagrange Multiplier-Based Optimization for Hybrid Energy Management System with Renewable Energy Sources and Electric Vehicles

Tran,

Ton-That,

Thao

2023

Electronics

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“…DCMG presents irreplaceable advantages over the conventional structure of power systems in terms of efficiency, cost, power management, and installation [1]. A DCMG comprises DC nanogrids (DCNGs), which is a combination of a generating unit, DC-DC converters, battery, and DC-loads [2,3]. Generation of power via photovoltaic (PV) system in the DCMG possesses unique importance regarding green energy and low maintenance cost.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a fault detection method for a PV‐fed DC‐microgrid with power control mechanism

Z̲ākir

Arshad

Sher

et al. 2022

IET Electric Power Appl

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This paper presents practical implementation of a fault detection, localisation, and categorisation (FDLC) method in PV‐fed DC‐microgrid (DCMG). The DCMG is implemented by utilising a group of two DC nanogrids (DCNG) that have power control mechanism (PCM). The FDLC uses a voltage calculating circuit comprising a single voltage sensor and diode network. Moreover, the architecture is based on six statements extracted from the investigation of line to line (L–L) and line to ground (L–G) faults at a DCNG of the cluster. The PCM in the proposed system utilises a power triggering circuit for effective power flow among the different units of the DCNG considering the load demands and the resource availability. Experimentation is carried out by creating L–L/L–G faults at different points in the DCMG. Detection, localisation, and classification of faults is performed by utilising the sensor's voltage and power of the individual DCNG. FDLC offers less computational burden, perform fast detection of fault, and is capable of distinguishing between the L–L/L–G faults and uniform irradiance and partial shading conditions in the PV‐array. The proposed FDLC technique and its six statements are verified through experimental results.

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“…However, the proposed strategy is not suitable for the interconnection of subgrids. A tie-line-based power management scheme for interconnected DCMGs is proposed in [28][29][30]. In this structure, the power flow among the DCMGs depends on the voltage droop characteristics of the DC buses.…”

Section: Introductionmentioning

confidence: 99%

A Fuzzy-Based Coordinated Power Management Strategy for Voltage Regulation and State-of-Charge Balancing in Multiple Subgrid-Based DC Microgrid

Panda

Bhaskar

Maity

2022

International Transactions on Electrical Energy Systems

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Multiple DC subgrids in close proximity can be connected to form a DC microgrid. The interconnected DC subgrids enhance reliability and efficient utilization of resources. In this paper, a novel coordinated power management strategy is proposed for interconnected subgrids of a DC microgrid. Each DC subgrid has PV and battery units. The proposed strategy is implemented on interlinking bidirectional converters (IBCs). The strategy considers the state-of-charge (SoC) and charging/discharging current of the batteries for SoC balancing-based power sharing through IBCs. A fuzzy logic controller is implemented to decide the amount of power flow through the IBCs from SoC and the charging/discharging current of battery units. Moreover, with the coordinated strategy, a high SoC battery takes more loads compared to a lower SoC battery. The proposed strategy supports fast charging and fast discharging of batteries depending on the SoC level. In addition, the coordinated strategy can seamlessly transfer the control of IBC from the power regulating mode to the voltage regulating mode without any additional control scheme during an outage of the battery unit. The feasibility of the proposed strategy is validated through simulation in MATLAB/Simulink and OPAL-RT real-time digital simulator.

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Effective power management scheme for PV‐Battery‐DG integrated standalone DC microgrid

Cited by 9 publications

References 39 publications

Lagrange Multiplier-Based Optimization for Hybrid Energy Management System with Renewable Energy Sources and Electric Vehicles

Lagrange Multiplier-Based Optimization for Hybrid Energy Management System with Renewable Energy Sources and Electric Vehicles

Design and implementation of a fault detection method for a PV‐fed DC‐microgrid with power control mechanism

A Fuzzy-Based Coordinated Power Management Strategy for Voltage Regulation and State-of-Charge Balancing in Multiple Subgrid-Based DC Microgrid

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