Dual‐loop control strategy applied to PV/battery‐based islanded DC microgrids for swarm electrification of developing regions

Nasir, Mashood; Khan, Hassan A.; Niazi, Kamran Ali Khan; Jin, Zheming; Guerrero, Josep M.

doi:10.1049/joe.2018.9274

Cited by 18 publications

(21 citation statements)

References 20 publications

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“…The proposed solar integration scheme allows higher utilization of the solar resource, and therefore, the power demand from the grid is the lowest in the optimized case. This trend is visible during the sunlight hours (8)(9)(10)(11)(12)(13)(14)(15)(16) as the optimized methodology allows optimal sharing of the power from solar, battery, and grid to provide for the load, satisfying the main objective of the system that is the minimization of the total costs depend on the units purchased from the grid.…”

Section: Resultsmentioning

confidence: 99%

“…in home-based DC distribution, 8 solar PV intake, 9 and perceptiveness towards rural electrification has proved to be a transformative step in the future of solar PV. [10][11][12][13][14][15][16] Developed countries around the world have incentivized domestic solar installation through favorable policies such as attractive solar feed-in-tariff (FiT), 17,18 green certifications, and tax credits. to lower their energy dependence on fossil fuels and to promote solar energy, [19][20][21] encouraging domestic consumers to invest in roof top PV electricity generation with bidirectional energy transactions with utility grids.…”

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confidence: 99%

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Optimal power dispatch in solar‐assisted uninterruptible power supply systems

Siraj

Awais

Khan

et al. 2019

Int Trans Electr Energ Syst

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Summary Many countries in the developing world undergo regular power outages (scheduled and nonscheduled) due to lack of sufficient generation capability or transmission and distribution bottlenecks. Therefore, uninterruptible power supply (UPS) systems are commonly installed to critical power loads during daily power outages. While the integration of solar photovoltaic (PV) with these UPSs has seen rapid growth in recent years, their incorporation in conventional topologies is highly suboptimal. Therefore, in this work, we formulate a mathematical framework for optimal solar PV integration with domestic UPS systems for minimum cost solution incorporating all relevant system constraints and requisite system losses. We also propose and develop a retrofitting technological solution to integrate solar PV with typical UPS systems for optimal system operation. Results show that the proposed methodology and system implementation can achieve cost savings of up to 40.6% compared with conventional UPS system (without solar) in typical scenarios. In addition, with the proposed optimized utilization of PV, the grid utilization is decreased by 75% compared with the conventional case where UPS is integrated with solar using standard maximum power point charge controllers. This work is therefore highly useful for many developing regions with intermittent grids.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Optimal power dispatch in solar‐assisted uninterruptible power supply systems

Siraj

Awais

Khan

et al. 2019

Int Trans Electr Energ Syst

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“…For instance, Madduri et al [19] proposed a scalable architecture using hybrid topology with PV generation at the central location, while battery storage resources are distributed across the village household. Similarly, Nasir et al proposed a highly distributed architecture with neighborhood-level power-sharing capability implemented with decentralized control [20][21][22]. The previous works mainly focus on design, analysis, and optimization of individual architectures without considering the impact of architectural variations on system sizing and losses [1,[20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Rural Electrification Through Solar PV DC Microgrids—An Architecture-Based Assessment

et al. 2020

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Solar photovoltaic (PV) direct current (DC) microgrids have gained significant popularity during the last decade for low cost and sustainable rural electrification. Various system architectures have been practically deployed, however, their assessment concerning system sizing, losses, and operational efficiency is not readily available in the literature. Therefore, in this research work, a mathematical framework for the comparative analysis of various architectures of solar photovoltaic-based DC microgrids for rural applications is presented. The compared architectures mainly include (a) central generation and central storage architecture, (b) central generation and distributed storage architecture, (c) distributed generation and central storage architecture, and (d) distributed generation and distributed storage architecture. Each architecture is evaluated for losses, including distribution losses and power electronic conversion losses, for typical power delivery from source end to the load end in the custom village settings. Newton–Raphson method modified for DC power flow was used for distribution loss analysis, while power electronic converter loss modeling along with the Matlab curve-fitting tool was used for the evaluation of power electronic losses. Based upon the loss analysis, a framework for DC microgrid components (PV and battery) sizing was presented and also applied to the various architectures under consideration. The case study results show that distributed generation and distributed storage architecture with typical usage diversity of 40% is the most feasible architecture from both system sizing and operational cost perspectives and is 13% more efficient from central generation and central storage architecture for a typical village of 40 houses. The presented framework and the analysis results will be useful in selecting an optimal DC microgrid architecture for future rural electrification implementations.

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“…The shifting trend towards LED lights, electronics, mobile phone and laptop chargers in the modern home adds to the DC side, strengthening it further as compared to AC [8]. Moreover, lower line losses, lower voltage dips and simplified control associated with the low voltage DC distribution (LVDC) systems have made it an optimal choice for low-cost rural electrification [9][10][11][12][13][14]. Figure 1 depicts the penetration of DC in the power system.…”

Section: Introductionmentioning

confidence: 99%

Efficiency Comparison of AC and DC Distribution Networks for Modern Residential Localities

et al. 2019

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The paper investigates the system efficiency for power distribution in residential localities considering daily load variations. Relevant system modeling is presented. A mathematical model is devised, which is based on the data from the Energy Information Administration (EIA), USA, for analysis. The results reveal that the DC distribution system can present an equivalent or even better efficiency compared to the AC distribution network with an efficiency advantage of 2.3%, averaged over a day. Furthermore, the distribution systems are compared under various capacities of solar PV accounting for the effect of variation in solar irradiation over time.

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Dual‐loop control strategy applied to PV/battery‐based islanded DC microgrids for swarm electrification of developing regions

Cited by 18 publications

References 20 publications

Optimal power dispatch in solar‐assisted uninterruptible power supply systems

Optimal power dispatch in solar‐assisted uninterruptible power supply systems

Sustainable Rural Electrification Through Solar PV DC Microgrids—An Architecture-Based Assessment

Efficiency Comparison of AC and DC Distribution Networks for Modern Residential Localities

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