Adjustment of available and needed energy and necessary additional functionalities in the distribution grid, caused by the energy transition, can better be solved by DC distribution grids

Niehoff, Ronald; Kuipers, Freddie; Stokman, Harry

doi:10.1049/oap-cired.2017.0998

Cited by 2 publications

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“…In recent years, direct current (DC) power distribution networks have received great attention because they present the benefits of high power capacity, low distribution line loss, user-side availability, and good transient stability. The microgrid concept has also been developed in electric power systems with DC power distribution [1][2][3]. Furthermore, photovoltaic power generation and wind power generation have become widespread as renewable energy resources.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of polymer-ablation arc with polyacrylic acid + H₂O mixture

Shibayama¹,

Tanaka²,

Nakano³

et al. 2021

J. Phys. D: Appl. Phys.

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As described in this paper, we proposed the adoption of polyacrylic acid (PAA) with H2O, which becomes PAA + H2O mixture gel, as an ablation medium for arc quenching in a low-voltage DC circuit breaker. It is well known that H2O is a highly arc-quenching medium, but it has been difficult to use H2O in liquid phase directly as an arc-quenching medium. The arc performance of PAA + H2O mixture gel was studied using numerical and experimental approaches. Numerical thermofluid simulation was conducted to obtain the arc temperature and gas flow distribution at different H2O mixing ratios in PAA + H2O gel. To consider ablation of PAA + H2O gel, a method of alternately arranging PAA and H2O in the ablation wall was also proposed. Calculation results demonstrate that increasing the H2O mixing ratio in PAA + H2O mixture gel makes the arc narrower in the temperature and electrical conductivity distributions. The experimentally obtained results also indicate that arcs confined in PAA + H2O mixture gel with higher H2O mixture become narrower than those in PAA or other materials. Moreover, arcs confined by PAA + H2O mixture gel with higher H2O mixing ratio enhance the arc resistance rapidly. The results suggest that PAA + H2O mixture gel can have higher arc-quenching performance than pure polymers.

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Section: Introductionmentioning

confidence: 99%

Numerical study of polymer-ablation arc with polyacrylic acid + H₂O mixture

Shibayama¹,

Tanaka²,

Nakano³

et al. 2021

J. Phys. D: Appl. Phys.

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“…2. The low-voltage (LV) electronics such as laptops, TVs, LED lighting, and others can be efficiently supplied from RDCμG by USB-C compliant wall sockets [20]. The study [21] demonstrates that dc distribution can increase building energy efficiency by up to 18.5%.…”

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confidence: 97%

DC Integration of Residential Photovoltaic Systems: A Survey

et al. 2022

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PV systems are penetrating the energy generation market rapidly. PV system output strongly depends on environmental conditions. As a result, the utilization of power electronic converters is mandatory. On the other hand, most modern loads, from small to big ones, are based on dc, similar to the renewable sources generating dc. Hence, wide adoption of residential dc microgrids (RDCμGs) based on PV energy would be a trend soon, following modern developments in energy-efficient buildings. This paper targets power converters for the integration of PV systems into RDCμGs. It considers two main classes: high stepup converters for PV module-level, parallel optimizer, applications, and non-isolated buck-boost converters for the PV string, series optimizer, applications. Due to the importance of the PV topic, a significant number of topologies have been introduced in the literature. However, not all topologies attracted the interest of the industry. This review paper considers PV converters used in industry or demonstrated in academia at a high technology readiness level with comprehensive experimental justification. This allows us to focus this review on the most valuable solutions and to provide a guide for both industry and academic readers. In the end, future trends in industrial PV systems and power converters are discussed.

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Adjustment of available and needed energy and necessary additional functionalities in the distribution grid, caused by the energy transition, can better be solved by DC distribution grids

Cited by 2 publications

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Numerical study of polymer-ablation arc with polyacrylic acid + H₂O mixture

Numerical study of polymer-ablation arc with polyacrylic acid + H₂O mixture

DC Integration of Residential Photovoltaic Systems: A Survey

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Adjustment of available and needed energy and necessary additional functionalities in the distribution grid, caused by the energy transition, can better be solved by DC distribution grids

Cited by 2 publications

References 0 publications

Numerical study of polymer-ablation arc with polyacrylic acid + H2O mixture

Numerical study of polymer-ablation arc with polyacrylic acid + H2O mixture

DC Integration of Residential Photovoltaic Systems: A Survey

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Numerical study of polymer-ablation arc with polyacrylic acid + H₂O mixture

Numerical study of polymer-ablation arc with polyacrylic acid + H₂O mixture