Sökning: "grid generation"

Visar resultat 16 - 20 av 155 avhandlingar innehållade orden grid generation.

  1. 16. Micro-grids supplied by renewable energy : Improving technical and social feasibility

    Författare :Caroline Bastholm; Ewa Wäckelgård; Annette Henning; Frank Fiedler; Kirsten Ulsrud; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rural electrification; Electricity access; Decentralized; Off-grid; Photovoltacs; PV-hybrid; Micro-grid; Multi-disciplinary; Sociotechnical; Engineering Science; Teknisk fysik; Energy and Built Environments;

    Sammanfattning : Universal access to electricity stands high on the global agenda and is regarded as essential for positive development in sectors such as health care, education, poverty reduction, food production and climate change. Decentralized, off-grid electrification is deemed an important complement to centralized grid extension. LÄS MER

  3. 17. Towards Accurate Numerical Methods for Ship Flows on Composite Overlapping Grids

    Författare :Lars Carlsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; boundary layer; wake; incompressible flow; Navier-Stokes; composite overlapping grids; grid generation; ship flow; parallel computing; alternating-direction implicit; line-implicit;

    Sammanfattning : Numerical methods are presented that are designed to make accurate ship-flow computations more feasible. One method concerns the automatic generation of high-quality computational grids. It treats the grids as competing individuals in a population, where an individual's fitness is based on a measure of grid quality. LÄS MER

  4. 18. Self-Consumption of Photovoltaic Electricity in Residential Buildings

    Författare :Rasmus Luthander; Joakim Widén; Joakim Munkhammar; Ewa Wäckelgård; Bernhard Wille-Haussmann; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photovoltaics; Solar energy; Self-consumption; Grid integration; Distributed generation; Energy storage; Curtailment; Power system; Engineering Science; Teknisk fysik;

    Sammanfattning : Worldwide installations of photovoltaics (PV) have increased rapidly due to national subsidies and decreasing prices. One important market segment is building-applied PV systems, for which the generated electricity can be self-consumed. LÄS MER

  5. 19. Numerical computation of ship stern/propeller flow

    Författare :Daohua Zhang; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lifting-line theory; Body-fitted coordinate system; viscous flow; Reynolds-Avraged NAvier-Stokes equations; stern flow; propeller; turbulence model; grid generation; propeller-hull interaction; body-force; numerical calculation;

    Sammanfattning : .... LÄS MER

  7. 20. Impact of Economic Regulation on Distributed Generation Integration in Electricity Distribution Grids

    Författare :Angela Picciariello; Lennart Söder; Karin Alvehag; Gert Brunekreeft; KTH; []
    Nyckelord :Distributed generation; distribution economic regulation; regulatory impact; distribution tariff design; cost allocation methodologies; cross subsidies; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Energy policies in favor of a larger adoption of renewable energy sources for electricity production purposes and the significant progress of several renewable technologies are among the main drivers behind an increasing integration of distributed generation (DG) in distribution networks.DG affects distribution network planning and operation and, consequently, higher or lower network costs than in a traditional passive network scenario arise. LÄS MER