Sökning: "hydropower"

Visar resultat 11 - 15 av 180 avhandlingar innehållade ordet hydropower.

  1. 11. Time-accurate Turbulence Modeling of Swirling Flow for Hydropower Application

    Författare :Ardalan Javadi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hybrid RANS-LES; Swirling Flow; DES; Vortex Breakdown; Turbulence Modeling; Hydropower; LES;

    Sammanfattning : Hydraulic turbomachines have played a prominent role in the procurement of renewableenergy for more than a century. Embedded in the context of general technological progress,their design for efficiency and reliability has reached an outstanding level of quality. LÄS MER

  3. 12. Weekly planning of hydropower in systems with large volumes of varying power generation

    Författare :Charlotta Ahlfors; Mikael Amelin; Magnus Brolin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydropower; literature review; weekly planning; low carbon operation; maintenance scheduling; preventive maintenance; mixed integer linear programming; dynamic programming; cascaded river systems; value of stored water; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Hydropower is the world’s largest source of renewable electricity generation. Hydropower plants with reservoirs provide flexibility to the power systems. LÄS MER

  4. 13. Taming exotic beauties : Swedish hydropower constructions in Tanzania in the era of development assistance, 1960s-1990s

    Författare :May-Britt Öhman; Arne Kaijser; Kjell Havnevik; KTH; []
    Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; History of science and technology; Hydropower; Electrification; Postcolonial Theory; Feminist Theory; Science and Technology Studies; Colonialism; Development assistance; Africa; Tanzania; Southern Highlands; Great Ruaha River; Vetenskapshistoria; Teknikhistori; Vattenkraftsutbyggnad – Tanzania; Kolonialism – Tanzania; Utvecklingsbistånd – Tanzania; History of technology and industry; Teknik- och industrihistoria; Historia;

    Sammanfattning : This study analyses the history of a large hydroelectric scheme – the Great Ruaha power project in Tanzania. The objective is to establish why and how this specific scheme came about, and as part of this to identify the key actors involved in the decision-making process, including the ideological contexts within which they acted. LÄS MER

  5. 14. Hydropower generator and power system interaction

    Författare :Johan Bladh; Urban Lundin; Rafael Escarela-Perez; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Amortisseur windings; applied voltage test; automatic voltage regulators; damper windings; damping torque; empirical modelling; equivalent circuits; excitation control; finite element method; hydropower generators; power system restoration; power system stability; synchronous machines; self excitation; shaft torque amplification; short circuit test; single machine infinite bus; slip test; standstill frequency response test; subsynchronous oscillations; synchronising torque; synchronous generators; torsional interaction.; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : After decades of routine operation, the hydropower industry faces new challenges. Large-scale integration of other renewable sources of generation in the power system accentuates the role of hydropower as a regulating resource. LÄS MER

  7. 15. Issues of making hydropower environmentally sustainable

    Författare :Inger Poveda Björklund; KTH; []
    Nyckelord :Hydropower planning; Environmental impact assessment; Integration of EIA finding; Legal framework for EIA; Internalisation;

    Sammanfattning : .... LÄS MER