Sökning: "Kaplan unit"

Hittade 3 avhandlingar innehållade orden Kaplan unit.

  1. 1. Grid frequency stability from a hydropower perspective

    Författare :Elin Dahlborg; Per Norrlund; Urban Lundin; Linn Saarinen; Katherine Elkington; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Frequency control; frequency stability; grid codes; hydropower; inertia; Kaplan unit; model validation; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Sammanfattning : Many AC grids suffer from decreased frequency stability due to less system inertia. This has increased the risk of large-scale blackouts. This thesis and its papers address the frequency stability problem from a hydropower perspective.Grid frequency stability assessments often require accurate system inertia estimates. LÄS MER

  3. 2. Vibrant bodies of swirling flow : On the limits of mechanical power transformation

    Författare :Ida Jansson; Don-Hyun Kim; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : This thesis pinpoints the intertwined nature of inertia. A vibrant body of a swirling flow is neither just a flow nor a body. It is both. LÄS MER

  4. 3. Aspects on advanced procedures during endoscopic retrograde cholangiopancreatography (ERCP) for complex hepatobiliary disorders

    Författare :Jeanne Adéle Lübbe; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: The rapid development in endoscopic technology and associated skills has led to an increase in more advanced procedures being performed during endoscopic retrograde cholangiopancreatography (ERCP). Knowledge is limited regarding clinical value, integration, and outcomes for single operator cholangiopancreatoscopy (SOCP) and endoscopic intervention in the different Bismuth-Corlette (B-C) locations in the hepatic hilum. LÄS MER