Sökning: "power resources"

Visar resultat 16 - 20 av 698 avhandlingar innehållade orden power resources.

  1. 16. Writing History in a Propaganda Institute : Political Power and Network Dynamics in Communist Romania

    Författare :Francesco Zavatti; Per Bolin; Heiko Droste; Kim Salomon; Södertörns högskola; []
    Nyckelord :HUMANIORA; HUMANITIES; historiography; history-writing; Romania; history and power; sovereignty; communism; national-communism; resources; narrative canon; networking; Historical Studies; Historiska studier; Östersjö- och Östeuropaforskning; Baltic and East European studies;

    Sammanfattning : In 1990, the Institute for Historical and Socio-Political Studies of the Central Committee of the Romanian Communist Party was closed, since the Party was dissolved by the Romanian Revolution. Similar institutions had existed in all countries belonging to the Soviet bloc. LÄS MER

  3. 17. Variability and variation management in a renewable electricity system -large-scale wind- and solar power deployment in Europe

    Författare :Lina Reichenberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; marginal cost of electricity; VRE; variability smoothing; solar power; power systems; renewable energy; wind power; energy systems modelling;

    Sammanfattning : The large-scale deployment of wind and solar power poses challenges to the electricity system by introducing variability on the generation side. To handle these variations, variation management strategies can be employed to ensure that generation meets demand. LÄS MER

  4. 18. Wind power wake modelling : Development and application of an actuator disc method for industrial utilization

    Författare :Nikolaos Simisiroglou; Stefan Ivanell; Thorsten Lutz; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wind power; Offshore wind farm; Wakes; Actuator Disc Method ACD ; Computational Fluid Dynamics CFD ; Reynolds Average Navier–Stokes RANS ; WindSim; PHOENICS;

    Sammanfattning : As a wind turbine extracts energy from the wind it creates a region downstream where the wind velocity is decreased and the urbulence intensity is increased, this region is commonly called the wake region. Today’s wind farms include a large number of wind turbines position in tight layouts. LÄS MER

  5. 19. Fundamental Control Performance Limitations for Interarea Oscillation Damping and Frequency Stability

    Författare :Joakim Björk; Karl H. Johansson; Lennart Harnefors; Joe H. Chow; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power system control; HVDC transmission control; interarea oscillations; power oscillation damping; small-signal stability; fundamental control limitations; frequency stability; hydro power; wind power; non-minimum phase; zero dynamics; eigenvalue analysis; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : With the transition towards renewable energy and the deregulation of the electricity markets, the power system is changing. Growing electricity demand and more intermittent power production increase the need for transfer capacity. Lower inertia levels due to a higher share of renewables increase the need for fast frequency reserves (FFR). LÄS MER

  7. 20. Power from Below? : The Impact of Protests and Lobbying on School Closures in Sweden

    Författare :Jonas Larsson Taghizadeh; Katrin Uba; Anders Lindbom; Peter Esaiasson; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; school closure; protest; lobbying; interest groups; social movements; welfare retrenchment; political parties; skolnedläggning; protest; lobbying; lokalpolitik; intressegrupper; sociala rörelser; välfärdsstat; Statskunskap; Political Science;

    Sammanfattning : In recent decades, there has been a considerable expansion of citizen participation in protests and voluntary advocacy groups. To analyze this development, the social movement literature and the interest group literature have emerged. LÄS MER