Search for dissertations about: "unit commitment"

Showing result 1 - 5 of 26 swedish dissertations containing the words unit commitment.

  2. 1. Unit Commitment : Computational Performance, System Representation and Wind Uncertainty Management

    Author : Germán Morales-España; Lennart Söder; Andres Ramos; Paulien M. Herder; Michel Rivier; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik; Mathematics; Matematik;

    Abstract : In recent years, high penetration of variable generating sources, such as wind power, has challenged independent system operators (ISO) in keeping a cheap and reliable power system operation. Any deviation between expected and real wind production must be absorbed by the power system resources (reserves), which must be available and ready to be deployed in real time. READ MORE

  4. 2. Power System Operation Planning and Wind Power Curtailment : Efficient Methods for Power System Scheduling and Integration Studies of Variable Renewable Energy

    Author : Elis Nycander; Lennart Söder; Mehrdad Ghandari; Robert Eriksson; Germán Morales-España; Benjamin Hobbs; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Variable renewable energy; wind power integration; production cost model; power-based unit commitment; wind power scenarios; Electrical Engineering; Elektro- och systemteknik;

    Abstract : To reduce carbon dioxide emissions, variable renewable energy (VRE) sources are replacing conventional fossil-based power plants for electricity generation. Due to the variability and uncertainty of weather dependent VRE sources, there can be situations when it is not possible to accommodate all the available VRE production, and VRE sources have to be curtailed. READ MORE

  5. 3. Party or patient? : Discursive practices relating to coercion in psychiatric and legal settings

    Author : Stefan Sjöström; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Psychiatry; Compulsory Care; Civil Commitment; Court Hearings; Discursive Practices; Discourse Analysis; Institutional Discourse; Re-contextualisation; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : The subject matter of this study is professional discourse concerning psychiatric assessments, particularly those relating to compulsory care. Discursive practices in two institutional settings are compared, namely a psychiatric clinic and an administrative court. READ MORE

  6. 4. On the Dynamics and Statics of Power System Operation : Optimal Utilization of FACTS Devicesand Management of Wind Power Uncertainty

    Author : Amin Nasri; Mehrdad Ghandhari; Zhang Xiao-Ping; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Trajectory sensitivity analysis TSA ; transient stability; small signal stability; flexible AC transmission system FACTS devices; critical clearing time CCT ; optimal power flow OPF ; network-constrained ac unit commitment ac-UC ; wind power uncertainty; wind power spillage; stochastic programming; Benders’ decomposition; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Nowadays, power systems are dealing with some new challenges raisedby the major changes that have been taken place since 80’s, e.g., deregu-lation in electricity markets, significant increase of electricity demands andmore recently large-scale integration of renewable energy resources such aswind power. READ MORE

  7. 5. Guided Internet-Based Cognitive Behaviour Therapy for Chronic Pain

    Author : Monica Buhrman; Gerhard Andersson; Timo Hursti; Steven Linton; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Chronic pain; Cognitive Behaviour Therapy; Internet; Acceptance and Commitment Therapy; Guided self-help; Secondary intervention; Psychology; Psykologi;

    Abstract : Chronic pain is a one of the most common causes of disability and sick leave. Psychological factors play a central role in the experience of pain and are important in the management of pain. However, for many people with chronic pain CBT is not available. READ MORE