Sökning: "dispatch modeling"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden dispatch modeling.

  1. 1. The impact of wind power variability on the least-cost dispatch of units in the electricity generation system

    Detta är en avhandling från Chalmers University of Technology

    Författare :Lisa Göransson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wind power; intermittency; variability; dispatch modeling; variation management; electricity generation system; wind-thermal system; cycling costs;

    Sammanfattning : This thesis investigates the dynamics of electricity generation systems that involve high levels of wind power. Methods to account for wind power variability in electricity-dispatch models are explored, and the impact of wind power variability on the optimal output of the generation units, so as to meet the system load with the lowest possible cost (economic dispatch), is analyzed for several systems, for both regional and European cases. LÄS MER

  2. 2. Dynamic Power System Load -Estimation of Parameters from Operational Data

    Detta är en avhandling från Department of Industrial Electrical Engineering and Automation, Lund Institute of Technology

    Författare :Ines Romero; Lunds universitet.; Lund University.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; control engineering; robotics; Automation; large disturbances; Load modeling; normal operation; voltage stability; dynamic load models; modeling and identification; normalization in reactive load models; Elektronik och elektroteknik; Electronics and Electrical technology; Automatiska system; robotteknik; reglerteknik; Electrical engineering; Elektroteknik;

    Sammanfattning : The significance of load modeling for voltage stability studies has been emphasized by several disturbances, which have taken place in the past years. They have shown that the loads in combination with other dynamics are among the main contributors of prolonged low voltage conditions, voltage instability and collapse in the power system. LÄS MER

  3. 3. Modeling and constructing unstructured overlay networks: Algorithms, techniques and the Smart Grid case

    Detta är en avhandling från Chalmers University of Technology

    Författare :Giorgos Georgiadis; Chalmers tekniska högskola.; Chalmers University of Technology.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; unstructured overlays; matching; random walks; scheduling; smart grid; natural computing; resistor networks; clustering; online computation;

    Sammanfattning : Throughout its lifetime, the Internet was always associated with overlay networks; from the WorldWideWeb and peer-to-peer networks to blogs and social networking solutions, overlays built on the Internet infrastructure gave it additional value and made it more engaging to everyday users. Today, rising overlay networks such as the Smart Grid as well as a multitude of sensor, mobile and wireless networks herald a new era of unprecedented connectivity and networking. LÄS MER

  4. 4. Analytical Results on the Performance of Shared Resource Allocation Systems

    Detta är en avhandling från Chalmers University of Technology

    Författare :Iosif Salem; Chalmers tekniska högskola.; Chalmers University of Technology.; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Resource allocation; analytical performance evaluation; shared-object systems; energy dispatch problem;

    Sammanfattning : Resource allocation is a prevalent problem in a wide range of domains of computer science. Analytical tools that evaluate the performance of resource allocation systems allow us to compare with experimental ones, and utilize the design of such systems. LÄS MER

  5. 5. PMU-based State Estimation for Hybrid AC and DC Grids

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Wei Li; KTH.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Power system state estimation plays key role in the energy management systems(EMS) of providing the best estimates of the electrical variables in the grid that arefurther used in functions such as contingency analysis, automatic generation control,dispatch, and others. The invention of phasor measurement units (PMUs) takes thepower system operation and control into a new era, where PMUs’ high reportingrate and synchronization characteristics allow the development of new wide-areamonitoring, protection, and control (WAMPAC) application to enhance the grid’sresiliency. LÄS MER