Search for dissertations about: "PROTECTION"

Showing result 16 - 20 of 1786 swedish dissertations containing the word PROTECTION.

  2. 16. Multi-terminal HVDC protections based on transient line modeling

    Author : Niclas Johannesson; Staffan Norrga; Hans-Peter Nee; Jef Berteen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HVDC transmission; HVDC protection; traveling wave protection; MTDC protection; Electrical Engineering; Elektro- och systemteknik;

    Abstract : High voltage direct current (HVDC) is considered one of the critical technologies required for the power system to enable the transition toward renewables. With an increasing geographical density of HVDC converters, there is a potential for optimization by connecting more than two converters into a shared DC transmission system, thus forming a multi-terminal HVDC (MTDC) system. READ MORE

  4. 17. Modelling and Evaluating Effect of Automation, Protection, and Control on Reliability of Power Distribution Systems

    Author : Ying He; KTH; []
    Keywords : electric distribution system; reliability assessment; protection; automation; control;

    Abstract : This thesis deals with modeling and evaluating effect ofautomation, protection, and control on reliability of powerdistribution systems. It presents the work and results of theproject ``Impacts of Distribution Automation on SystemReliability'' within the research program ``New DistributionSystems for Power Utilities'' performed at Competence Centre inElectric Power Engineering, KTH. READ MORE

  5. 18. Design and Analysis of Self-protection : Adaptive Security for Software-Intensive Systems

    Author : Charilaos Skandylas; Welf Löwe; Narges Khakpour; Jesper Andersson; Javier Camara Moreno; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Self-Protection; Security Analysis; Self-Adaptation; Computer Science; Datavetenskap;

    Abstract : Today’s software landscape features a high degree of complexity, frequent changes in requirements and stakeholder goals, and uncertainty. Uncertainty and high complexity imply a threat landscape where cybersecurity attacks are a common occurrence, while their consequences are often severe. READ MORE

  6. 19. Perspectives on Inequality and Social Protection

    Author : Göran Holmqvist; Göteborgs universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; income inequality; social transfers; HIV; crime; fertility; social protection; aid; aid modalities; SOCIAL SCIENCES;

    Abstract : The dissertation consists of an introductory chapter and four separate articles. Two of the articles investigate the links between income inequality and two increasingly salient development problems, particularly in Latin America and Africa: violent crime and HIV. READ MORE

  7. 20. Distance Protection of Transmission Lines with High Levels of Series Compensation : A study on frequency and time domain communication independent distance protection for series compensated lines

    Author : Md Tanbhir Hoq; Nathaniel Taylor; Jianping Wang; Claus Leth Bak; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Series capacitor; Series compensation; Transmission line; Distance protection; Incremental quantity; Lissajous curve; RL model; RLC model; Seriekondensator; Seriekompensation; Transmissionslinje; Distansskydd; Inkrementell kvantitet; Lissajous-kurva; RL-modell; RLC-modell; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Series capacitors are used in electric transmission lines to increase their power transfer capacity. They compensate for the inductive reactance of the line. They offer a useful alternative to building new lines, in view of economic and environmental constraints. READ MORE