Search for dissertations about: "protection of power systems"

Showing result 21 - 25 of 96 swedish dissertations containing the words protection of power systems.

  2. 21. The mediation of affect : security, fear and subversive hope in visual culture

    Author : Rodrigo Ferrada Stoehrel; Simon Lindgren; Eric Carlsson; Kari Andén-Papadopoulos; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; affect; emotion; aesthetics; visual culture; discourse; Otherness; power; security; media and communication studies; medie- och kommunikationsvetenskap;

    Abstract : The overarching purpose of this study has been to problematise how visual practices and the mediation of affect is linked to the capacity to produce (new) perceptual realities, sensations and imaginaries, ultimately aiming to legitimate or counter-legitimate the hegemonic discourses and practices mobilised in the name of security. The first part of my thesis approaches this matter through an analysis of media cultures and discursive systems circulating within the court and the state military. READ MORE

  4. 22. Some Control Applications in Electric Power Systems

    Author : Magnus Akke; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; load switching.; power oscillations; differential equation algorithm; transmission line protection; computer relaying; frequency estimation; DC cable; magnetic compass; Automation; robotics; control engineering; Automatiska system; robotteknik; reglerteknik;

    Abstract : This thesis presents some control applications in electric power systems. The work consists of the four parts: interaction between DC cables and ship steering autopilots; frequency estimation; computer relaying; field tests using load switching to damp power oscillations. READ MORE

  5. 23. Power System Oscillations - Detection, Estimation and Control

    Author : Morten Hemmingsson; Industriell elektroteknik och automation; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Elektroteknik; oscillation; power system; damping; power swing; distance protection; detection; estimation; real-time; reactive co-variation; control; Electrical engineering; load modulation; Automation; robotics; control engineering; Automatiska system; robotteknik; reglerteknik;

    Abstract : The topic of this thesis is the electro-mechanical oscillations which to some extent always are present in a power system. The demand of electric power is ever increasing. At the same time, the tolerance of disruptions in the power supply is decreasing. READ MORE

  6. 24. A Framework for Sustainable Strategic Energy Company Investment Analysis and Decision-support: Towards the Operationalisation of Sustainable Energy Systems

    Author : Pepukaye Bardouille; Miljö- och energisystem; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Miljöteknik; pollution control; Environmental technology; energy company strategic investment analysis; environmental decision-making; sustainable energy systems; strategic decision-support; kontroll av utsläpp; Energy research; Energiforskning;

    Abstract : In addition to being a key criterion of the sustainable development proviso, for business, the integration of social- and ecological considerations into decision-making is of growing importance for minimising future environmentally-related risk and associated economic costs, as well as gaining a share in growing markets favouring products and companies focusing upon social responsibility and ecological protection. The study focuses upon addressing the research question: how can socio-ecological considerations be incorporated into energy companies' formal strategic investment analysis and decision-making processes, so as to facilitate the development of sustainable energy systems?. READ MORE

  7. 25. Dynamic Resource Provisioning and Survivability Strategies in Optical Networks

    Author : Jawwad Ahmed; Lena Wosinska; Andrea Fumagalli; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optical networks; passive optical networks; wavelength; routing; Survivability; protection; restoration; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : Optical networks based on Wavelength Division Multiplexing (WDM) technology show many clear benefits in terms of high capacity, flexibility and low power consumption. All these benefits make WDM networks the preferred choice for today’s and future transports solutions which are strongly driven by a plethora of emerging online services. READ MORE