Sökning: "power quality monitoring"

Visar resultat 16 - 20 av 72 avhandlingar innehållade orden power quality monitoring.

1. 16. Extracting Information from Voltage-Dip Monitoring

   Författare :Azam Bagheri; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Power Engineering; Elkraftteknik;

   Sammanfattning : A voltage dip is a short duration reduction in voltage magnitude due to a short duration increase in current magnitude. Causes of dips are, among others, electrical faults, large motor starting, transformer energizing and failure of power-electronic converters. LÄS MER

3. 17. Effects of Vagus Nerve Stimulation and Ketogenic Diet on Quality of Life and Changes in EEG and Sleep

   Författare :Tove Hallböök; Lund Pediatrik; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; vagus nerve stimulation; neuropsykologi; Neurologi; neurophysiology; neuropsychology; Neurology; Medicin människa och djur ; Medicine human and vertebrates ; behaviour; attention; ketogenic diet; delta power; slow wave sleep; REM; mood; sleep; quality of life; EEG; seizure frequency; spike detection; children; neurofysiologi; Pediatri; epilepsy; Pediatrics;

   Sammanfattning : When anti-epileptic drugs fail, and epilepsy surgery is found unfeasible or ineffective, there remains a group of at least 25% of children with epilepsy in whom seizure control cannot be achieved. Vagus nerve stimulation (VNS) is an adjunctive treatment for medically refractory epilepsy. LÄS MER

4. 18. Towards Technology Assessment of Ocean Energy in a Developing Country Context

   Författare :Linus Hammar; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electricity; Indian Ocean; technology assessment; ocean energy; Africa; rural electrification; ocean thermal energy conversion; wave power; tidal power;

   Sammanfattning : New technologies for the extraction of valuable ocean resources are emerging: renewable ocean energy. Ocean energy technologies have so far primarily been developed in industrialized countries but will be deployed in both industrialized and developing countries. LÄS MER

5. 19. The Ethics of Workspace Surveillance

   Författare :Elin Palm; Sven Ove Hansson; Jeroen van den Hoven; KTH; []
   Nyckelord :HUMANIORA; HUMANITIES; asymmetric relations; autonomy; consent; contract theory; contractualism; employment; ethical technology assessment; ethics; monitoring; Philosophy subjects; Filosofiämnen;

   Sammanfattning : The general framework of this thesis is that of ethical Technology Assessment (eTA). Whereas the first essay proposes an inclusive approach to technology assessment by delineating an ethical checklist, the following essays focus on two of the checklist points, i.e. LÄS MER

7. 20. Wide area monitoring and control systems - application communication requirements and simulation

   Författare :Moustafa Chenine; KTH; []
   Nyckelord :Wide Area Monitoring and Control systems; Phasor Measurements Units; Power System Communication; SCADA systems;

   Sammanfattning : Today’s electrical transmission & distribution systems, are facing a number of challenges related to changing environmental, technical and business factors. Among these factors are, increased environmental restrictions leading to higher share of production from renewable and uncontrollable sources as well as local environmental concerns regarding construction of new transmission and distribution lines. LÄS MER