Uppsatser om power quality

300 uppsatser · sida 1 av 20

vindkraftens påverkan på elkvaliten

Examensarbete, avancerad nivå · KTH

This thesis concerns how the power quality in the grid is affected by the connection of wind power plants. As things are at present, Fortum Distribution AB has a number of wind turbines and wind parks connected to the own grid. As the pressure on building and connecting …

Mätning i nätstationer - nyttor och problem

Examensarbete, avancerad nivå · Chalmers tekniska högskola

… currenttransformers. The measurements in this study involve current, voltage, power, power factor,temperature, energy and power quality.Measuring instruments that are relevant to implement are intended to measure current,voltage, power, power factor, energy and, possibly, power …

Statuskontroll av Paradisskolans elektriska belastning

Examensarbete, grundnivå · Högskolan Väst

In this thesis is studied the electrical load of Paradisskolan with respect to power quality and energy consumption. The school's owner Trollhättans Tomt AB is also interested to know if they can reduce their costs by changing to smaller meter fuses. A recurring ground fault …

Livskvalitet hos personer med cancersjukdom inom palliativ vård

Kandidatuppsats · Ersta Sköndal högskola

… theme includes three subthemes: relationship to family and friends, higher power and personnel. The second theme includes four subthemes: to feel hope, to accept, to take responsibility and to be independent. The third theme includes two subthemes: to feel anxiety, shame and …

Hur påverkar en ökad andel solceller Umeå Energis elnät?

? En utredning med fokus på spänningsvariationer och osymmetri inom landsbygds- och tätortsnät vid en- och trefasanslutning av solcellsanläggningar

Examensarbete, avancerad nivå · Umeå universitet

A good power quality can be an important prerequisite to achieve a sustainable society. Scandinavia's electrical system is in many respects superior, and Sweden has a fossil free electricity generation at 97 % and a reliability of electricity distribution at 99.98 %. Meanwhile …

Ska pyramiderna rivas?

en studie om mikromakt

D-uppsats · Handelshögskolan i Stockholm

… working in frontline jobs in service organizations are exercising ”micro power”. The use of ”micro power” is defined as ”to in ones professional role, without objectively defensible reasons, impose sanctions on a customer”. The interviewees are explaining their use of ”micro …

Därom tvista de lärde

en analys av kvalitetsbegreppet och dess betydelse fö utformandet av bibliotekets inköpspolicy

Magisteruppsats · Lunds universitet

… on the importance of education and experience when it comes to having the power in deciding what should be seen as high quality or not. This, combined with other results, has made me come the conclusion that librarians have a lot to gain in the way they are handling their …

"Målsättningen är en nöjd värmlänning"

Vårdpersonalens syn på tillgänglighet, bemötande och kvalitet i patientmötet

Kandidatuppsats · Karlstads universitet

… if there is a need for it. We have used Maslows pyramid of needs, Foucault's power concept, Herzberg motivation theories and TQM Deming with 14 points. The investigation has shown a result that partially fulfilled their expectations and we managed to get answers to our …

Kvalitetsarbete i grundskolan ur ett specialpedagogiskt perspektiv - en fallstudie

Examensarbete, grundnivå · Malmö högskola

… on the quality assurance documents of the school. The study illuminates the power that principals and teachers have in describing students in these documents. The study intends to raise awareness to the potency of the written word in this context. Key words: discourse analysis …

Agens i matematikundervisning

En jämförande studie av elevers agens och makt i lärandesituationer där IKT används

Masteruppsats · Stockholms universitet

The purpose of this study is to investigate how power is distributed in the mathematics classroom and how students achieve agency when ICT (Information and communication technology) is used as a teaching tool. Three learning situations, structured by mathematics, are analysed …

Har forskningen om internationella relationer någon praktisk betydelse?

En studie om idémakt i utrikespolitik

Magisteruppsats · Södertörns högskola

… meaning. The main focal point is about the importance of the scholar idea soft power, and its meaning on foreign policy actions through expressions. A quantity and quality method is used. The point of the main theory that concerns international relations takes a rationalistic …

Utredning av frekvensregleringens påverkan på mekanisk utrustning i en kaplanturbin

Examensarbete, avancerad nivå · Uppsala universitet

As a consequence of increasing wind power installations in the Nordic grid the last years, the need for regulating power has become larger. In the Nordic grid, regulating power is mainly provided by hydro power. One part of the regulating power is called frequency control, which …

Undersökning av elkvalitet i distributionsnät med omfattande vindkraftselproduktion

Examensarbete, avancerad nivå · Chalmers tekniska högskola

The goal for this master thesis project has been to investigate the power quality in adistribution grid, which has a high fraction of dispersed power production due towindmills. The study has been done on a grid in Laholm South of Halmstad, whereapproximately 45 windmills are …

LAN-Uppgradering

Högskoleuppsats · Mälardalens högskola

… enough, or in other ways not adapted to manage the installed production, power quality may be adversely affected. Criteria for what constitutes good power quality are defined in national and international prescribed standards, and accountability for these to be sustained are …