Sökning: "grid quality"

Visar resultat 6 - 10 av 144 avhandlingar innehållade orden grid quality.

1. 6. Solar Variability Assessment and Grid Integration : Methodology Development and Case Studies

   Författare :David Lingfors; Joakim Widén; Uwe Zimmermann; Eva Wäckelgård; Tobias Boström; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Solar variability; Photovoltaics; Grid integration; GIS; Distributed generation; Engineering Science; Teknisk fysik;

   Sammanfattning : During the 21st century there has been a tremendous increase in grid-connected photovoltaic (PV) capacity globally, due to falling prices and introduction of economic incentives. PV systems are in most cases small-scale, installed on residential dwellings, which means that the power production is widely distributed and close to the end-user of electricity. LÄS MER

3. 7. Building-related renewable electricity production with storage and energy-efficient buildings : Exploring barriers, drivers and quality assurance

   Författare :Anna-Lena Lane; Mathias Cehlin; Thomas Olofsson; Högskolan i Gävle; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy efficiency gap; energy performance gap; ByggaE; battery storage; barriers; drivers; Non-energy benefits NEB; questionnaire; quality assurance; PV; energieffektivisering; energieffektiva byggnader; kvalitetssäkring; byggprocessen; ByggaE; solel; batterilager; hinder; drivkrafter; enkätstudie; Hållbar stadsutveckling; Sustainable Urban Development;

   Sammanfattning : There is a need to reduce unsustainable use of fossil fuels. Increased usage of renewable energy by combined use of photovoltaic solar panels (PV) with battery storage is one way. Another way is to increase awareness of energy usage and reduce the energy performance gap by building energy-efficient buildings. LÄS MER

4. 8. Decentralized resource brokering for heterogeneous grid environments

   Författare :Johan Tordsson; Erik Elmroth; Bo Kågström; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Grid computing; Resource brokering; interoperability; advance reservations; coallocation; Web services; Computer science; Datavetenskap;

   Sammanfattning : The emergence of Grid computing infrastructures enables researchers to share resources and collaborate in more efficient ways than before, despite belonging to different organizations and being distanced geographically. While the Grid computing paradigm offers new opportunities, it also gives rise to new difficulties. LÄS MER

5. 9. Grid Integration and Impact of a Wave Power System

   Författare :Arvind Parwal; Cecilia Boström; Damir Šljivac; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ANN; buck-boost converter; current control; energy storage system; force control; flicker; FPGA control; grid integartion; harmonics; linear generator; PHIL; microgrid; voltage variation; wave energy; WEC; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

   Sammanfattning : Increasing energy consumption and concern for carbon emissions has boosted the demand for renewable energy production. The focus on renewable energy has gained much attention in wind, solar, hydro and wave power generations. Wave power has great potential due to its high energy density but there are challenges as well. LÄS MER

7. 10. Power quality analysis and techno-economic modeling for microgrids

   Författare :Jakob Nömm; Sarah Rönnberg; Math Bollen; Josep Guerrero; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Power Quality; Economy; Microgrids; Electric Power Engineering; Elkraftteknik;

   Sammanfattning : The work done in this thesis considers microgrids from two different aspects. Power quality and techno-economics of microgrids. Detailed power quality measurements have been made at a single house hydrogen-solar microgrid that consists of state-of-the-art energy efficiency technology, energy production and energy storage. LÄS MER