Sökning: "david steen"

Hittade 4 avhandlingar innehållade orden david steen.

  1. 1. Impact on the Distribution System due to Plug-In Electric Vehicles and Changes in Electricity Usage

    Författare :David Steen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Plug-in hybrid electric vehicle PHEV ; Electric vehicle EV ; Plug-in Electric Vehicle PEV ; Open loop radial distribution system; Electrical distribution system; Load management;

    Sammanfattning : Replacing conventional vehicles by Plug-in Electric Vehicles (PEVs) would likely increase electricity demand and put higher stress on the electrical power system. This thesis presents an approach to evaluate the impact on electrical distribution systems (DSs) caused by charging PEVs and load management of heating loads. LÄS MER

  3. 2. Modelling of Demand Response in Distribution Systems

    Författare :David Steen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Large scale integration of plug-in electric vehicles (PEVs) and intermittent renewable energy sources, such as solar PV and wind power, could affect the way in which the power system is planned, operated and controlled. In such systems, it could be desirable to utilize the flexibility of the demand, i.e. LÄS MER

  4. 3. Modeling and forecasting the load in the future electricity grid : Spatial electric vehicle load modeling and residential load forecasting

    Författare :Mahmoud Shepero; Joakim Munkhammar; David Steen; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electric Vehicles; GIS; Photovoltaics; Residential Load Forecasting;

    Sammanfattning : The energy system is being transitioned to increase sustainability. This transition has been accelerated by the increased awareness about the adverse effects of the greenhouse gas (GHG) emissions into the atmosphere. The transition includes switching to electricity as the energy carrier in some sectors, e.g. LÄS MER

  5. 4. IT-kvalitet i praxis: systemutvecklares kunskap om och syn på kvalitet

    Författare :Odd Steen; Institutionen för informatik; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Informatics; judgement ability; IT quality assessment; IT artefact; IT quality; knowledge in practice; systems theory; Informatik; systemteori;

    Sammanfattning : This work is about IT quality and systems developers' knowledge and view of it. IT quality is considered as the characteristics of a system or program that influence e.g. LÄS MER