Search for dissertations about: "power supply thesis"

Showing result 16 - 20 of 463 swedish dissertations containing the words power supply thesis.

  2. 16. Towards greener supply chains : Inclusion of environmental activities in relationships between logistics service providers and shippers

    Author : Uni Martinsen (Sallnäs); Maria Huge-Brodin; Maria Björklund; Joseph Sarkis; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Green supply chain management; inter-organisational relationships; environmental activities; logistics service providers; shippers;

    Abstract : It is well-recognised that companies are under pressure to take responsibility for the environmental impact of their operations. Logistics service providers (LSPs), who through their transport and logistics operations have a large negative impact on the environment, are one type of supply chain actor that is under such pressure. READ MORE

  4. 17. Planning Models for Single Wire Earth Return Power Distribution Networks

    Author : Geofrey Bakkabulindi; Lennart Söder; Mikael Amelin; Peiyuan Chen; KTH; []
    Keywords : Rural electrification; power distribution planning; Single Wire Earth Return; distribution power flow; power system modeling; SRA - Energy; SRA - Energi;

    Abstract : The high cost of grid extension to rural areas, often characterized by scattered communities with low load densities, requires the use of low cost electrification technologies to ensure economic viability. In Single Wire Earth Return (SWER) power distribution networks, the earth itself forms the current return path of the single phase system leading to significant cost savings on conductors, poles and poletop hardware compared to conventional systems. READ MORE

  5. 18. A Stochastic Control Approach to Include Transfer Limits in Power System Operation

    Author : Magnus Perninge; Lennart Söder; Christopher DeMarco; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Frequency control; power regulating market; power system operation; power system security; stochastic impulse control; transfer capacity; transfer limit;

    Abstract : The main function of the power grid is to transfer electric energy from generating facilities to consumers. To have a reliable and economical supply of electricity, large amounts of electric energy often have to be transferred over long distances. READ MORE

  6. 19. Purchasing in power asymmetry - A study of vaccine procurement for developing countries

    Author : Ala Pazirandeh; Teknisk logistik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Purchasing; Power; buyer-supplier relationships; humanitarian logistics; global health;

    Abstract : The purpose of this study was to increase the understanding of, and develop a model to explain, interrelations between purchasing strategies carried out by buyers within vaccine supply chains for developing countries and their buyer-supplier power structure. In the humanitarian aid context, availability of required goods (e.g. READ MORE

  7. 20. Voltage Dip (Sag) Estimation in Power Systems based on Stochastic Assessment and Optimal Monitoring

    Author : Gabriel Olguin; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; power quality; symmetr?cal components; stochastic methods; impedance matrix; voltage dips; integer optimisation; power systems; short-circuit faults; voltage sags;

    Abstract : This dissertation deals with the statistical characterization of the performance of power systems in terms of voltage dips (sags). It presents a method named voltage dip estimation that extends monitoring results to buses not being monitored. READ MORE