Essays about: "ställverk"

Showing result 1 - 5 of 8 essays containing the word ställverk.

  1. 1. Distribution On Load Tap Changer Control Using IEC61850 Client/Server Architecture

    University essay from KTH/Skolan för elektro- och systemteknik (EES)

    Author : Andrius Maneikis; [2016]
    Keywords : IEC61850; OLTC; transformer; tap changer; distribution; electric; power; automation; client; server;

    Abstract : Distributed generation is transforming the power system grid to decentralized system where separate units like wind power generators or solar panel shall coexist and operate in tandem in order to supplement each other and make one extensive system as a whole so called smart grid. It is utmost important to have a control ability over such units not only on a field level but on a system level as well. READ MORE

  2. 2. Propagation and mitigation of Very Fast Transient Overvoltage in Gas Insulated Substation

    University essay from KTH/Elektroteknisk teori och konstruktion

    Author : Francois Galliano; [2015]
    Keywords : ;

    Abstract : Very Fast Transients are surge overvoltages created for example when opening or closing adisconnector switch (DS). Because of the very high frequency stress they exert on theequipment and their magnitude (up to 3 pu), they constitute an important issue in the designof ultra-high voltage Gas Insulated Substations. READ MORE

  3. 3. CFD Modelling of Pressure-control Devices in Substations

    University essay from Umeå universitet/Institutionen för fysik

    Author : Jakob Markgren; [2014]
    Keywords : Physics; Computational Fluid Dynamics; CFD; Arc; Arc Failure;

    Abstract : .... READ MORE

  4. 4. Substation consumption forecast in the French power system

    University essay from KTH/Elektriska energisystem

    Author : Sylvain Kerouanton; [2014]
    Keywords : ;

    Abstract : This paper presents the methods and the results obtained during the project conducted bySylvain Kerouanton for the French transmission system operator RTE. The objective of theproject is to define methods to estimate the electric consumption of the substations of thehigh voltage network. READ MORE

  5. 5. General description of measures for environmental compliance of substations owned by Svenska kraftnät in protected areas with focus on oil spill

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Victoria Done; [2014]
    Keywords : substation; environmental compliance; transformer oil; oil separation; oil handling; ställverk; miljösäkring; transformatorolja; oljeavskiljning; oljehantering;

    Abstract : Svenska kraftnät is the Swedish transmission system operator, responsible for the national electrical grid with power lines of 220 kV and 400 kV, and the electrical substations of the grid. In this master thesis an old substation located in a sensitive environmental area is inspected and its environmental risks defined and assessed. READ MORE