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Showing result 1 - 5 of 10 essays matching the above criteria.

  1. 1. Transient Voltage Distribution in Bushing

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Md Nazmus Shakib Khan; [2020]
    Keywords : Coaxial cable; Overvoltage transient; Power transformer bushing; Skin effect; Koaxialkabel; överspänningsövergående; transformatorgenomföring; hudeffekt;

    Abstract : An electrical bushing is one of the most important elements in a power transformer. Steep front surges such as transient impulse voltage from lightning strikes is an inevitable electromagnetic transient mostly happening in power transmission and distribution system. The bushing might lead to be degraded due to such kind of surge. READ MORE

  3. 2. NUMERICAL CALCULATION METHOD FOR MAGNETIC FIELDS IN THE VICINITY OF CURRENT-CARRYING CONDUCTORS

    University essay from Uppsala universitet/Elektricitetslära

    Author : Gustav Gärskog; [2018]
    Keywords : magnetism; ELF magnetic fields; ELF electromagnetic fields; magnetic fields; magnetic fields health effects; Biot Savart s law; power systems;

    Abstract : This thesis aims to develop a calculation method to determine themagnetic field magnitudes in the vicinity of power lines, i.e. bothburied cables and overhead lines. READ MORE

  4. 3. Analytical calculation model used when dimensioning timber poles used as overhead power line supports

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Christopher Ekängen; [2018]
    Keywords : Calculation model; timber poles; overhead power line;

    Abstract : Overhead power lines are more reliable and cost effective than underground cables when it comes to power transmission. The overhead power lines are often suspended above ground using timber pole supports. READ MORE

  5. 4. Study of The Effect of Convective Heat Transfer on Cooling of Overhead Line Conductors Based on Wind Tunnel Experimental Results

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Wadih Naim; [2018]
    Keywords : heat balance; overhead conductor; convective cooling; dynamic line rating DLR ; värmebalans; luftledare; konvektiv kylning; dynamisk linjestorlek DLR ;

    Abstract : It is important to keep an overhead power line within rated operating conditions. Thus,an accurate prediction of the conductor's thermal and electrical behavior leads to an increasein reliability and eciency. Under DLR operation, the current rating is adjustedbased on ambient weather and solar conditions to allow for dynamic line loading. READ MORE

  6. 5. Computational handbook for power line engineers

    University essay from KTH/Hållfasthetslära (Avd.)

    Author : Linnea Sjöholm; [2017]
    Keywords : ;

    Abstract : The high voltage power network in Sweden consists mainly of overhead power lines, that is conductors suspended in the air by supports. Ideally when projecting a power line, all supports should be placed equidistantly and the conductors should be suspended at equal height. READ MORE