Budapest University of Technology and Economics, Faculty of Electrical Engineering and Informatics

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    Electrical Equipment and Insulations

    A tantárgy neve magyarul / Name of the subject in Hungarian: Villamos berendezések és szigetelések

    Last updated: 2015. február 25.

    Budapest University of Technology and Economics
    Faculty of Electrical Engineering and Informatics

    BSc Electrical Engineering

    Sustainable Power Engineering Specialisation

    Course ID Semester Assessment Credit Tantárgyfélév
    VIVEAC02 5 2/1/0/v 4  
    3. Course coordinator and department Dr. Cselkó Richárd,
    4. Instructors

    Name:

    Position:

    Department:

    Dr. Szedenik Norbert

    associate professor

    Dept. of Electric Power Engineering

    Cselkó Richárd

    assistant lecturer

    Dept. of Electric Power Engineering

    Dr. Kiss István

    associate professor

    Dept. of Electric Power Engineering

    5. Required knowledge Elektrotechnics, power engineering, basics of electromagnetic fields
    6. Pre-requisites
    Kötelező:
    ((Szakirany("AVINsmartgrid", _) VAGY
    Szakirany("AVINvillgephajt", _) VAGY
    Szakirany("AVINvillszigr", _) VAGY
    Szakirany("AVIvillen", _)) VAGY
    Szakirany("VIABV-SUSTEN", _) )




    ÉS NEM ( TárgyEredmény( "BMEVIVEA336" , "jegy" , _ ) >= 2
    VAGY
    TárgyEredmény("BMEVIVEA336", "FELVETEL", AktualisFelev()) > 0)

    A fenti forma a Neptun sajátja, ezen technikai okokból nem változtattunk.

    A kötelező előtanulmányi rend az adott szak honlapján és képzési programjában található.

    Ajánlott:
    Subjects required for the selection of the specialisation.
    7. Objectives, learning outcomes and obtained knowledge

    The aim is to provide knowledge about the low and high voltage switchgears, basics of their operation and selection, the interaction between the switchgears and the electric network, insulators applied in electric devices and equipment.

    8. Synopsis

    Week 1: Categorization of electric switchgears and apparatus, their role in the low, medium and high voltage networks and their functions in the operation of substations. Duties of electrical insulation in apparatus and stresses affecting them. Operation phases of switchgears and calculation of their load.

    Week 2: Discharges in gaseous insulation. Basic properties of the electric arc, its quenching and behaviour as a circuit element. Goals and methods of electric arc protection. Properties of sulphur-hexafluoride gas as an arc quenching medium.

    Week 3: Construction and operation of sulphur-hexafluoride circuit breakers and metal-clad switchgear. Construction and operation of medium and low voltage circuit breakers and fuses. Apparatus of the medium voltage overhead distribution network.

    Week 4: Aspects of the selection of electrical apparatus. Types of low voltage switches and their role in the electrical supply of homes, offices and industrial facilities. Standards related to building electrification.

    Week 5: Basics of electrical design. Phases of design and the required documentation. Standard symbols.

    Week 6: Physical processes in insulation at low electric field: conduction and polarization.

    Week 7: Physical processes in liquid and solid insulation at high electric field: breakdown and flashover.

    Week 8: Duties and stresses of insulation. Coordination of insulation levels.

    Week 9: Construction and operation of overvoltage protecting devices.

    Week 10: Basics of design on electrical stress. Economic use of insulation. Potential control.

    Week 11: Insulation of transformers and the applied insulating materials. Insulation of rotating machines and the applied insulating materials. Construction of high voltage current and voltage transformers and their insulation system.

    Week 12: Construction and insulation of overhead lines and the applied insulating materials. Construction of cables and the applied insulating materials.

    Week 13: Generation and measurement of high voltage – DC, AC and aperiodic voltage impulse, high frequency and damping impulse.

    Week 14: Basics of standard commissioning tests of electrical apparatus, electrical commissioning tests.


    Calculations in the following topics:


    Loads of switchgear. Switch-on transients and let-through current calculation at DC and AC voltage. Transient recovery voltage calculation in case of short circuit at the busbar, on the network and in the dangerous zone. Calculation of electrical stress in the most common insulation arrangements.

     
    9. Method of instruction 3 lectures, 1 practice per week
    10. Assessment

    During the semester: passing one midterm test

    In the exam period: written exam with possible oral exam improvement

    11. Recaps Midterm test can be rewritten once during the semester and once during the repeat period.
    12. Consultations

     At time and date agreed by the lecturers.

    13. References, textbooks and resources Documents prepared by the staff of the Department (downloadable from the website of the Department)

    E. Kuffel, W.S. Zaengl, J. Kuffel: High Voltage Engineering – Fundamentals, Second edition 2000, Butterworth-Heinemann

    Ruben D. Garzo: High Voltage Circuit Breakers, 2002, Marcel Dekker Inc.
    14. Required learning hours and assignment

    Contact hours

    56

    Preparation for contact hours

    14

    Preparation for the midterm

    20

    Learning at home

    10

    Preparation for the measurements

     

    Homework assignments

    0

    Preparation for the exam

    20

    Total workload

    120

     

    15. Syllabus prepared by

    Name:

    Position:

    Department:

    Dr. Szedenik Norbert

    associate professor

    Dept. of Electric Power Engineering

    Cselkó Richárd

    assistant lecturer

    Dept. of Electric Power Engineering

    Dr. Kiss István

    associate professor

    Dept. of Electric Power Engineering