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

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    Physics and Diagnostics of Insulations

    A tantárgy neve magyarul / Name of the subject in Hungarian: Szigetelések fizikája és diagnosztikája

    Last updated: 2016. augusztus 27.

    Budapest University of Technology and Economics
    Faculty of Electrical Engineering and Informatics
    PhD Course
    Course ID Semester Assessment Credit Tantárgyfélév
    VINFD302 1. - 4. 4/0/0/v 5 1/1
    3. Course coordinator and department Dr. Berta István, Villamos Energetika Tanszék
    4. Instructors

    Name

    Affiliation

    Department, institute

    Dr. István Berta

    professor

    Department of Electric Power Engineering, Group of High Voltage Technology and Equipment

    Dr. Zoltán Ádám Tamus

    associate professor

    Department of Electric Power Engineering, Group of High Voltage Technology and Equipment

    5. Required knowledge

    Mathematics, Physics, Electromagnetic fields, Measurement Technology, Power System Engineering

    7. Objectives, learning outcomes and obtained knowledge

    The subject helps to prepare for the High Voltage Engineering Mods teaching the advanced knowledge of high voltage engineering and dielectric physics.

    8. Synopsis

    Ideal and real dielectrics, electrical field in real dielectrics. Electrical phenomena in real dielectrics: conduction, polarization and breakdown processes and their properties and interactions.

    Conduction, elementary polarization processes, relation between the macro- and micro properties. The effect of polarization processes: permittivity and dielectric loss. Properties of polarization: polarizability, polarization vector, temperature and frequency dependence of polarization. The complex permittivity. Polarization spectrum and its investigation.

    Breakdown properties, dielectric strength. Breakdown mechanisms in gaseous, liquid and solid insulation materials. Statistic theory of breakdown.

    Physics of partial discharges: corona, internal and surface discharges. Breakdown channel development, electrical and water treeing. Measurement methods and processes. Evaluation of statistical methods by computer, application of artificial intelligence methods, expert systems and neural networks.

    Ageing of insulating materials, chemical and physical processes. The rule of temperature, field strength and environmental stresses in ageing. Electrical and thermal ageing laws. Investigation of ageing models.

    Relation of deterioration processes and dielectric properties. Modeling of dielectric processes and dielectric properties. Electrical model of dielectrics and their limitations.

    Diagnostic methods of electrical insulations. Methods based on current, voltage and loss factor measurement.

    9. Method of instruction Lecture
    10. Assessment

    a. Mid-term period: literature overview

    b. Examination period: exam

    13. References, textbooks and resources

    Alston : High Voltage Technology Oxford Univ. Press, London, 1986

    Gorur, G. - Raju: Dielectrics in Electric Fields, Marcel Dekker, 2003

    Hauschild - Mosch: Statistik für Elektrotechniker Verlag Technik, Berlin, 1984

    Horváth, T. – Csernátony-Hoffer, A.: Nagyfeszültségű Technika. Tankönyvkiadó, Budapest, 1986

    Horváth, T. - László – Máthé, B. – Németh, E.: Villamos szigetelések vizsgálata Műszaki Kiadó, Budapest, 1979

    Kahle: Elektrische Isoliertechnik Verlag Technik, Berlin, 1988.

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

    Németh, E. – Horváth, T.: Nagyfeszültségű szigeteléstechnika Tankönyvkiadó, Budapest, 1990.

    14. Required learning hours and assignment
    Kontakt óra
    Félévközi készülés órákra
    Felkészülés zárthelyire
    Házi feladat elkészítése
    Kijelölt írásos tananyag elsajátítása
    Vizsgafelkészülés
    Összesen
    15. Syllabus prepared by

    Name

    Affiliation

    Department, institute

    Dr. István Berta

    professor

    Department of Electric Power Engineering, Group of High Voltage Technology and Equipment

    Dr. Zoltán Ádám Tamus

    associate professor

    Department of Electric Power Engineering, Group of High Voltage Technology and Equipment