Physics and Diagnostics of Insulations, Electric Switching Devices, Mathematics, Physics, Electromagnetic fields, Measurement Technology, Power System Engineering

The main aim of the subject is to introduce the latest techniques of calculation and measurement of high voltage and high current, which is the basis of the economic and safe operation of many electrical equipment. This is the theoretical and practical principle of the reliable operation of grids – with a voltage level of a few hundred kilovolts and nominal (or fault) current of a few kiloamper – the insulators, or the connectors and mounting units.

-    Generation and measurement of high voltage

-    Generation of high direct/alternating/impulse voltages

-    Internal and environmental overvoltage

-    Design and operation of impulse voltage generators

-    Measurement of high direct/alternating/impulse voltages

-    Special design and measurement principles

-    Investigation of transient processes

-    Calculation and measurement of high electric fields

-    Properties of electrical insulators

-    Measurement of dielectric parameters of insulators

-    Insulation diagnostics

-    Equipment and operation of high voltage laboratories

-    Overvoltage-protection, EMC, electric and magnetic shielding

-    Electrical discharges in gases, liquids and solid materials

-    Special safety requirements of high voltage systems

-    Live-line maintenance

-    Scope and inspection methods of high current technology

-    Skin effect, models in ferromagnetic and non-ferromagnetic conductors

-    Heating phenomena

-    Heating caused by nominal and overcurrent

-    Electrodynamic forces between high-current busbars and electrodes

-    The electric arc

-    Interruption of high-current arcs

-    Role of high-current technology in the economic way of design of electrical equipment

-    Design and operation of test transformers. Generation of high alternating voltages by oscillating circuit

-    Effects of current in the human body: heat, mechanical, electrochemical effects and paralysis. Role of current, frequency and time, allowable limits.

-    Effects of electric and magnetic fields. Laboratory tests on animals and humans. Epidemiologic inspections.

-    Induced current in the human body. Direct effects of electric and magnetic fields.

-    Contact with metal objects in electromagnetic fields.

-    Calculation of electric field around high voltage power lines. Measurement of electric and magnetic fields.

-    Ionizing and non-ionizing radiations. Heat effects of non-ionizing radiations. Direct harm caused by the photon of ionizing radiations. Description of doses. Equipment of measurement.

-    Special stresses: natural electric and magnetic fields.

-    Lightning.

-    Electrostatic fields.

Lecture

a. Mid-term period: literature overview

b. Examination period: exam

Handbook of Electrostatic Processes,Ed. Jen-shih Chang,Marcel Dekker Inc, New York, 1995, Chapter 31. Berta, I.

Horváth, T.: Fundamentals of Lightning and Lightning Protection, RSP, Herfordshire, UK, 2006

Horváth T.- Csernátony-Hoffer, A.: Nagyfeszültségű technika. (Tankönyvkiadó, Budapest. 1986.)

Horváth, T. - Berta, I: Static Elimination, RSP, John Wiley & Sons, Chichester, 1982

Horváth, T. – Berta, I. – Pohl, J.: Az elektrosztatikus feltöltődések (Műszaki Könyvkiadó, Budapest, 1984.)

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

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

Koller, L.: Nagyfeszültségű kapcsolókészülékek, elektronikus jegyzet