Course detail

High Voltage Phenomena

FEKT-SBVJAcad. year: 2005/2006

Characteristics of high voltage distribution networks. Dielectric properties of solid, liquid and gaseous insulators. Application of the insulators in electrical devices design and operation. Behaviour of the insulators at transient and/or continuous dielectric stress. Overvoltages in electric devices and networks. Protection against overvoltages. Particular supply sources of high voltages and currents for measurement purposes. High voltage measurement. Solutions of typical tastks and their verification at high voltage test laboratories of ABB EJF and IVEP Brno companies.

Language of instruction

Czech

Number of ECTS credits

3

Mode of study

Not applicable.

Guarantor

prof. RNDr. Vladimír Aubrecht, CSc.

Department

Department of Power Electrical and Electronic Engineering (UVEE)

Learning outcomes of the course unit

Students get knowledge about methods of both calculation and measurement of insulators parameters and their application to high voltage electrical devices design and power transmission.

Prerequisites

It is a course of the non-structured ending study program

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Not applicable.

Assesment methods and criteria linked to learning outcomes

Written test, 2 projects. Max. 36 pts., required minimum of 26 pts.

Course curriculum

Characteristics of high voltage distribution networks. Dielectric properties of solid, liquid and gaseous insulators. Application of the insulators in electrical devices design and operation. Behaviour of the insulators at transient and/or continuous dielectric stress. Overvoltages in electric devices and networks. Protection against overvoltages. Particular supply sources of high voltages and currents for measurement purposes. High voltage measurement. Solutions of typical tastks and their verification at high voltage test laboratories of ABB EJF and IVEP Brno companies.

Work placements

Not applicable.

Aims

To give information about insulators application in both electrical energy transmission and distribution at various voltage levels. High voltage insulators and their utilization are dealt with. Energy losses in transmission lines are discussed in detail.

Specification of controlled education, way of implementation and compensation for absences

The content and forms of instruction in the evaluated course are specified by a regulation issued by the lecturer responsible for the
course and updated for every academic year.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

A. VEVERKA:TECHNIKA VYSOKÝCH NAPĚTÍ,SNTL/ALFA PRAHA 1978
L. I. SIROTINSKIJ a kol.:TECHNIKA VYSOKICH NAPRJAŽENIJ,GOSENERGOIZDAT MOSKVA 1965
L. L. ALSTON:HIGH VOLTAGE TECHNOLOGY,UNIVERSITY PRESS OXFORD 1968

Recommended reading

Not applicable.

Classification of course in study plans

  • Programme EI-B3 Bachelor's

    branch B3-SEE , 3. year of study, summer semester, optional specialized

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

prof. RNDr. Vladimír Aubrecht, CSc.

Syllabus

General description of high voltage phenomena. Matter and field interactions, electrostatic field properties.
Graphical and numerical solutions of electrostatic fields.
Experimental and analog solutions of electrostatic fields, energy and force parameters.
Dielectric properties of substances. Gaseous, liquid and solid insulators.
Dielectrical phenomena on insulators interfaces. Rating of insulators with respect to dimensions.
Practical utilization of insulators: bushings, supports, high voltage insulators.
Insulator chains, rating of bushings and supports.
High voltage power cables.
Power sources of high voltage.
High voltage measurements. Description of the measurement methods, measurement of steady state quantities.
Pulse voltages measurements, voltage dividers, clynodographs and magnetic bars.
Overvolatges in electrical devices. Atmospheric, operational and switching overvolatges.
Protection against overvolatges, insulation co-ordination, surge arresters, earthing.

Laboratory exercise

13 hours, optionally

Teacher / Lecturer

prof. RNDr. Vladimír Aubrecht, CSc.

Syllabus

Introduction, organization and safetyinstructions.
Calculation and measurement of voltage distribution on insulator chain.
Calculation and measurement of thermal breakdown on cylindrical wall with voltage stress.
Measurement of electrostatic field using electrolytic bath.
Measurement of transient pulse voltages on insulator chain.
Calculation and measurements on condenser bushing.
Measurement of pulse characteristics.
Measurement of inhomogenities and micro damages on insulators by the method of Kirilian's pictures.
Measurement of inhomogenities and micro damages on conductors by the method of Kirilian's pictures.
Measurement of half waveform pulse voltages.
Measurement of partial discharges on insulators.
Measurement of protection angle on earthing ropes.
Type test of electrical appartus.