Course detail

Distribution Equipment

FEKT-BRZBAcad. year: 2017/2018

The first part of course is dedicated to switchgears in electrical substations focusing on their schemes, design and properties, but also on branches equipment and service operations. Practical experience students gain by working on projects, in which they solve examples of switchgear busbar dimensioning or checking of overhead line conductors. The power system protections are discussed in the second part of the course. Working in laboratories where students get familiar with the selected electric protection is a practical experience. In the end the course also deals with an introduction to the high voltage technology, which is related to dielectric strength of distribution equipment.

Language of instruction

Czech

Number of ECTS credits

6

Mode of study

Not applicable.

Guarantor

doc. Ing. Jaroslava Orságová, Ph.D.

Department

Department of Electrical Power Engineering (UEEN)

Learning outcomes of the course unit

Graduates of this course should be able
- characterize basic types of transmission and distribution networks,
- explain the differences in the arrangement of busbar systems of switchgears,
- list the basic conditions for blocking the apparatus in switchgear branches
- apply the basic aspects of power lines dimensioning,
- explain the principles of the basic types of electrical protection,
- explain the effect of current transformers to the electrical protections.

Prerequisites

The basic knowledge of power distribution are required in this course - the parameters of the power system elements of power line losses or characteristic values of short-circuit currents.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Techning methods include lectures, computer laboratories and practical laboratories. Course is taking advantage of e-learning (Moodle) system. Students have to write a two projects/assignments during the course.

Assesment methods and criteria linked to learning outcomes

Students can obtain up to 50 points of the overall evaluation of the course during the semester - 20 points for projects up to 10 points for the processing of laboratory protocols and 20 points in the final test. A student has to obtain at least half of the maximum points in all mentioned activities.
The final exam is oral (max. 50 points). It focuses on the orientation in the topics as are defined for the State exam. The condition for the successful passing this exam is to get at least half of the maximum points.

Course curriculum

1. Introduction - substations as part of power system, nominal voltages, operation mode of distribution networks, basic electrical schemes and parameters of switchgears.
2. Switchgears bays facilities - features and applications. Operation manipulation in substation.
3. Technology version of HV and MV substation - outdoor and indoor substation, gas-insulated, hybrid.
4. Cables and overhead lines - materials, construction, classification codes
5. Cables and overhead lines accessories.
6. Conductors designing in respect to maximum operating temperature of cable core.
7. Conductors designing in respect to short circuits effects.
8. Mechanical design of overhead lines.
9. Electrical protection theory - Fundamentals terms and classifications.
10. Types of electrical protection for electrical devices in distribution system.
11. Overvoltage in distribution system and protections against overvoltage.
12. Electrical strength of switchgears and lines, insulation coordination.

Work placements

Not applicable.

Aims

The aim of the course is to give students basic information about equipment for electrical energy distribution and learn them basic techniques and principles for the design of power lines. Furthermore, students should get familiar with the principles of electrical protection for the protection of power systems devices.

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

Labs are compulsory; correctly excused absence can be replaced by arrangment with the teacher.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Not applicable.

Recommended reading

Not applicable.

Classification of course in study plans

  • Programme EEKR-B Bachelor's

    branch B-SEE , 3. year of study, winter semester, compulsory

  • Programme EEKR-CZV lifelong learning

    branch ET-CZV , 1. year of study, winter semester, compulsory

Type of course unit

 

Lecture

26 hours, optionally

Teacher / Lecturer

Ing. Michal Krbal, Ph.D.
doc. Ing. Jaroslava Orságová, Ph.D.

Syllabus

1. Introduction - substations as part of power system, nominal voltages, operation mode of distribution networks, basic electrical schemes and parameters of switchgears.
2. Switchgears bays facilities - features and applications. Operation manipulation in substation.
3. Technology version of HV and MV substation - outdoor and indoor substation, gas-insulated, hybrid.
4. Cables and overhead lines - materials, construction, classification codes
5. Cables and overhead lines accessories.
6. Conductors designing in respect to maximum operating temperature of cable core.
7. Conductors designing in respect to short circuits effects.
8. Mechanical design of overhead lines.
9. State equation - solution methods of state equation.
10. Electrical protection theory - Fundamentals terms and classifications.
11. Types of electrical protection for electrical devices in distribution system.
12. Overvoltage in distribution system and protections against overvoltage.
13. Electrical strength of switchgears and lines, insulation coordination.

Fundamentals seminar

15 hours, compulsory

Teacher / Lecturer

Ing. Vojtěch Wasserbauer

Syllabus

1. Installed capacity of switchgears and group of consumers.
2. Installed transformer station.
3. Dimensioning of power cables and insulatin conductors
4. Dimensioning of flat conductors for busbars. Dimensioning of steel reinforced conductors with respect to mechanical pension.
5. Conductors protection in electric power distribution - overloading and short-circuit protection, assigning of protective elements.

Exercise in computer lab

9 hours, compulsory

Teacher / Lecturer

Ing. Vojtěch Wasserbauer

Syllabus

1. Feeder terminal - manipulation in switchgear, measuring in feeder, protection setting
2. Calculation of assembly table for overhead line.
3. Computation program for design of electrical line protection.

Laboratory exercise

15 hours, compulsory

Teacher / Lecturer

Ing. Michal Krbal, Ph.D.
Ing. Vojtěch Wasserbauer

Syllabus

1. Digital overcurrent protection testing.
2. Measuring of distance protection characteristic.
3. Measuring of comparative protection.
4. The testing sources in high voltage laboratory.
5. Excursion in HV and MV substation.