Course detail

Power Plant Electrical Equipment

FEKT-MKC-ELEAcad. year: 2022/2023

The course deals with basic electrical equipment for power generation in conventional power plants and heating plants. Emphasis is put on the operating characteristics of synchronous machines that determine the way of power control in the electricity grid. Students learn the generator protections function and extend their knowledge of electrical machines through the measurement on the generator model in laboratory. Further section deals with an electrical power output of the generator and the devices for own power plant consumption.

Language of instruction

Czech

Number of ECTS credits

6

Mode of study

Not applicable.

Learning outcomes of the course unit

The graduates are able to:
- explain methods of increase the efficiency of conventional steam power plants,
- describe the two basic types of synchronous alternator construction,
- explain the principles of their function,
- define the operating conditions of synchronous alternator,
- describe the behavior of synchronous generator during the short circuit ,
- describe the basic electrical alternator protection,
- discuss the advantages and disadvantages of different ways of connecting the alternator to the network,
- list the basic devices of power plant consumption,
- describe the method of designing of source for power plant consumption supplying.

Prerequisites

Students should know the principles of primary energy conversion into electrical energy used in conventional power plants, able to describe and explain the Rankin-Clausius thermal cycle and principle of synchronous machines function. General knowledge is required at the level of bachelor's degree, but it is advisable to have completed courses Electrical Power Generation and Electrical Machines.

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 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 12 points for the processing of laboratory protocols and 18 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 in course syllabus. The condition for the successful passing this exam is to get at least half of the maximum points.

Course curriculum

1. Increasing of thermal power stations heat circuit efficiency
2. Synchronous machine construction, basic parameters, fundamental principles, tests
3. Synchronous alternator under constant operation conditions - phasor diagram, equivalent circuit, voltage equations
4. Synchronous alternator operation at infinite bus, load angle characteristics
5. P-Q diagram for synchronous alternator, synchronization
6. Excitation systems and voltage control of synchronous alternator
7. Load angle characteristics of synchronous generator with voltage control
8. Primary power and frequency control, generator unit under islanding operation condition.
9. Synchronous alternator transients - tree phase short circuit, abnormal operations
10. Electrical protections for generators
11. Generator power outputs, arrangement of power station scheme
12. Power station internal consumption, dimension of internal consumption sources, its design and checking
13. Drives in stations auxiliaries - using and choice of electric motors, characteristics of powered devices

Work placements

Not applicable.

Aims

The course aims to complement and extend knowledge about the production of electricity in power plants and heating plants. It focuses primarily on their electrical part - the operating conditions of synchronous alternators and methods for their protection, design and control of own consumption supply.

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

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

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Dočekal, A., Bouček S. : Elektrárny II – Přednášky. Skripta ČVUT 1998 (CS)
Doležal J. a kol. Jaderné a klasické elektrárny. ČVUT v Praze 2011. ISBN 978-80-01-04936-5. (CS)

Recommended reading

Ondrášek, M.: Elektrárny II. Skripta VUT. 1988 (CS)

Elearning

Classification of course in study plans

  • Programme MKC-EEN Master's 1 year of study, winter semester, compulsory

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

Syllabus

1. Increasing of thermal power stations heat circuit efficiency
2. Synchronous machine construction, basic parameters, fundamental principles, tests
3. Synchronous alternator under constant operation conditions - phasor diagram, equivalent circuit, voltage equations
4. Synchronous alternator operation at infinite bus, load angle characteristics
5. P-Q diagram for synchronous alternator, synchronization
6. Excitation systems and voltage control of synchronous alternator
7. Load angle characteristics of synchronous generator with voltage control
8. Primary power and frequency control, generator unit under islanding operation condition.
9. Synchronous alternator transients - tree phase short circuit, abnormal operations
10. Electrical protections for generators
11. Generator power outputs, arrangement of power station scheme
12. Power station internal consumption, dimension of internal consumption sources, its design and checking
13. Drives in stations auxiliaries - using and choice of electric motors, characteristics of powered devices

Fundamentals seminar

12 hod., compulsory

Teacher / Lecturer

Syllabus

1. Calculation of optimal thermal power station heat circuit - optimize of reheating pressure.
2. Calculation of optimal thermal power station heat circuit - optimize of regeneration.
3. Steady state of synchronous generator - load angle
4. Three phase short circuit at synchronous generator terminals

Laboratory exercise

18 hod., compulsory

Teacher / Lecturer

Syllabus

1. Testing of negative phase sequence protection.
2. Measuring of operation characteristic of differential protection.
4. Measuring of transient at generator synchronization.
3. Measuring of synchronous alternator parameters.
5. Measuring of three phase short circuit time constants of synchronous alternator.

Project

9 hod., compulsory

Teacher / Lecturer

Syllabus

1. Optimal regeneration and heating parameters in the thermal circuit of a steam power plant
2. Calculation and graphical representation of the angular characteristics of the synchronous alternator, static stability reserve.

Elearning