410-2315/01 – Sytems of Electrical Machines Protection (PPCHES)
| Gurantor department | Department of Electrical Power Engineering | Credits | 4 |
| Subject guarantor | prof. Ing. Stanislav Mišák, Ph.D. | Subject version guarantor | prof. Ing. Stanislav Mišák, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Optional |
| Year | 3 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2011/2012 | Year of cancellation | 2013/2014 |
| Intended for the faculties | FEI | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
Student knows to apply varies types of protection devices to
electric machines and knows to design and to operate these protection apparatus.
Teaching methods
Lectures
Tutorials
Experimental work in labs
Other activities
Summary
Electrical machines protection apparatus based on electro-mechanical, analog nad digital principles as well as their integration to higher operation systems are studied.
Compulsory literature:
Feinbeg,R.:Modern power transformer practice, John Wiley & Sons, New York 1980
Recommended literature:
Feinbeg,R.:Modern power transformer practice, John Wiley & Sons, New York 1980
Additional study materials
Way of continuous check of knowledge in the course of semester
Conditions for credit:
Classification on points
Participation on laboratory excercises
All protocols of laboratory works
Test results
E-learning
Other requirements
There are not defined other requirements for student.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
Introduction to principles of protection devices of electric machines. Necessity of protection of electric machines, drives, insulation systems and its heating resistance.
Voltage stress, influence of nonsinusoidal supplying.
Definition of energy systems, dividing, sorting
- sorting according with voltage.
- switching station calculation.
Electric machines characteristic. Current and torque overload capacity of types of machines, start up current and limitation.Connection diagrams and its function.
Apparatus for electric machines protection-breakers, circuit breakers, voltage and current measurable transformers.Dimensioning of outer circuits.
Classification of protections of electric machins according to function, contact with superior system - overcurrent, heat, undervoltage, overvoltage, direct, electronic protection. Simple circuit with protection.
Connection of protection in energy systems.
Low voltage system - circuit with protections.
Protection setting - overcurrent, heat, undervoltage.
HV system (6 kV) - simple distribution with protections - practical connection, testing.
Protection adjusting - direct, electronic, Buchholz relais and special.MV system - practical connection, testing.
Protection selectivity. Analysis of complicated superior system, connection and selectivity. HV system - connection, testing.
Frequent connections of protection in energy system. From network to motors.Practical connection, testing. odzkoušení.
Relationship of short-circuit currents with protection devices. Calculation of protection.
Superior systems of protection by graet enterprises. Computer control of protections.
Protection structure. Indirect protections.
Dimensioning of protections. Network, short circuit power output in accordance with insalled electrical machines.
Laboratories:
Catalogues.
Important values calculation.
Connection of protections to system.
Systems and calculations, protocol.
Systems and calculations, protocol.
Systems and calculations, protocol.
Systems and calculations, protocol.
Systems and calculations, protocol.
Systems and calculations, protocol.
Calculation of combined protections.
Protection control.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction