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Lecturer(s)
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Stohnii Kyrylo
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Pihera Josef, Doc. Ing. Ph.D.
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Polanský Radek, Prof. Ing. Ph.D.
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Trnka Pavel, Prof. Ing. Ph.D., MBA
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Hornak Jaroslav, Ing. Ph.D.
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Course content
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1. Introduction, Diagnostics System, Types of Diagnostics, Diagnostic Theory, Diagnostic Signals and Quantities 2. Diagnostic processes, diagnostics quality, diagnostics of systems with sudden and gradual failures 3. Diagnostics and monitoring - Dielectric methods of diagnostics Loss factor, capacity, conductivity, insulation resistance, electrical strength 4. Diagnostics and monitoring - Dielectric methods of diagnostics - time and frequency measurement, polarization and depolarization currents, recovered voltage 5. Diagnosis and monitoring of partial discharges 6. Diagnostics and monitoring of diagnostics of individual subsystems of electrical machines - chemical methods, optical methods, acoustic methods and vibrations, electrical methods 7. Diagnostic Methods of Structural Analysis Insulation System 8. Diagnostics of transformers insulation systems, methods used, online, off-line, diagnostics system 9. Diagnostics of small rotating machines - insulating systems, used methods, online, off-line, diagnostics system 10. Diagnostics of large rotating machines - isolation systems, methods used, online, off-line, diagnostics system 11. Cable diagnostics - insulation systems, methods used, online, off-line 12. Calibration, accreditation of testing laboratories, comparative tests, international comparison 13. New methods of diagnostics of electric machines AC and DC systems, application examples Practical: 1. Introduction to practical lessons 2. Partial Discharges 1 - Theory and Practice 3. Partial Discharges 2 - Basic Models of the Global Computation Method 4. Induction sensing probes - basic models of capacitive, inductive sensors 5. Thermal dependence loss factor 6. Loss factor frequency response 7. Loss factor voltage dependence 8. Direct methods of absorption and resorption, recovered voltage 9. Special Diagnostic Methods Examples and Applications 10. Excursion 1 11. Excursion 2 12. Credit exam
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Learning activities and teaching methods
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- Preparation for laboratory testing; outcome analysis (1-8)
- 8 hours per semester
- Undergraduate study programme term essay (20-40)
- 20 hours per semester
- Practical training (number of hours)
- 20 hours per semester
- Contact hours
- 39 hours per semester
- Preparation for an examination (30-60)
- 40 hours per semester
- Contact hours
- 20 hours per semester
- unspecified
- 45 hours per semester
- Attendance on a field trip (number of real hours - maximum 8h/day)
- 6 hours per semester
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| prerequisite |
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| Knowledge |
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| explanation of basic principles of electrical machines |
| material characteristics and basic orientation in that topic |
| Skills |
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| test circuit setup |
| explain the basic measured values |
| to apply basic principles of measuring techniques |
| learning outcomes |
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| Knowledge |
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| describe the partial systems of electrical machines in terms of diagnostics |
| explain the principle and system of diagnostics |
| design a diagnostic system |
| justify the strategy diagnostic approach |
| compare materials in terms of parameters |
| explain the processes in the insulation system |
| Skills |
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| measure the necessary diagnostic parameters |
| analyze the results of the diagnostics |
| verify the condition of the electric machine |
| Competences |
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| N/A |
| teaching methods |
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| Knowledge |
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| Lecture |
| Lecture with visual aids |
| Skills |
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| Practicum |
| Laboratory work |
| Field trip |
| Competences |
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| Practicum |
| Laboratory work |
| assessment methods |
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| Knowledge |
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| Combined exam |
| Skills |
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| Individual presentation at a seminar |
| Skills demonstration during practicum |
| Competences |
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| Skills demonstration during practicum |
| Individual presentation at a seminar |
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Recommended literature
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Hauschild, W. High-Voltage Test and Measuring Techniques. 2014.
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König, D., Rao, Y.N.:. Partial discharges in electrical power apparatus. 1993.
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Küchler, A. High Voltage Engineering. 2018.
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Mentlík, Mentlík. Diagnostika elektrických zařízení,. 2008.
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Mentlík, V. Dielektrické prvky a systémy. 2006.
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Stone, G.C. Electrical insulation for rotating machines. 2004.
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