Course code ETeh6003
Credit points 3
Reliability of Electrical Devices
Total Hours in Course81
Number of hours for lectures18
Number of hours for seminars and practical classes6
Independent study hours57
Date of course confirmation12.03.2013
Responsible UnitInstitute of Engineering and Energetics
Course developer
Inženiertehnikas un enerģētikas institūts
Aleksejs Gedzurs
Ph.D.
Prior knowledge
ETeh5003, Conformity and Certification of Electrical Equipment
Course abstract
The aim of the course is to discuss reliability fundamentals, impact of the environmental factors and load on reliability of the electrical devices and reliability solution methods on the stage of design, acquaint with the complicated systems reliability and their analyses in SIMULINK environment , methods of reservation and their influence on reliability of the electrical systems, as well as evaluate an economical efficiency of the reliability level.
Learning outcomes and their assessment
1. Knowledge - laws and analysis methods of electric equipment reliability, accounting operation conditions on reliability and operation time of electric equipment – practical work;
2. Skills - compile reliability logic circuits of electric equipment, it’s modelling algorithm, analysis, applying in practice and interpretation of modelling results in MATLAB – SIMULINK – practical work and home work;
3. Competence - analyses of reliability parameters and life span of simple and complicated electric equipment during design and operation period – home work.
Course Content(Calendar)
1. Calculation and appliance of reliability parameters of electric equipment in design, production and operation stages. (lecture - 1h, practical work - 1h)
2. Analytical calculation methods of reliability methods, general reliability laws, gamma percentile resource. (lecture - 1h, practical work - 1h)
3. Restoration intensity, probability, average time, maintenance, readiness and downtime coefficients of equipment workability. (lecture - 1h, practical work - 1h)
4. Analyses of electric equipment reliability using exponential and Weibull distribution laws. (lecture - 1h, practical work - 1h)
5. Electric load, operation ambient condition and operation mode influence on reliability of electric equipment (1st home work). (lecture - 1h, practical work - 1h)
6. Types of reservation of electric equipment for reliability improvements, reservation order and effectiveness. (lecture - 1h, practical work - 1h)
7. Reliability analyses of complicated electric equipment systems. Reliability analyses of repairable equipment. (lecture - 1h, practical work - 1h)
8 Stages of failure diagnostics and it’s meaning in improvement of equipment reliability. (lecture - 1h, practical work - 1h)
9. Condition assessment method and reliability analysis of simple repairable electric system. (lecture - 1h, practical work - 1h)
10. Reliability analyses of double repairable electric system. (lecture - 1h, practical work - 1h)
11. Restoration intensity impact on lifespan of repairable system. (lecture - 1h, practical work - 1h)
12. Economical analysis of electrical equipment and system reliability level (lecture - 1h, practical work - 1h)
Requirements for awarding credit points
To award credit points practical work should be completed, independent homework formatted, presented and defended.
Description of the organization and tasks of students’ independent work
Independent homework consists from two parts:
1) reliability analysis of electronic device;
2) reliability analysis of electric system.
Criteria for Evaluating Learning Outcomes
Assessment consist of the following parts – practical and homework calculations (4), homework presentation (2), defense (2). To get 9 – 10 assessment – student can choose additional exercises.
Compulsory reading
1. Šnīders A. Automātikas ierīču un sistēmu drošums. Teorētiskie pamati un aprēķinu metodika: Mācību līdzeklis maģistrantiem. Jelgava: LLU, 1998. 80 lpp.
2. Plūme I. Elektroiekārtu ekspluatācija un remonts: Mācību līdzeklis. Jelgava: LLU, 2008. 105 lpp.
3. Анищенко В.А. Надежность систем электроснабжения: Учебное пособие. Мн: Технопринт, 2001. 160 с.
Further reading
1. Šnīders A. Automātiskās vadības ierīču un sistēmu drošuma teorētiskie pamati: Mācību līdzeklis. Jelgava: LLA, 1987. 49 lpp.
2. Šnīders A. Kokapstrādes automatizācija. Rīga: Avots, 1989. 158 lpp.
3. Patrick D.T.O'Connor. Practical Reliability Engineering. Chichester etc.: John Wiley & Sons, 1999. XXIV, 43 431 p.
Periodicals and other sources
Enerģija un pasaule. ISSN 1407- 5911. Profesionāls žurnāls par enerģētikas risinājumiem/ http://www.energijaunpasaule.lv
Notes
The study course is included in the specialized part of the academic master’s study programme “Agricultural engineering” subprogramme “Energetics”