| Title | Analiza utjecaja prenapona na rad energetskih transformatora |
| Author | Tomislav Šanje |
| Mentor(s) | Zoran Baus (thesis advisor)
|
| Abstract | U radu je bilo potrebno analizirati utjecaj prenapona na energetski transformator, to jest, što
se događa unutar transformatora kada na njega nailazi prenaponski val. Zbog svoje prirode,
vrlo strmog čela vala, ali vrlo kratkog trajanja, prenaponi su specifični jer sadrže puno više
frekvencije od standardnih napona prisutnih u transformatoru. Nakon upoznavanja pojave
prenapona i njegovog utjecaja, bilo je potrebno prije same analize modelirati transformator.
On je u ovom radu modeliran kapacitetom između namota i kapacitetom prema zemlji.
Prenaponski val modelira je pravokutnim valom koja je u ovom slučaju relativno dobra
aproksimacija događanja. Simulacija je rađena u Matlabu. Iz rezultata se vidi da prenaponski
val puno više utječe na raspodjelu napona unutra transformatora kada je njegove zvjezdište
neuzemljeno, jer praktički udvostručava napona unutar transformatora. |
| Keywords | Power transformer overvoltage atmospheric overvoltage capacity distribution voltage amplitude frequency |
| Parallel title (English) | Analysis of the overvoltage impact on the operation of power transformers |
| Committee Members | Zoran Baus (committee chairperson)
Srete Nikolovski (committee member)
Goran Knežević (committee member)
|
| Granter | Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek |
| Lower level organizational units | Department of Power Engineering
Chair of Power Systems and Substations |
| Place | Osijek |
| State | Croatia |
| Scientific field, discipline, subdiscipline | TECHNICAL SCIENCES
Electrical Engineering
Power Engineering
|
| Study programme type | university |
| Study level | graduate |
| Study programme | Graduate University Study Programme in Electrical Engineering; branch: Communications and Informatics, Power Engineering |
| Study specialization | Power Engineering |
| Academic title abbreviation | mag.ing.el. |
| Genre | master's thesis |
| Language | Croatian |
| Defense date | 2015-10-06 |
| Parallel abstract (English) | This work is necessary to analyze the impact of surges in power transformer, that is, what is
happening inside the transformer when it encounters the overvoltage wave. Because of its
nature, a very steep wave front, but very short duration, voltages are specific because they
contain much higher frequency than the standard voltage present in the transformer. After
getting to know the voltage spikes and its impact, it was necessary prior to the analysis model
transformer. It is in this paper modeled a capacity between windings and capacity to ground.
The surge wave modeled by rectangular wave which is in this case a relatively good
approximation of events. The simulation was conducted in Matlab. The results show that the
surge wave is affecting the distribution of power in the transformer when its star-unearthed,
because virtually doubles the voltage inside the transformer |
| Parallel keywords (Croatian) | Energetski transformator prenapon atmosferski prenapon kapacitet raspodjela napona amplituda frekvencija |
| Resource type | text |
| Access condition | Open access |
| Terms of use |  |
| URN:NBN | https://urn.nsk.hr/urn:nbn:hr:200:477957 |
