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Distributie van elektrische energie (Netwerken) KUL Groep T 2024–2025: Samenvatting + Examenvragen

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Deze samenvatting bevat alle leerstof die behandeld werd in de hoorcolleges van Tiene Nobels tijdens het academiejaar 2024–2025. Daarnaast zijn er examenvragen van voorgaande jaren opgenomen. De samenvatting is per thema gestructureerd en uitgewerkt in duidelijke alinea’s met de nodige achtergrondinformatie. Tijdens het studeren markeerde ik steeds de essentiële inhoud met verschillende fluostiften. De documenten zijn ook beschikbaar in andere bestandsformaten; bij interesse mag je gerust contact met me opnemen.

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INDUSTRIËLE INGENIEURSWETENSCHAPPEN
BAC 2
ELEKTROMECHANICA




Campus Groep T




Netten
T2ODE 1




Vierkante Passer




2024-2025

, 1 Het elektriciteitsnetwerk...............................................................................................3
1.1 Netspanning........................................................................................................................... 3
1.2 Thornton Bank....................................................................................................................... 3
1.2.1 Context:.............................................................................................................................................3

1.2.2 Spanning van het net.......................................................................................................................4

1.2.3 Fase van het net...............................................................................................................................4

1.3 Generatie van energie...........................................................................................................5
1.4 Netstructuur........................................................................................................................... 5
1.4.1 Radiale structuur:.............................................................................................................................5

1.4.2 Ring structuur...................................................................................................................................5

1.4.3 Gecombineerde structuur:..............................................................................................................6

1.4.4 Bijkomende informatie.....................................................................................................................6

1.5 Vermogensbalans.................................................................................................................6

2 Bescherming in lage spanningsnetten........................................................................7
2.1 Elektrische gevaren...............................................................................................................7
2.1.1 Gevaren bij installaties:...................................................................................................................7

Thermische gevaren:................................................................................................................................7

2.1.2 Direct gevaren voor mensen...........................................................................................................7

2.1.3 Indirect gevaar voor mensen..........................................................................................................8

2.2 Veilig werken met elektriciteit..............................................................................................9
2.2.1 Veilig werken.....................................................................................................................................9

2.2.2 Veilige installaties............................................................................................................................9

2.2.3 Regelgeving......................................................................................................................................9

2.3 Elektrische materialen........................................................................................................11
2.4 Overstroom bescherming...................................................................................................11
2.4.1 Vermogensschakelaars.................................................................................................................13

2.4.2 Soorten schakelaren......................................................................................................................13

2.5 Bescherming tegen elektrische schokken........................................................................14
2.5.1 Preventie.........................................................................................................................................14

2.5.2 Aarden/Equipotentiaal verbindingen...........................................................................................14

2.5.3 Veilige extra lage voltages............................................................................................................14

2.5.4 Veiligheidsvoltage..........................................................................................................................14

2.5.5 Aardlekschakelaar/ verliesstroomschakelaar.............................................................................15

2.6 Aardingsystemen................................................................................................................ 15
2.6.1 TT.....................................................................................................................................................15

2.6.2 TN-C.................................................................................................................................................16

2.6.3 TN-S.................................................................................................................................................16
2.6.3.1 Wiskundige benadering van een TN-S systeem........................................................................................17

2.6.4 TN-C-S..............................................................................................................................................17

2.6.5 IT met isolatie fout..........................................................................................................................18

2.6.6 Overzicht.........................................................................................................................................19




Vierkante Passer

, 3 Vermogen kwaliteit...................................................................................................... 19
3.1 Introductie............................................................................................................................ 19
3.2 Factoren die het EMC beïnvloeden....................................................................................20
3.2.1 Aarding............................................................................................................................................20

3.2.2 Signaal input/output.......................................................................................................................20

3.2.3 Spanningsbron...............................................................................................................................20

3.2.4 Radiatie............................................................................................................................................20

3.3 Vermogen beschikbaarheid................................................................................................20
3.4 Verschillende fenomenen...................................................................................................21
3.4.1 Frequentievariaties.........................................................................................................................21

3.4.2 Langzame spanningsfluctuaties...................................................................................................21

3.4.3 Flikkering.........................................................................................................................................21

3.4.4 Spanningsdips en korte onderbrekingen....................................................................................21

3.4.5 Harmonischen.................................................................................................................................21

3.4.6 Transiënten.....................................................................................................................................22

3.4.7 Unbalance.......................................................................................................................................22

4 Diode gelijkrichters..................................................................................................... 22
4.1 Een fasige diode gelijkrichters...........................................................................................22
4.1.1 Pulse nummer................................................................................................................................23

4.1.2 Weerstand belasting......................................................................................................................23
4.1.2.1 Batterij of back-EMK belasting....................................................................................................................23

4.1.3 Inductieve last................................................................................................................................24
4.1.3.1 Transiënt.........................................................................................................................................................24

4.1.3.2 Netstroom/ commutatie-overlap..................................................................................................................25

4.1.4 Capacitieve last..............................................................................................................................25

4.2 Driefasige diode gelijkrichters...........................................................................................26
4.2.1 Weerstand belasting......................................................................................................................26

4.2.2 Inductieve last.................................................................................................................................27
4.2.2.1 Power factor...................................................................................................................................................28

4.2.3 Capacitieve last..............................................................................................................................29

5 Harmonische................................................................................................................ 29
5.1 Definities.............................................................................................................................. 30
5.2 Circuitmodellering...............................................................................................................31
5.3 Vermogen definities............................................................................................................31
5.3.1 Actief vermogen.............................................................................................................................32

5.3.2 Schijnbaar vermogen.....................................................................................................................32

5.3.3 Reactief vermogen.........................................................................................................................32

5.3.4 Power factor....................................................................................................................................33
5.3.4.1 De displacemnet power factor (DPF)..........................................................................................................33

5.3.5 Conclusie power factor..................................................................................................................33




Vierkante Passer

, 5.4 Gevolgen.............................................................................................................................. 34
5.4.1 Overbelasting..................................................................................................................................34

5.4.2 Resonantie......................................................................................................................................35

5.5 Oplossingen........................................................................................................................ 36
5.5.1 Scheiden..........................................................................................................................................37

5.5.2 Over dimensionering en derating.................................................................................................37

5.5.3 Detuned reactor/ anti harmonische spoel...................................................................................37

5.5.4 Filters..............................................................................................................................................38
5.5.4.1 Passieve filters...............................................................................................................................................38

5.5.4.2 Actieve filter...................................................................................................................................................38

5.5.4.3 Hybride............................................................................................................................................................38

6 Onbalans...................................................................................................................... 39
6.1 Eenfasige belasting in een drie fase systeem..................................................................39
6.2 Ongebalanceerde toestand................................................................................................40
6.2.1 Analyse van onbalans: Fortescue-methode................................................................................40
6.2.1.1 Directe component........................................................................................................................................41

6.2.1.2 Inverse component........................................................................................................................................41

6.2.1.3 Homopolaire component..............................................................................................................................41

6.3 Homopolaire of nulsequentiecomponenten.....................................................................42
6.3.1 Het niet bestaan van nulsequentiecomponenten.......................................................................42

6.3.2 Neutrale geleiders en de nulsequentiecomponent.....................................................................43

6.3.3 Overzicht.........................................................................................................................................43

6.3.4 Harmonische + onbalans...............................................................................................................44

6.4 De gevolgen van onbalans bij eenfasige belastingen.....................................................45
6.4.1 Neutral shift.....................................................................................................................................45

6.4.2 Gevolgen op de nulleider..............................................................................................................45

6.5 Vermijden van problemen...................................................................................................46




Vierkante Passer

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Samenvattingen Viekante Passer

Op mijn Stuvia-pagina verkoop ik samenvattingen van de vakken die gegeven worden binnen de opleidingen industriële ingenieur aan campus Group T van de KU Leuven, in de afstudeerrichting Elektromechanica. Bij vragen mag je me altijd een bericht sturen.

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