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Tehnika
2017, vol. 72, br. 2, str. 243-247
jezik rada: srpski
vrsta rada: pregledni članak
objavljeno: 21/05/2017
doi: 10.5937/tehnika1702243K
Creative Commons License 4.0
Pregled problema vezanih za uticaj geomagnetski indukovane struje
Univerzitet u Beogradu, Elektrotehnički institut 'Nikola Tesla'

e-adresa: vojin@ieent.org

Sažetak

Geomagnetski indukovane struje (GIC) mogu uzrokovati niz neželjenih posledica vezano za normalno funkcionisanje elektroenergetskog sistema kao što su: zasićenje energetskih transformatora, neuobičajeni tokovi aktivne i reaktivne snage, naponske fluktuacije, pojava trećeg harmonika, pomak mrežne frekvencije i pogrešno delovanje relejne zaštite. U najgorem slučaju, navedeni poremećaji imaju za posledicu termičko razaranje energetskih transformatora i teško oštećenje dela ili čak čitavog nacionalnog elektroenergetskog sistema. Efekat istih posebno je izražen u visokonaponskim postrojenjima, čije su neutralne tačke direktno galvanski povezane sa sistemom uzemljenja, kakav je i slučaj sa transformatorskim stanicama nazivnog napona 110 kV (u vlasništvu JP EPS), odnosno 220 kV i 400 kV (u vlasništvu EMS a.d.). Cilj ovoga rada je da na pregledan način ukaže na probleme koji su vezani za prisustvo GIC-a. Takođe, akcenat je na mogućim preventivnim radnjama usmerenim na suzbijanju potencijalnih neželjenih posledica prisustva GIC.

Ključne reči

geomagnetski indukovane struje; elektroenergetski system

Reference

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