Fleksibilnost elektroenergetskog sistema / Zbornik CIGRE (2023). (str 847- 858)
AUTOR(I) / AUTHOR(S): Nikola Sučević, Saša Gligorov, Petar Nikolić
E-ADRESA / E-MAIL: nikola.sucevic@ieent.org
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DOI: 10.46793/CIGRE36.0847S
SAŽETAK / ABSTRACT:
U ovom radu izvršena je analiza rada diferencijalne zaštite transformatora sopstvene potrošnje bloka 2 hidroelektrane HE „Đerdap 1” pri pojavi kvara van zone štićenja, uvažavajući uticaj pojave zasićenja strujnih transformatora i algoritma rada zaštitnog uređaja. Pri kratkim spojevima u sistemu koji rezultuju strujama visokog intenziteta, može doći do pojave izobličenja talasnog oblika struja na sekundaru strujnih transformatora, što može da utiče na rad sistema zaštite. Analize su vršene na softverskom modelu zaštitnog uređaja i na stvarnom uređaju, injektiranjem struja u zaštitni uređaj primenom ispitnog kofera. Izvršeno je poređene odziva softverskog modela zaštitnog uređaja i stvarnog uređaja. Modelovanje mreže i analize vršene su u softverskom paketu DlgSILENT PowerFactory, a za ispitivanje rada zaštitnog uređaja korišćen je DOBLE ispitni kofer.
KLJUČNE REČI / KEYWORDS:
zasićenje strujnih mernih transformatora za zaštitu, diferencijalna zaštita transformatora
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