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KOMPARATIVNA ANALIZA RAZLIČITIH METODA DISPEČINGA REAKTIVNIH SNAGA IZMEĐU GENERATORA U ELEKTRANI

Authors: Pavlović, Jelena; Stančić, Lazar; Dragosavac, Jasna; Dobričić, Sava; Janda, Žarko;

KOMPARATIVNA ANALIZA RAZLIČITIH METODA DISPEČINGA REAKTIVNIH SNAGA IZMEĐU GENERATORA U ELEKTRANI

Abstract

Kratak sadržaj U radu su prikazana 2 metoda dispečinga reaktivnih snaga između generatora u jednoj elektrani. Ukupan zahtev za reaktivnom snagom se raspoređuje između generatora koji su priklјučeni na mrežu i koeficijenti opterećenja se održavaju jednakim. Kod prvog metoda, „prema mreži“, koeficijent opterećenja se računa kao odnos generisane reaktivne snage generatora i ukupnog stvarno raspoloživog reaktivnog opsega. Kod drugog metoda, „prema generatoru“, koeficijent opterećenja se računa prema znaku ukupnog zahteva. Ako je zahtev pozitivan (na terminalima generatora) koeficijent opterećenja se računa kao odnos generisane reakivne snage i pozitivnog dela opsega (od nule do maksimalno raspoložive reaktivne snage), a ako je zahtev negativan koeficijent opterećenja se računa kao odnos apsorbovane reakivne snage i negativnog dela opsega (od nule do minimalno raspoložive reaktivne snage). Prednost prvog režima raspodele je da svi generatori istovremeno dostižu svoje minimalne i maksimalne dozvoljene vrednosti, Qmin i Qmax, što za posledicu ima istovremenu aktivaciju limitera pobude pri promeni napona mreže. Prednost drugog metoda raspodele je održavanje jednake raspodele napona na krajevima generatora, što povolјno utiče na životni vek generatora. Samo ukoliko je napon na krajevima generatora ograničavajuči faktor i ovaj režim obezbeđuje istovremeno dostizanje Qmin i Qmax i istovremenu aktivaciju limitera.

Keywords

Naponsko-reaktivna karakteristika, Reaktivna snaga, Napon, Sinhroni generator, Reaktivna rezerva, Grupna regulacija, Pobuda

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This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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