KOORDINASI PROTEKSI OVER CURRENT RELAY
(OCR) DAN GROUND FAULT RELAY (GFR) PADA
TRANSFORMATOR DAYA 2 150/20 KV 60 MVA DI
GARDU INDUK DURI KOSAMBI
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Fadli, Nadya
Suwarno, Suwarno
Suwarno, Suwarno
Subject
Teknik Elektro
Datestamp
2019-10-28 04:31:21
Abstract :
At the medium voltage distribution network, a fault is often recurred that may descreasing continuity of electrical power will be distributed to customer. To overcome this problem, at the network usually installed protective equipment which can disconnect itself when there is a short circuit current, so that continuity of electrical power distribution constant preserve. The simple use of over current relay and ground fault relay and then reliability in operation, has made this over current relay widely used. The focus of this thesis is coordination of protection system between over current relay and ground fault relay as protective equipment especially on Hias feeder, Duri Kosambi Substations, Cengkareng Area. Where the largest short circuit current at 3 phase is 13062,217 A and the largest short circuit current at 1 phase is 955,426 A. For the main relay working time on OCR is 0,24 second while the main relay working time on GFR is 0,39 second
At the medium voltage distribution network, a fault is often recurred that may descreasing continuity of electrical power will be distributed to customer. To overcome this problem, at the network usually installed protective equipment which can disconnect itself when there is a short circuit current, so that continuity of electrical power distribution constant preserve. The simple use of over current relay and ground fault relay and then reliability in operation, has made this over current relay widely used. The focus of this thesis is coordination of protection system between over current relay and ground fault relay as protective equipment especially on Hias feeder, Duri Kosambi Substations, Cengkareng Area. Where the largest short circuit current at 3 phase is 13062,217 A and the largest short circuit current at 1 phase is 955,426 A. For the main relay working time on OCR is 0,24 second while the main relay working time on GFR is 0,39 second
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