KAJIAN KOORDINASI PROTEKSI STATOR GENERATOR PADA UNIT 2 PLTU BANTEN PT LESTARI BANTEN ENERGI
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
KURNIAWAN, DICKY
SP, Sampurno
SP, Sampurno
Subject
Teknik Elektro
Datestamp
2019-10-28 04:31:32
Abstract :
Generator is very important and vital element in power plant. Generator damage can lead to disruption in electrical power system. The generator may be damaged by the occurrence of interference such as stator short circuit, overload, overvoltage, and loss of excitation. Therefore, the protection system should be designed properly and appropriate to prevent damage to the generator. The protection tools that will be used to protect stator winding are differential relay, stator ground fault relay, and over current relay. After calculation on unit 2 PLTU Banten PT. LBE, the adjustment result is obtained for differential relay which differential current 2,749 A, restraint current 21.074 A, and CT ratio for CT1 and CT2 25000/5 A. For setting the stator ground fault relay, the voltage setting is 5 V with a protected stator winding of 98.74%. Furthermore, for setting the over current relay, the current setting is 25022.36 A and TMS of 0.3085
Generator is very important and vital element in power plant. Generator damage can lead to disruption in electrical power system. The generator may be damaged by the occurrence of interference such as stator short circuit, overload, overvoltage, and loss of excitation. Therefore, the protection system should be designed properly and appropriate to prevent damage to the generator. The protection tools that will be used to protect stator winding are differential relay, stator ground fault relay, and over current relay. After calculation on unit 2 PLTU Banten PT. LBE, the adjustment result is obtained for differential relay which differential current 2,749 A, restraint current 21.074 A, and CT ratio for CT1 and CT2 25000/5 A. For setting the stator ground fault relay, the voltage setting is 5 V with a protected stator winding of 98.74%. Furthermore, for setting the over current relay, the current setting is 25022.36 A and TMS of 0.3085
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