NASUTION, RISA HASANAH (2019) ANALISA PROTEKSI LOSS OF EXCITATION PADA GENERATOR DI PLTGU MUARA KARANG UNIT 1. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
One of the operating disruptions that occ Engineeringur in the synchronous generator is the loss of excitation. Where this interference will cause the generated reactive power generator is reduced even lost so that the synchronous generator must absorb the reactive power of the system. If this condition occurs continuously can cause damage to the stator coil, will occur worsening insulation and the stator end iron so as to cause short circuit, or interruption of soil relations in the future. So to anticipate the impact of such disturbances required a protection system. The protection system used in PLTGU Muara Karang Unit 1 is a minimum reactance relay. This essay discusses how to determine the value of loss excitation protection setting using minimum reactance relay and offset relay mho so that synchronous generator can work optimally. From the research calculation the minimum reactance relay usage will work on XA-setting value zone (-2.55 pu) with 0.5 seconds delay time, XB-setting (offset) of -0.1156 pu with 0.5 seconds delay time. As for offset relay mho will work on zone 1 and zone 2 for offset value of -0.109 pu with delay time 0.1 second. As for zone 1 for the base impedance (
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