ANALISIS PENYETELAN PROTEKSI ARUS LEBIH PENYULANG CIMALAKA DI GARDU INDUK 70 kV SUMEDANG

ABSTRAK: 20  kV  distribution  of  PLN    is    not  free  from  distractions  short  circuit.  Greatest  short circuit fault current occurs at  20 kV bus bar. This led to widespread outages as a result of the major security operation. The aim of this study was to identify the final interruption of short circuit current, short circuit  fault  current  to  calculate  and  determine  the  values  Over  Current  Relay  (OCR)  and Ground Fault Relay (GFR). This  study  purposed  to  calculate  short  circuit  current.  The  subject  of  research  is  the disturbances  that  occurred  in  Cimalaka  feeders.  The  data  required  for  this  study  were obtained from the Area Manager Distribution of Bandung. The data is analyzed to determine the  magnitude  of  short  circuit  current  and  Over  Current  Relay  (OCR)  and  Ground  Fault Relay (GFR) adjustment.
The results show  the short circuit fault current at 0% distance  from feeder is  2428,391 A  and  short  circuit  current  for  3  phase  is  2103,049  A  short  circuit  fault  current  and  the second phase of 570,406 A short circuit fault current one phase to the ground. The difference in  the  relay  settings  data  from  the  field  with  the  calculation  results  showed  that  the differences  are  not  too  significant,  so  the  ability  of  the  relays  is  still  good.  Thus,  the  feeder protection  relays  Cimalaka  at  70  kV  substation  Sumedang  still  good  and doesn’t  need  to  be reset. 
 Keywords:  Over  Current  Relay  (OCR),  Ground  Fault  Relay  (GFR),  Connecting  Disorders Brief, Relay Settings
Penulis: Fajar Pranayuda, Achmad Solichan, M.Toni Prasetyo
Kode Jurnal: jptlisetrodd120128

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