PERBAIKAN COS PHI (POWER FAKTOR) PADA MOTOR LISTRIK DENGAN PENAMBAHAN BEBAN KAPASITIF (KAPASITOR)
DI PLTA KRACAK PT. INDONESIA POWER SAGULING POMU
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Kusworo, Ragil
Tresya M, Kartika
Tresya M, Kartika
Subject
Teknik Elektro
Datestamp
2022-11-01 01:27:32
Abstract :
The oil circulation motor operates continuously while the unit is operating. Meanwhile, if the motor oil lifter is in normal condition, the operation of the oil lifter is only when the unit starts or unit stops. This is because when the unit rotation reaches the nominal rotating speed. There was a problem at the Kracak hydropower plant where the frictional force on the thrust bearing was quite high even though the unit had reached the nominal speed. The frictional force causes an increase in the temperature of the thrust bearing. To reduce the friction that occurs, the oil lifter pump is operated continuously. So the friction that occurs will be reduced. However, the continuous operation of the oil lifter pump has a direct impact on increasing the PS value (Self-Use) of the Kracak Hydroelectric Power Plant. In addition, the power factor of the existing motor, both motor oil circulation and motor oil lifter, is not optimal. In the motor oil lifter, the cos phi value is 0.73 and the cosphi value for the motor oil circulation is 0.69, which is a low value. This improvement is carried out to get the PS value at the Kracak hydropower plant with a good value or an optimal value. This improvement is carried out by adding a delta-configured capacitor so that the inductive load of the motor is reduced.
The oil circulation motor operates continuously while the unit is operating. Meanwhile, if the motor oil lifter is in normal condition, the operation of the oil lifter is only when the unit starts or unit stops. This is because when the unit rotation reaches the nominal rotating speed. There was a problem at the Kracak hydropower plant where the frictional force on the thrust bearing was quite high even though the unit had reached the nominal speed. The frictional force causes an increase in the temperature of the thrust bearing. To reduce the friction that occurs, the oil lifter pump is operated continuously. So the friction that occurs will be reduced. However, the continuous operation of the oil lifter pump has a direct impact on increasing the PS value (Self-Use) of the Kracak Hydroelectric Power Plant. In addition, the power factor of the existing motor, both motor oil circulation and motor oil lifter, is not optimal. In the motor oil lifter, the cos phi value is 0.73 and the cosphi value for the motor oil circulation is 0.69, which is a low value. This improvement is carried out to get the PS value at the Kracak hydropower plant with a good value or an optimal value. This improvement is carried out by adding a delta-configured capacitor so that the inductive load of the motor is reduced.
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