MENDETEKSI GANGGUAN PADA MOTOR CLOSED COOLING WATER FAN GAS TURBIN 2.1 DI AREA PLTGU BLOK 2 PT. PJB UP MUARA KARANG
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Naibaho, David Pranata
Hariyati, Rinna
Afrianda, Rio
Hariyati, Rinna
Afrianda, Rio
Subject
Teknik Elektro
Datestamp
2020-01-16 11:57:29
Abstract :
In PLTGU Block 2 UP Muara Karang has Closed Cooling Water system which is an auxiliary cooling system that serves to cool the generating equipment in turbine gas area such as Lube Oil, Seal Oil, Gas H2, Purging Air Compressor, Instrument and Service Compressor. The Closed Cooling Water cooling system uses a fan with a closed system as a cooling water cooling medium (Water demineralisation) that passes through the Heat Exchanger. A good performance of this cooling system is to use the reliability of the Closed Cooling Water Fan (CCWF) so that cooling water of the hot auxiliary apparatus can be cooled back by the fan so that the temperature at the generating equipment can be maintained and the PLTGU Block 2 unit remains reliable. one part that often experience interference is Closed Cooling Water Fan motor. The problem that occurs is there is damage to the motor bearings that cause high vibration due to lifetime bearing. Troubleshooting is done to perform corrective maintenance that is replacement bearings. At motor current motor failure from 31 A to 35 A, After maintenance of motor current down to 31 A. Maintenance of motor temperature before repair at bearing side of 60 ºC to 45 º C and on winding side 58 º C to 47 º C, motor temperature at bearing side and the winding side has decreased. The result of maintenance, has been fulfilled at the motor current, vibration and temperature so that the motor is feasible to operate.
In PLTGU Block 2 UP Muara Karang has Closed Cooling Water system which is an auxiliary cooling system that serves to cool the generating equipment in turbine gas area such as Lube Oil, Seal Oil, Gas H2, Purging Air Compressor, Instrument and Service Compressor. The Closed Cooling Water cooling system uses a fan with a closed system as a cooling water cooling medium (Water demineralisation) that passes through the Heat Exchanger. A good performance of this cooling system is to use the reliability of the Closed Cooling Water Fan (CCWF) so that cooling water of the hot auxiliary apparatus can be cooled back by the fan so that the temperature at the generating equipment can be maintained and the PLTGU Block 2 unit remains reliable. one part that often experience interference is Closed Cooling Water Fan motor. The problem that occurs is there is damage to the motor bearings that cause high vibration due to lifetime bearing. Troubleshooting is done to perform corrective maintenance that is replacement bearings. At motor current motor failure from 31 A to 35 A, After maintenance of motor current down to 31 A. Maintenance of motor temperature before repair at bearing side of 60 ºC to 45 º C and on winding side 58 º C to 47 º C, motor temperature at bearing side and the winding side has decreased. The result of maintenance, has been fulfilled at the motor current, vibration and temperature so that the motor is feasible to operate.
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