PERBANDINGAN ANTARA PENGUJIAN DAN PERHITUNGAN BERDASARKAN DATA GANGGUAN MENGGUNAKAN TOOL SMRT 46D PADA RELAY DIFERENTIAL MOTOR MDFP 2A DI PLTU PT PLN (Persero) UPK TELUK SIRIH
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
OKY KURNIAWAN, AUDITYO
Christiono, Christiono
Christiono, Christiono
Subject
Teknik Elektro
Datestamp
2022-11-07 06:23:22
Abstract :
The MDFP motor is the main component in the steam power plant because it supplies water to the drum as the main raw material for the steam formation process. MDFP motors are equipped with security, one of which is Relay Differential. In the MDFP 2A Motor, a disturbance that caused the Differential Relay to work occurred in September 2021, causing the MDFP2A motor to trip and filling the drum with water. To solve problems with the MDFP 2A Motor, it is necessary to check the motor and motor protection more deeply. The purpose of this study is to analyze the interference of the Differential Relay working on the MDFP 2A motor. This research method includes collecting Literature Studies, then collecting data starting from SLD, Specifications, disturbance data. Then check the MDFP 2A Motor, Breaker, CT, and wiring. Next, perform a Differential Relay test simulation using SMRT 46 D Tools and compare calculations based on fault data and field tests. The calculation results based on the fault data obtained that the QB differential protection works, where the R phase value of the motor star point current is less than 6A. As for the S and T phases more than 6A. Furthermore, the results of the experiment 2 times were simulated using the SMRT46D Tool, which was obtained in the first test the Differential Relay worked and the second test did not work according to the installed settings. From the results of simulation experiments, and field test data stated in good condition. Differential Quick Break protection works because the polarity of the power supply cable is reversed on the motor.
The MDFP motor is the main component in the steam power plant because it supplies water to the drum as the main raw material for the steam formation process. MDFP motors are equipped with security, one of which is Relay Differential. In the MDFP 2A Motor, a disturbance that caused the Differential Relay to work occurred in September 2021, causing the MDFP2A motor to trip and filling the drum with water. To solve problems with the MDFP 2A Motor, it is necessary to check the motor and motor protection more deeply. The purpose of this study is to analyze the interference of the Differential Relay working on the MDFP 2A motor. This research method includes collecting Literature Studies, then collecting data starting from SLD, Specifications, disturbance data. Then check the MDFP 2A Motor, Breaker, CT, and wiring. Next, perform a Differential Relay test simulation using SMRT 46 D Tools and compare calculations based on fault data and field tests. The calculation results based on the fault data obtained that the QB differential protection works, where the R phase value of the motor star point current is less than 6A. As for the S and T phases more than 6A. Furthermore, the results of the experiment 2 times were simulated using the SMRT46D Tool, which was obtained in the first test the Differential Relay worked and the second test did not work according to the installed settings. From the results of simulation experiments, and field test data stated in good condition. Differential Quick Break protection works because the polarity of the power supply cable is reversed on the motor.
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