Evaluasi Sistem Proteksi Motor Primary Air Fan Di PLTU Tanjung Jati B Unit 3

Imah, Siti Sholihatul and , Agus Supardi, S.T., M.T (2021) Evaluasi Sistem Proteksi Motor Primary Air Fan Di PLTU Tanjung Jati B Unit 3. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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The primary air fan is a reliable equipment for electricity production at PLTU Tanjung Jati. Its function is to help speed up the process of burning coal with oxygen (primary air) so that the combustion process is efficient. Electrical equipment such as motors in generators is common and is very susceptible to overcurrent disturbances. Over Current Relay (OCR) is a motor safety relay from overcurrent disturbances by stopping the flow of overcurrent to the load by PMT (circuit breaker). This study aims to provide an evaluation of the error protection system to make it more sensitive, fast, and selective when there is a disturbance. This research was carried out by looking for data from PT PLN Tanjung Jati, studying journal references both national and international, calculating and simulating research-related data. The parameters used in this study include 10 kV working voltage, 2110 kW motor capacity, 88% power factor, 138.43 A nominal current, and inverse longtime curve characteristics. The final results of this study indicate that the over current relay operating time setting that is used is too high for the 3-phase short circuit current so that it damages the motor cable itself. The solution is to reset the operation time of the primary air fan motor OCR relay by changing the TMS value of 0.7 steps and top by 0.8 seconds to TMS of 0.6 steps and top of 0.7 seconds accompanied by a pick-up current of 1.81 steps or 145 A, about 10% of the the working current is 148 A.

Item Type: Karya ilmiah (Skripsi)
Uncontrolled Keywords: primary air fan motor, short circuit, overcurrent relay, ETAP 12.6.0
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Fakultas Teknik > Teknik Elektro
Date Deposited: 24 Apr 2021 01:35
Last Modified: 24 Apr 2021 01:35
URI: http://eprints.ums.ac.id/id/eprint/90615

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