Perancangan Kontrol Berbasis Logic Solver pada Proses Start Up Gas Turbine Compressor di PT Saka Indonesia Pangkah Limited

Rahman, Bagas Aulia (2020) Perancangan Kontrol Berbasis Logic Solver pada Proses Start Up Gas Turbine Compressor di PT Saka Indonesia Pangkah Limited. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Diketahui bahwa Gas Turbine Compressor (GTC) pada PT Saka Indonesia Pangkah Limited (PT SIPL) mengalami kesulitan dalam proses start up akibat suhu lingkungan yang rendah. Telah dilakukan perancangan sistem kontrol berbasis logic solver pada sistem start up GTC di PT SIPL untuk mengendalikan laju aliran bahan bakar dan laju aliran massa udara agar nilai kalor hasil pembakaran dapat terpenuhi. Perancangan sistem kontrol diawali dengan mengidentifikasi pengaruh suhu lingkungan terhadap proses start up GTC, dilanjutkan dengan memodelkan masing-masing komponen sesuai dengan P&ID dari GTC serta merancang logic solver dengan membuat database berisi pasangan data input serta output yang sesuai. Setelah itu, setiap komponen digabungkan dengan wiring diagram lengkap dengan sistem pengendalian pada Simulink. Berdasarkan hasil simulasi, logic solver mampu memberikan nilai laju aliran massa bahan bakar dan udara yang sesuai sehingga suhu set point dapat terpenuhi. Hal ini terbukti dengan hasil uji dimana ketiga sampel suhu lingkungan yang diberikan yaitu 23,33oC, 27.5oC dan 31.89oC, sistem mampu mencapai suhu set point yang telah ditentukan yaitu secara berurutan 815.6oC, 815.9oC dan 815.7oC. =========================================================== It is known that the Gas Turbine Compressor (GTC) at PT Saka Indonesia Pangkah Limited (PT SIPL) had difficulty in the start up process due to low ambient temperatures. A logic solver based control system has been designed on the GTC start up system at PT SIPL to control the fuel flow rate and air mass flow rate so that the heating value of the combustion results can be fulfilled. The control system design begins by identifying the effect of environmental temperature on the GTC start up process, followed by modeling each component in accordance with the P&ID of the GTC and designing the logic solver by creating a database containing the appropriate input and output data pairs. After that, each component is combined with a complete wiring diagram with a control system on Simulink. Based on the simulation results, the logic solver is able to provide the appropriate mass flow rate of fuel and air so that the set point temperature can be met. This is proven by the results of tests in which the three given environmental temperature samples are 23.33oC, 27.5oC and 31.89oC, the system is able to reach a predetermined set point temperature, namely 815.6oC, 815.9oC and 815.7oC.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Gas Turbine Compressor, Logic solver, Sistem Start Up, Air to Fuel Ratio ============================================================ Gas Turbine Compressor, Logic solver, Sistem Start Up, Air to Fuel Ratio
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA174 Computer-aided design.
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User: Bagas Aulia Rahman
Date Deposited: 08 Sep 2020 02:46
Last Modified: 08 Sep 2020 02:46
URI: https://repository.its.ac.id/id/eprint/81814

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