Perancangan Active Fault Tolerant Control Akibat Kesalahan Sensor Dan Aktuator Pada Sistem Pengendalian Level Steam Drum Boiler Di PLTU Lontar

Pramono, Mochammad Luthfi Satria (2022) Perancangan Active Fault Tolerant Control Akibat Kesalahan Sensor Dan Aktuator Pada Sistem Pengendalian Level Steam Drum Boiler Di PLTU Lontar. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Steam drum boiler merupakan salah satu komponen didalam PLTU yang paling rawan terjadi kesalahan. Operasi didalam steam drum boiler sangat menentukan kualitas uap yang digunakan untuk memutar turbin. Pada PLTU Lontar diperlukan sistem kendali yang memiliki kehandalan dan kestabilan tinggi untuk menjaga nilai air agar tetap pada Normal Water Level (NWL). Untuk menjaga nilai level tetap pada NWL, variable yang di kendalikan adalah laju aliran feedwater melalui kerja boiler feed water pump. Bentuk kesalahan yang dapat terjadi pada boiler drum uap adalah kesalahan adalah sensor dan aktuator. Pada Tugas Akhir ini dilakukan perancangan active fault tolerant control (AFTC) yang mampu bekerja ketika terdapat kesalahan pada sensor dan aktuator sehingga dapat menstabilkan performansi sistem. Dalam merancang AFTC terdapat 2 tahapan yaitu merancang observer dan rekonfigurasi sinyal. Dari hasil uji performansi yang dilakukan didapatkan bahwa pengendali dengan AFTC menghasilkan error steady state 0%, sedangkan pengendalian tanpa AFTC menghasilkan respon error steady state sebesar 33% pada kesalahan sensor sensitivitas ataupun bias 25%. Rancangan pengendali AFTC dapat menolerir kesalahan kebocoran 1% hingga 35%, kesalahan sensitivitas 1% hingga 100%, kesalahan bias -100% hingga 100%
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One of the components in the steam generation power plant that is most vulnerable to fault is Steam drum boiler. The operation in the steam drum boiler determines the quality of the steam used to rotate the turbine. In Lontar stean generation power plant needed a control system that has high reliability and stability to maintain the water value to remain at normal water level (NWL). To keep the level value fixed at NWL, the controlled variable is the rate of feedwater flow through the work of the boiler feed water pump. The form of fault that can occur on steam drum boilers is a fault in a sensor and actuator. In this Final Task is carried out the design of active fault tolerant control (AFTC) controller that can work when there are errors in the sensor and actuator so that it can stabilize system performance. In designing the AFTC there are 2 stages, namely designing observers and reconfiguration of signals. From the results of performance tests conducted, it was found that controllers with the AFTC generated response a steady state error of 0%, while controls without the AFTC resulted in a steady state error of 33% on bias sensitivity errors of 25%. AFTC controllers' designs can tolerate leak errors of 1% to 35%, sensitivity errors of 1% to 100%, bias errors of -100% to 100%

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Steam drum boiler, Active fault tolerant control, Boiler feed water pump
Subjects:	Q Science > QA Mathematics > QA76.9.F38 Fault-tolerant computing T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control. T Technology > TJ Mechanical engineering and machinery > TJ217 Adaptive control systems
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Mochammad Luthfi Satria Pramono
Date Deposited:	14 Feb 2022 09:03
Last Modified:	14 Feb 2022 09:03
URI:	http://repository.its.ac.id/id/eprint/94054

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