Retuning PI controller to improve the control performance in CO2 removal process, subang field

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Abstract

A proportional - integral controller retuning is performed on CO 2 removal process, Subang field. Retuning is carried out to improve the control performance on the process. The method used is to evaluate the controllers that are retuned the controller parameters, identify the system using the first-order plus dead time model (FOPDT), tune the controller parameters using the Ziegler-Nichols, Wahid-Rudi-Victor (WRV), Cohen-Coon, autotuning, and fine tuning, and the last, the control performance tests using set point (SP) tracking and disturbance rejection with performance indicator is integral of square error (ISE). The result is that there are three controllers that are retuning the control parameters, i.e., the feed gas pressure control (PIC - 1101), the makeup water flow control (FIC - 1102), and the amine circulation flow control (FIC - 1103). Only a fine tuning method produces the best control performance compared to previous settings in the field, with performance improvements of 77,42% (PIC - 1101), 90,59% (FIC - 1102), and 13,06% (FIC - 1103) for -5% set point (SP) tracking. While for disturbance rejection, fine tuning gives performance improvements of 86,04% (PIC - 1101), 90,8% (FIC - 1102), and 24,8% (FIC - 1103). Thus, retuning PI controllers work well.

Original languageEnglish
Article number01027
JournalE3S Web of Conferences
Volume67
DOIs
Publication statusPublished - 26 Nov 2018
Event3rd International Tropical Renewable Energy Conference "Sustainable Development of Tropical Renewable Energy", i-TREC 2018 - Kuta, Bali, Indonesia
Duration: 6 Sep 20188 Sep 2018

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