Integrated Scheduling and RTO of RGP with MPC and PI Controllers

Yusoff, Nooryusmiza and Ramasamy , Marappagounder (2009) Integrated Scheduling and RTO of RGP with MPC and PI Controllers. In: International Conference on Chemical & Bioprocess Engineering in conjunction with 23rd Symposium of Malaysian Chemical Engineers, 12 - 14 August 2009, Kota Kinabalu, Sabah.

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Abstract

This paper proposes an integrated framework of scheduling and real-time optimization (RTO) of a refrigerated gas plant (RGP). At the top layer, a high fidelity dynamic model of RGP is subjected to scheduling of plant operating mode from natural gas liquids to sales gas, and vice-versa. Set points from mode scheduling are passed down to the steady-state RTO layer. Modeling mismatch is minimized by rigorously exchanging values of key variables between dynamic and steady-state models. Optimal trajectories of set points are obtained using sequential quadratic programming algorithm with constraints. These trajectories are disjointedly implemented by model predictive control (MPC) scheme and proportional-integral (PI) controllers for comparison. Four case studies for each mode scheduling are performed to illustrate efficacy of the proposed approach.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TP Chemical technology
Departments / MOR / COE: Departments > Chemical Engineering
Depositing User: Dr. Nooryusmiza Yusoff
Date Deposited: 07 Jul 2011 07:03
Last Modified: 19 Jan 2017 08:25
URI: http://scholars.utp.edu.my/id/eprint/6169

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