@article{scholars711, volume = {9}, note = {cited By 0}, number = {17}, doi = {10.3923/jas.2009.3027.3033}, title = {Integrated scheduling and RTO of RGP with MPC and PI controllers}, year = {2009}, journal = {Journal of Applied Sciences}, pages = {3027--3033}, abstract = {This study 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.}, keywords = {Integrated frameworks; Integrated scheduling; Natural gas liquids; Optimal trajectories; Proportional integral controllers; Real-time optimization; Sequential quadratic programming algorithm; Steady-state models, Gas plants; Model predictive control; Optimization; Predictive control systems, Scheduling}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-68949216989&doi=10.3923\%2fjas.2009.3027.3033&partnerID=40&md5=c92fa81e61914a12403eb2b2c600653b}, issn = {18125654}, author = {Yusoff, N. and Ramasamy, M.} }