A flexible air separation process: 2. Optimal operation using economic model predictive control
A flexible air separation process: 2. Optimal operation using economic model predictive control
复制标题
灵活的空分工艺:2.利用经济模型预测控制优化运行
DOI:
10.1002/aic.16721
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发表时间:
2019
期刊:
影响因子:
3.7
通讯作者:
A. Mitsos
中科院分区:
文献类型:
--
作者:
Adrian Caspari;C. Offermanns;P. Schäfer;A. Mhamdi;A. Mitsos
Correspondence Alexander Mitsos, AVT Process Systems Engineering, RWTH Aachen University, 52074 Aachen, Germany. Email: amitsos@alum.mit.edu Abstract The penetration of renewable electricity promises an economic advantage for flexible operation of energy-intense processes. One way to achieve flexible operation is economic model predictive control (eNMPC), where an economic dynamic optimization problem is directly solved at controller level taking into account a process model and operational constraints. We apply eNMPC in silico to an air separation process with an integrated liquefier and liquid-assist operation. We use a mechanistic dynamic model as both controller model and plant surrogate. We conduct a closed-loop case study over a time horizon of 2 days with historical electricity prices and input disturbances. We solve the dynamic optimization problems in DyOS. Compared to the optimal steady-state operation, the eNMPC operating strategy gives a significant improvement of 14%. We further show that the eNMPC enables economic improvements similar to an idealized quasistationary scheduling. While the eNMPC provides control profiles qualitatively similar to those obtained from deterministic global optimization of quasistationary scheduling, the eNMPC satisfies the product purity constraints all the time whereas the quasistationary scheduling sometimes fails to do so. The eNMPC applies local optimization methods and achieves profiles similar to the scheduling solved using deterministic global optimization methods over the complete closed-loop simulation time horizon.
影响因子:
4.2
作者:
L. Würth;Ralf Hannemann;W. Marquardt
通讯作者:
L. Würth;Ralf Hannemann;W. Marquardt
DOI:
10.1016/j.procs.2010.04.033
发表时间:
2010
期刊:
影响因子:
--
作者:
Hannemann;W. Marquardt;B. Gendler;U. Naumann
通讯作者:
U. Naumann
DOI:
10.1016/j.automatica.2015.09.013
发表时间:
2015-12
期刊:
Autom.
影响因子:
--
作者:
Jun Fu;Johannes M. M. Faust-Johannes-M.-M.-Faust-33587732;B. Chachuat;A. Mitsos
通讯作者:
Jun Fu;Johannes M. M. Faust-Johannes-M.-M.-Faust-33587732;B. Chachuat;A. Mitsos