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Optimal operation of dynamic (energy) systems: When are quasi-steady models adequate?
- Source :
- Computers & Chemical Engineering. 124:133-139
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Since design optimization faces the challenge of solving inherently large optimization problems, the complexity of underlying dynamic systems is often reduced by applying quasi-steady state assumptions. It is thereby indispensable to identify the components whose transient behavior is essential to ensure meaningful results. In this study, we discuss a dynamic model for an illustrative hybrid energy system, which extends the quasi-steady models of Voll et al. (2013) . Based on optimal operation with fixed design, we underline the importance of the relationship between the dynamics of the model and of the input data for the adequateness of quasi-steady operation. Our results emphasize the need for suitable ramp constraints in quasi-steady models of dynamic systems within operational optimization. Moreover, the existence of a storage unit is no sufficient justification for quasi-steady state assumptions.
- Subjects :
- Mathematical optimization
Optimization problem
Computer science
020209 energy
General Chemical Engineering
Dynamic energy
Hybrid energy
02 engineering and technology
Operational optimization
Computer Science Applications
020401 chemical engineering
Quasi steady
0202 electrical engineering, electronic engineering, information engineering
State (computer science)
Transient (oscillation)
0204 chemical engineering
Subjects
Details
- ISSN :
- 00981354
- Volume :
- 124
- Database :
- OpenAIRE
- Journal :
- Computers & Chemical Engineering
- Accession number :
- edsair.doi...........df9f335eb91ccfae595ace21cdb2fce3