Flexibility in planning and operation of sawmill: An investigation of the potential for industrial demand response using MILP cost optimisation models
Typ
Examensarbete för masterexamen
Program
Sustainable energy systems (MPSES), MSc
Publicerad
2022
Författare
Kjellander, Josefine
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Recent and future development of the electricity system calls for actions to match
demand and supply. One action that this thesis investigates is the potential of de mand response within the wood industry. The purpose is to investigate how this can
be implemented with strategic planning and operation and what the implications
are on both the sawmill and on the electricity system.
Efficient representation of the Sawmills has previously been performed with MILP
models and is hence chosen as the main tool for this study. Together with four
scenarios and data retrieved from industry partners, the study reveals the relation
between overcapacity and demand to be determining the potential for flexibility.
The results indicate that the chamber kilns are suitable to respond to short peaks
(up to a couple of hours) in electricity prices whilst the progressive kilns can be used
to manage and smooth variations of longer duration (in the range of 100 hours).
The magnitude of the flexible loads are approximate 5-60 kWh/h, which is not
significant in the context of the Swedish electricity system. However, if the entire
sawmill industry would respond such aggregate response can hav an impact on the
electricity market. Further studies are recommended to include an investigation of
the tipping-point of the profitability for flexible operation, i.e., what electricity prices
or economic stimulation are needed to make the savings of the flexible operation
larger than the expenditures.
Beskrivning
Ämne/nyckelord
Sawmill , Flexibility , Mixed Integer Linear Programming , Demand Response , Sector Coupling , Production Planning , Energy System , Drying Kiln , Electricity , Cost Optimisation