New publication of associated professor Machteld van den Broek and co-authors; Effect of modelling choices in the unit commitment problem

In power system studies the unit commitment problem (UC) is solved to support market decisions and assess system adequacy.
Simplifcations are made to solve the UC faster, but they are made without considering the consequences on solution quality. In this study we thoroughly investigated the impacts of simplifcations on solution quality and computation time on a benchmark set consisting of almost all the available instances in the literature.
They found that omitting the minimum up and downtime and simplifying the startup cost resulted in a signifcant quality loss without reducing the computation time. Omitting reserve requirements, ramping limits and transmission limits reduced the computation time, but degraded the solution signifcantly.
However, the linear relaxation resulted in less quality loss with a signifcant speed-up and resulted in no diference when unserved energy was minimized. Finally, we found that the average and maximum capacity factor diference is large for all model variants. Read the publication.
Last modified: | 02 February 2023 11.50 a.m. |
More news
-
04 July 2025
University of Groningen awards different prizes during Ceremony of Merits
The UG awarded different prizes to excellent researchers and students during the Ceremony of Merits on 4 July 2025.
-
02 July 2025
Relinde Weil reappointed as a member of the Supervisory Board UG
The Minister of Education has reappointed Relinde Weil for a second term as a member of the Supervisory Board of the University of Groningen.