1-s2.0-S0306261920306085-main.pdf (1.87 MB)
Stochastic nonlinear modelling and application of price-based energy flexibility
journal contribution
posted on 2020-05-01, 12:43 authored by Rune Junker, Carsten Kallesøe, Jaume Real, Bianca Howard, Rui Lopes, Henrik MadsenIf CO2-emissions are to be reduced, the shares of renewable energy sources will have to be significantly increased. However,
energy flexibility is required to cope with the increased share of renewable energy. Utilising it necessitates mathematical models
of the operational response of energy flexible consumers. In this paper we present an accurate and general dynamic model of
energy flexibility based on stochastic differential equations. The intuitive interpretation of the parameters is explained, to show the
generality of the proposed model. To validate the approach, the parameters are estimated for three water towers and three buildings
controlled by economic model predictive controllers. The model is then used to offer the energy flexibility on the current electricity
market of Scandinavia, Nord Pool, using the so called ”flexi orders”. Finally, the energy flexibility is used by controlling the demand
of the water towers indirectly, through price signals designed based on the proposed model. Compared to having perfect foresight
of electricity prices and future demand, between 63% and 98% of the potential savings were obtained in for these case studies. This
shows that even without direct control of energy flexible systems, most of the potential can be reached under the current market
conditions
Funding
F-Tec: Flexibile timing of Energy Consumption in communities : EP/S001670/1
History
School
- Architecture, Building and Civil Engineering
Published in
Applied EnergyVolume
275Publisher
ElsevierVersion
- VoR (Version of Record)
Rights holder
© The AuthorsPublisher statement
This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/).Acceptance date
2020-04-26Publication date
2020-06-15Copyright date
2020ISSN
0306-2619Publisher version
Language
- en