Distributed Heating Networks
(2018)Department of Automatic Control
 Abstract
 There is a shortage of models and analysis methods of fourth generation district heating networks, which are capable of both extracting and depositing heat energy to some thermal network grid. This thesis fills that gap by combining mathematical models of components into a network that is capable of sending heat energy between its nodes. Questions regarding good heating strategies for controlling the nodes were posed, and based on these, some simplifications were made to produce simpler systems to work with. Nearoptimal distributed control strategies were produced and tested on simulations of the full mathematical models. For comparison, tuned P and PIcontrollers were also simulated on the full system. The results showed that the... (More)
 There is a shortage of models and analysis methods of fourth generation district heating networks, which are capable of both extracting and depositing heat energy to some thermal network grid. This thesis fills that gap by combining mathematical models of components into a network that is capable of sending heat energy between its nodes. Questions regarding good heating strategies for controlling the nodes were posed, and based on these, some simplifications were made to produce simpler systems to work with. Nearoptimal distributed control strategies were produced and tested on simulations of the full mathematical models. For comparison, tuned P and PIcontrollers were also simulated on the full system. The results showed that the optimal controllers induce less oscillations and had less stationary error, however this caused larger control signals and more gridwise interaction, causing neighboring users to feel more of the impact when a single node changed its operating point. This effect can be suppressed if a heating battery is connected to the system. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/studentpapers/record/8953462
 author
 Alisic, Rijad
 supervisor

 Richard Pates ^{LU}
 Anders Rantzer ^{LU}
 organization
 year
 2018
 type
 H3  Professional qualifications (4 Years  )
 subject
 report number
 TFRT6063
 ISSN
 02805316
 language
 English
 id
 8953462
 date added to LUP
 20180629 12:18:20
 date last changed
 20190612 11:37:32
@misc{8953462, abstract = {{There is a shortage of models and analysis methods of fourth generation district heating networks, which are capable of both extracting and depositing heat energy to some thermal network grid. This thesis fills that gap by combining mathematical models of components into a network that is capable of sending heat energy between its nodes. Questions regarding good heating strategies for controlling the nodes were posed, and based on these, some simplifications were made to produce simpler systems to work with. Nearoptimal distributed control strategies were produced and tested on simulations of the full mathematical models. For comparison, tuned P and PIcontrollers were also simulated on the full system. The results showed that the optimal controllers induce less oscillations and had less stationary error, however this caused larger control signals and more gridwise interaction, causing neighboring users to feel more of the impact when a single node changed its operating point. This effect can be suppressed if a heating battery is connected to the system.}}, author = {{Alisic, Rijad}}, issn = {{02805316}}, language = {{eng}}, note = {{Student Paper}}, title = {{Distributed Heating Networks}}, year = {{2018}}, }