Short term optimization of district heating network supply temperatures

The increasing challenges in district heating operational optimization are briefly discussed. The paper describes the first steps in a research project on minimization of short term operational costs in a full scale district heating system. Based on a test model describing a part of a real district heating network, and a chosen approximate dynamic programming technique, simulations are used to illustrate and validate the fundamentals of the modelling and optimization approaches. It is concluded that the considered methods provide an adequate set of tools for the design of optimal network loading. The project is currently continuing with building of a more realistic dynamic model of the full-scale energy network and its components.

[1]  U. Kortela,et al.  Dynamic model for a bubbling fluidized bed coal combustor , 1994 .

[2]  Benny Bøhm,et al.  Operational optimization in a district heating system , 1995 .

[3]  Kaddour Najim,et al.  Advanced Process Identification and Control , 2001 .

[4]  J. Holst,et al.  Predictive control of supply temperature in district heating systems , 2002 .

[5]  Helge V. Larsen,et al.  Aggregated dynamic simulation model of district heating networks , 2002 .

[6]  Helge V. Larsen,et al.  Simple models for operational optimisation , 2002 .

[7]  Helge V. Larsen,et al.  A comparison of aggregated models for simulation and operational optimisation of district heating networks , 2004 .

[8]  Guillaume Sandou.  Modélisation, optimisation et commande de parcs de production multi energies complexes , 2005 .

[9]  Frank Pettersson,et al.  Structural and operational optimisation of distributed energy systems , 2006 .

[10]  Guillaume Sandou,et al.  District heating: A global approach to achieve high global efficiencies , 2006 .

[11]  H. Madsen,et al.  Temperature Prediction in District Heating Systems with cFIR models , 2007 .

[12]  Guillaume Sandou,et al.  District heating network models: Complexity, tractability and applications , 2007 .

[13]  Irina Gabrielaitiene,et al.  Modelling temperature dynamics of a district heating system in Naestved, Denmark - A case study , 2007 .

[14]  Tae Chang Park,et al.  Optimal operation of the integrated district heating system with multiple regional branches , 2010 .

[15]  I. Selek,et al.  Optimization of Pumping Schedules Using the Genealogical Decision Tree Approach , 2012 .

[16]  Peter Lund,et al.  Large-scale urban renewable electricity schemes - integration and interfacing aspects , 2012 .

[17]  Martin Kozek,et al.  Predictive control of district heating network using fuzzy DMC , 2012, 2012 Proceedings of International Conference on Modelling, Identification and Control.

[18]  I. Selek,et al.  Optimal control of mass / energy distribution networks under uncertainties ? , 2013 .

[19]  Enso Ikonen,et al.  Utilizing permutational symmetries in dynamic programming - with an application to the optimal control of water distribution systems under water demand uncertainties , 2013 .

[20]  E. Ikonen,et al.  Pump schedule optimization techniques for water distribution systems , 2013 .

[21]  Enso Ikonen,et al.  Oxidant control and air-oxy switching concepts for CFB furnace operation , 2014, Comput. Chem. Eng..

[22]  I. Selek,et al.  Examination of operational optimization at Kemi district heating network , 2016 .