EXAMINATION OF OPERATIONAL OPTIMIZATION AT KEMI DISTRICT HEATING NETWORK

Abstract

Model-based minimization of short term operational costs for energy distribution systems is examined. Based on the analogies between mass and energy distribution systems, a direct application of a stochastic optimal control approach was considered, previously developed and applied by the authors to water distribution systems. This paper examines the feasibility of the approach for district heating systems under certainty equivalence, i.e., the uncertain quantities are replaced by their nominal values. Simulations, based on a rough model of a part of the Kemi district heating network, are used to illustrate and validate the modeling and optimization approach. The outcomes show that optimal network loading can be designed with the considered tools.

Dates

  • Submission Date2013-11-19
  • Revision Date2014-03-11
  • Acceptance Date2014-03-11
  • Online Date2014-04-05

DOI Reference

10.2298/TSCI131119039I

References

  1. Benonysson, A., Bohm, B., Ravn, H., Operational optimization in a district heating system, Energy Conversion and Management, 36 (1995), pp. 297-314
  2. Larsen, H., Palsson, H., Bohm, B., Ravn H., Aggregated dynamic simulation model of district heating networks, Energy Conversion and Management, 43 (2002), pp. 995-1019
  3. Larsen, H., Bohm, B., Wigbels, M., A comparison of aggregated models for simulation and operational optimization of district heating networks, Energy Conversion and Management, 45 (2004), pp. 1119-1139
  4. Gabrielaitiene, I., Bohm, B., Sunden, B., Modelling temperature dynamics of a district heating system in Naestved, Denmark - A case study, Energy Conversion and Management, 48 (2007), pp. 78-86
  5. Bohm, B., Ha, S., Kim, W., Kim, B., Koljonen, T., Larsen, H., Lucht, M., Park, Y., Sipil, K., Wigbels, M., Wistbacka, M., Simple models for operational optimization, Tech. rep., Department of Mechanical Engineering, Technical University of Denmark, 2002
  6. Sandou, G., Modelisation, optimisation et commande de parcs de production multi energies complexes, Ph.D. thesis, Paris XI University, 2005
  7. Sandou, G., Font, S., Tebbani, S., Hiret, A., Mondon, C., District heating: A global approach to achieve high global efficiencies, Proceedings, IFAC Energy saving control in plants and buildings, Bansko, Bulgaria, 2006
  8. Nielsen, T., Madsen, H., Holst, J., Sogaard, H., Predictive control of supply temperature in district heating systems, Tech. rep., 2002
  9. Pinson, P., Nielsen, T., Nielsen, H., Poulsen, N., Madsen, H., Temperature prediction in district heating systems with cFIR models, Tech. rep., 2007
  10. Auer, A., Kaukolämpöveden lämpötilan säädön optimointi, Master's thesis, University of Oulu, Oulu, Finland, 2009
  11. Grosswindhager, S., Voigt, A., Kozek, M., Predictive control of district heating network using fuzzy DMC, Proceedings, International Conference on Modelling Identification and Control, Wuhan, China, 2012, pp. 241-246
  12. Soderman, J., Pettersson, F., Structural and operational optimization of distributed energy systems, Applied Thermal Engineering, 26, (2006), pp.1400-1408
  13. Kim, U., Park, T., Kim, L., Yeo, Y., Optimal operation of the integrated district heating system with multiple regional branches, Korean Journal of Chemical Engineering, 27, (2010), pp. 6-18
  14. Lund, P., Large-scale urban renewable electricity schemes Integration and interfacing aspects, Energy Conversion and Management, 63, (2012), pp. 162-172
  15. Brouwer, J., Grasser, I., Herty, M., Gas pipeline models revisited: Model hierarchies, Nonisothermal models and simulations of networks., Multiscale Modeling and Simulation, 9, (2011), pp. 601-623
  16. Sandou, G., Font, S., Tebbani, S., Hiret, A., Mondon, C., Global modelling and simulation of a district heating network, Proceedings, 9th International Symposium on District Heating and Cooling, Espoo, Finland, 2004
  17. Sandou, G., Font, S., Tebbani, S., Hiret, A., Mondon, C., District heating network models: Complexity, tractability and applications, Proceedings, 11th IFAC Symposium on Large Scale Complex Systems Theory and Applications, 2007, Vol. 11, pp. 149-154
  18. Selek, I., Bene, J. G., Ikonen, E., Utilizing permutational symmetries in dynamic programming - with an application to the optimal control of water distribution systems under water demand uncertainties, International Journal of Innovative Computing, Information and Control, 9, (2013), pp. 1-12
  19. Selek, I., Bene, J. G., Optimal control of mass/energy distribution networks under uncertainties, Proceedings, 18th Nordic Process Control Workshop, Oulu, Finland, 2013