OPTIMIZATION OF COMPLEX ENERGY SYSTEMS

Abstract

A b s t r a c t: According to the common practice different energy systems are analyzed separately, without taking into consideration their mutual dependence. The goal of this paper is to illustrate the modeling and optimization of complex systems, i.e. multiple-energy carrier systems, by using the energy hub methodology. A multiple-energy carrier system consists of different energy infrastructures and serves various types of energy demands, such as electricity, heat etc. The energy hub concept is thus implemented in the formulation of the economic dispatch problem for a complex energy system. Moreover, the paper contains a linear optimal power flow formulation of a complex system with multiple energy hubs interconnected with the power grid. The analysis will be conducted over simply structured systems with the aim of illustrating the idea of integrated modeling and the comparison of the system’s operating points obtained by separate and integrated optimization. Key words: integrated modeling and analysis; cogeneration; distributed generation REFERENCES: [1] European Commission, An EU Strategy on Heating and Cooling, Brussels, 2016. [2] Dommel, H. W., Tinney, W. F.: Optimal Power Flow Solutions. IEEE Transactions on Power Apparatus and Systems, vol. 87 (1968). [3] Wong, P. J., Larson. R. E.: Optimization of Natural-Gas Pipeline Systems Via Dynamic Programming, IEEE Transactions on Automatic Control, vol. 13 (1968). [4] Mathiesen, B. V., Lund. H.: Comparative analyses of seven technologies to facilitate the integration of fluctuating renewable energy sources, IET Renewable Generation, vol. 3 (2009). [5] Lund, H., Moller, B., Mathiesen, B. V., Dyrelund, A.: The role of district heating in future renewable energy systems, Energy, vol. 35 (2010). [6] Zhang, X., Shadidehpour, M,, Abusorrah. A.: Optimal Expansion Planning of Energy Hub with Multiple Energy Infrastructure, IEEE Transactions on Smart Grid, vol. 6 (2015). [7]An, S., Li, Q., Gedra. T: Natural Gas and Electricity Optimal Power Flow, IEEE Power Engineering Society, Transmission Distribution Conference, 2003. [8] Geidl, M.: Integrated Modelling and Optimization of Multi-Carrier Energy Systems, Ph.D. thesis, ETH Zurich, 2007. [9] Hemmes, K., Zachariah, L., Geidl, M., Andersson. G.: Towards Multi-Source Multi-Product Energy Systems, International Journal of Hydrogen, vol. 32 (2007). [10] Fevre-Perrod, P., Geidl, M., Klockl, B., Koeppel. G.: A Vision of Future Energy Networks, Innagural IEEE PES 2005 Conference and Exposition in Africa, 2005. [11] Geidl, M., Andersson, G.: Optimal Power Flow of Multiple Energy Carrier, IEEE Transactions on Power Systems, vol. 22 (2007). [12] Geidl, M., Andersson, G.: Optimal Power Dispatch and Conversion in Systems with Multiple Carriers, Proc. of 15th Power Systems Computation Conference, Liege, Belgium, 2005. [13] Ramirez–Elizondo, L. M., Paap, G.: Unit Commitment in Multiple Energy Carrier Systems, North American Power Symposium, 2009. [14] Ramirez–Elizondo, L. M., Velez, V., Paap, G.: A technique for Unit Commitment in Multiple Energy Carrier Systems with Storage, 9th International Conference on Environment and Electrical Engineering, 2010. [15] Schulze, M., Friedrich, L., Gautschi, M.: Modeling and Optimization of Renewables: Applying the Energy Hub Approach, 2008 IEEE International Conference on Sustainable Energy Technologies, 2008 [16] Arnold, M. J.: On Predictive Control for Coordination in Multiple-Carrier Energy Systems, Ph.D. thesis, ETH Zurich, 2011. [17] Li, G., Kou, Y., Liang, L., Bie, Z.: Researches on Reliability Evaluation of Integrated Energy Systems Based on Energy Hub, 2016 China International Conference on Electricity Distribution, 2016. [18] Almassalkhi, M., Hiskens, I.: Optimization Framework for the Analysis of Large-scale Networks of Energy Hubs, 17th Power System Computation Conference, Stockholm, 2011. [19] Todorovski, M., Ackovski, R.: Reduction of PTDF Matrix and its Application in DC Optimal Power Flow, International Transactions on Electrical Energy Systems, vol. 25 (2015). [20] Ачковски, Р.: Доверливост во преносната мрежа, Материјали за настава по предметот Доверливост во ЕЕС, Скопје, 2007.