Optimal Power Flow of Multiple Energy Carriers

• Published in: IEEE transactions on power systems Vol. 22; no. 1; pp. 145 - 155
• Main Authors: Geidl, M., Andersson, G.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.02.2007; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Carriers; Cogeneration; Conversion; Couplings; Direct power generation; Electric power generation; energy hub; Energy transmission; Infrastructure; Load flow; multiple energy carriers; Natural gas; Optimization; optimization methods; power conversion; Power flow; power generation dispatch; Power generation economics; Power system economics; Power system modeling; power transmission; Resistance heating; Steady-state; Trigeneration
• ISSN: 0885-8950; 1558-0679
• DOI: 10.1109/TPWRS.2006.888988

This paper presents an approach for combined optimization of coupled power flows of different energy infrastructures such as electricity, gas, and district heating systems. A steady state power flow model is presented that includes conversion and transmission of an arbitrary number of energy carriers. The couplings between the different infrastructures are explicitly taken into account based on the new concept of energy hubs. With this model, combined economic dispatch and optimal power flow problems are stated covering transmission and conversion of energy. A general optimality condition for optimal dispatch of multiple energy carriers is derived, and the approach is compared with the standard method used for electrical power systems. Finally, the developed tools are demonstrated in examples