Optimization Model for the Integration of the Electric System and Gas Network: Peruvian Case

R. Navarro, H. Rojas, Izabelly S. De Oliveira, Jaime Luyo and Y. P. Molina
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R. Navarro: Faculty of Mechanical Engineering, National University of Engineering, Lima 15333, Peru
H. Rojas: Faculty of Mechanical Engineering, National University of Engineering, Lima 15333, Peru
Izabelly S. De Oliveira: Department of Electrical Engineering, Federal University of Paraíba, Joao Pessoa 58051-900, PB, Brazil
Y. P. Molina: Department of Electrical Engineering, Federal University of Paraíba, Joao Pessoa 58051-900, PB, Brazil

Energies, 2022, vol. 15, issue 10, 1-32

Abstract: This paper presents a method for multi-period optimization of natural gas and electric power systems incorporating gas-fired power plants to analyze the impact of the interdependence between those commodities, in terms of cost and energy supply. The proposed method considers electricity network constraints, such as voltage profile, electrical losses, and limits of the transmission lines, as well as the technical restrictions on the gas network, such as the diameter, length, pressure, and limits for those variables. The proposed method was applied to a 12-bus electric network and a 7-node gas network, and several interdependencies between the electricity and the natural gas system network can be observed. The results show how the restrictions cause the behavior of the gas-fired power plants—in a low demand stage, it is restricted even when the gas-fired power generation prices are below the hydraulic generation prices, while in scenarios of higher demand, saturated cargo flows are observed, causing bus bar prices to be affected with higher operating costs. In this sense, the results of the variation in bus bar prices show little price stability in some bus bars in different stages, due to the behavior of the generation supply that is forced to operate by system restrictions.

Keywords: natural gas; electricity network; gas network; cycle combined; economic dispatch; optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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