Optimal Microgrid–Interactive Reactive Power Management for Day–Ahead Operation

Martha N. Acosta, Francisco Gonzalez-Longatt, Danijel Topić and Manuel A. Andrade
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Martha N. Acosta: Department of Electrical Engineering, Information Technology and Cybernetics, University of South-Eastern Norway, 3918 Porsgrunn, Norway
Francisco Gonzalez-Longatt: Department of Electrical Engineering, Information Technology and Cybernetics, University of South-Eastern Norway, 3918 Porsgrunn, Norway
Danijel Topić: Faculty of Electrical Engineering, Computer Science and Information, Josip Juraj Strossmayer University of Osijek, 31000 Osijek, Croatia
Manuel A. Andrade: School of Mechanical and Electrical Engineering, Universidad Autónoma de Nuevo León, San Nicolas de los Garza, NL 66455, Mexico

Energies, 2021, vol. 14, issue 5, 1-20

Abstract: The replacement of conventional generation sources by DER creates the need to carefully manage the reactive power maintaining the power system safe operation. The principal trend is to increase the DER volume connected to the distribution network in the coming years. Therefore, the microgrid represents an alternative to offer reactive power management due to excellent controllability features embedded in the DER, which enable effective interaction between the microgrid and the distribution network. This paper proposes a microgrid–iterative reactive power management approach of power-electronic converter based renewable technologies for day-ahead operation. It is designed to be a centralised control based on local measurements, which provides the optimal reactive power dispatch and minimise the total energy losses inside the microgrid and maintain the voltage profile within operational limits. The proposed optimal-centralised control is contrasted against seven local reactive power controls using a techno-economic approach considering the steady–state voltage profile, the energy losses, and the reactive power costs as performance metrics. Three different reactive power pricing are proposed. The numerical results demonstrate the optimal microgrid–interactive reactive power management is the most suitable techno-economic reactive power control for the day–ahead operation.

Keywords: day-ahead reactive power costs; microgrid; optimal-centralised reactive power management; reactive power pricing; smart converters (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: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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