Load Flow and Short-Circuit Methods for Grids Dominated by Inverter-Based Distributed Generation

Luiz Guilherme Riva Tonini, Renato Santos Freire Ferraz and Oureste Elias Batista
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Luiz Guilherme Riva Tonini: Electrical Engineering Department, Federal University of Espírito Santo, Vitória 29075-910, ES, Brazil
Renato Santos Freire Ferraz: Electrical Engineering Department, Federal University of Espírito Santo, Vitória 29075-910, ES, Brazil
Oureste Elias Batista: Electrical Engineering Department, Federal University of Espírito Santo, Vitória 29075-910, ES, Brazil

Energies, 2022, vol. 15, issue 13, 1-15

Abstract: The use of power-electronics-based devices in distribution generation seeks to improve energy quality and reduce costs. The inverter-based distributed generator, that works in different operation modes, has emerged as a promising technology. In a high distributed generation penetration scenario it is important to know the voltage profile and fault information due to the uncertainty in the generator operation and the impact that have on the network. This study aims to use two proposed methods of analysis: for power flow, based on backward/forward sweep method, and short-circuit, based on hybrid impedance matrix, that considers the inverter operation modes and represents each generator as a voltage-controlled current source. The chosen network is the IEEE 34-Node Test Feeder with a generator on each load per phase. The voltage profiles obtained will be validated with a Simulink/Matlab phasorial model. The results show an average error of 2.39% and a gain in voltage profile processing time of 2185.24%, making its use consistent for larger systems.

Keywords: distribution systems; inverter-based generation; operation modes; power flow; short-circuit (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 complete reference list from CitEc
Citations: View citations in EconPapers (2)

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