Impact of Changes in a Distribution Network Nature on the Capacitive Reactive Power Flow into the Transmission Network in Slovakia

Matej Tazky, Michal Regula and Alena Otcenasova
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Matej Tazky: Department of Power Systems and Electric Drives, Faculty of Electrical Engineering and Information Technology, University of Žilina, 010 26 Žilina, Slovakia
Michal Regula: Department of Power Systems and Electric Drives, Faculty of Electrical Engineering and Information Technology, University of Žilina, 010 26 Žilina, Slovakia
Alena Otcenasova: Department of Power Systems and Electric Drives, Faculty of Electrical Engineering and Information Technology, University of Žilina, 010 26 Žilina, Slovakia

Energies, 2021, vol. 14, issue 17, 1-16

Abstract: The main emphasis in the operation of an electricity system is placed on its safe and reliable operation. The flow of reactive power in a network can affect voltage conditions in individual nodes of the transmission system. In recent years, there have been changes in the network that have resulted in increased capacitive reactive power flows from lower voltage levels to higher ones. These flows can cause the voltage to rise above the limit. This paper examines recent changes in the reactive power transmission in the network, especially at lower voltage levels. The possible impact of these changes on the flow of capacitive reactive power at higher voltage levels is analyzed. This paper also presents a description and the simulated impact of power lines at different voltage levels on reactive power flows. Real measurements of different types of consumers at the low-voltage (LV) level are analyzed. Finally, a simulation model was created to simulate the impact of a customer’s power contribution to the reactive power flows from the point of view of a 110 kV voltage node. This node is characterized as a supply point.

Keywords: reactive power flow; capacitive reactive power; power factor (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 (1)

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