Validation of Voltage Instability Detection and Control Using a Real Power System Incident

Charalambos Lambrou, Panagiotis Mandoulidis and Costas Vournas
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Charalambos Lambrou: School of Electrical and Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 157 80 Zografou, Greece
Panagiotis Mandoulidis: School of Electrical and Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 157 80 Zografou, Greece
Costas Vournas: School of Electrical and Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 157 80 Zografou, Greece

Energies, 2021, vol. 14, issue 21, 1-16

Abstract: This paper applies a voltage instability monitoring method based on voltage and current measurements from a transmission bus PMU on the Hellenic Interconnected System using both unstable and marginally stable scenarios, derived from the historical 12 July 2004 blackout of the Athens area. The effectiveness, selectivity and reliability of the proposed monitoring method is clearly demonstrated, allowing its integration into a System Protection Scheme with direct load shedding. It is shown that the proposed instability detection and control scheme could have prevented the voltage collapse if applied at the time of the event.

Keywords: voltage stability; instability detection; real-time stability monitoring; wide area protection; system protection scheme; PMUs; maximum power transfer; Hellenic Interconnected System; blackout prevention (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
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