Voltage stability analysis by monitoring voltage - Impedance Ratio applied to Ecuadorian power system

Author

Fonseca, A.

Author_Institution

Dept. of Substations Specialized Maintenance, CELEC EP -Transelectric in the Electr. Studies & Protection Area, Quito, Ecuador

fYear

2012

fDate

3-5 Sept. 2012

Firstpage

1

Lastpage

8

Abstract

This document presents a new voltage stability index based on signal processing voltage and impedance ratio, both variables measured at a same point of a power system. This index could be used to define a reliable start of load shedding in order to mitigate voltage instability in power system. The analysis was development from a two bus transmission system, and the methodology has been applied to 14 buses - IEEE system and a zone of the Ecuadorian power system.

Keywords

IEEE standards; power system measurement; power system stability; signal processing; 14 buses-IEEE system; Ecuadorian power system; impedance ratio; signal processing voltage; transmission system; voltage monitoring; voltage stability analysis; voltage stability index; Impedance; Load flow; Load modeling; Mathematical model; Power system stability; Stability criteria; Intelligent electronic device (IED); voltage collapse; voltage stability; voltage-impedance stability index (VISI);

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution: Latin America Conference and Exposition (T&D-LA), 2012 Sixth IEEE/PES

Conference_Location

Montevideo

Print_ISBN

978-1-4673-2672-8

Type

conf

DOI

10.1109/TDC-LA.2012.6319067

Filename

6319067