METHOD AND SYSTEM FOR REAL TIME IDENTIFICATION OF VOLTAGE STABILITY VIA IDENTIFICATION OF WEAKEST LINES AND BUSES CONTRIBUTING TO POWER SYSTEM COLLAPSE

摘要

A method of identifying voltage instability in a power system via
identification of a
weakest line and bus that contribute to the collapse of the system is
provided. The
method includes periodically calculating an extended line stability index for
the
transmission lines monitored in the power system; and using the extended line
stability index to determine the distance of an operation state in the power
system
from a collapse point of the system caused by voltage instability.