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Description / Abstract:
This guide outlines the techniques and application
considerations for determining the location of a fault on ac
transmission and distribution lines. This document reviews
traditional approaches and the primary measurement techniques used
in modern devices: one- and two-terminal impedance-based methods,
synchronized sampling methods and traveling-wave methods.
Application considerations include: two- and three-terminal lines,
series-compensated lines, parallel lines, untransposed lines,
tapped lines, underground cables, fault resistance effects, and
other power system conditions, including those unique to
distribution systems.
Purpose
The guide assists power system engineers and operators in
applying fault-locating techniques on their systems. Users learn
the strengths and limitations of fault location data and when
further analysis is required using additional methods and when more
data must be gathered. This guide assists in fault location and
therefore faster restoration of power systems through improved
understanding of fault-locating techniques.