Paper Title
Series Compensated Transmission Line Fault Location Using Gps Synchronized Voltage Measurement
Abstract
The transmission line faults are very
often occurred and destroy the quality of power being
transmitted through the transmission line. The
detection of faults in a transmission line using
measurement of voltage or current using current
transformers is very common but its efficiency is
limited by the efficiency of the current transformers
which seems very poor. In this paper a new algorithm
is presented for fault location in series compensated
transmission lines with Fixed Series Capacitor (FSC).
The time domain modeling of a transmission line and
FSC system are used in this proposed algorithm. The
series compensated lines have limitations with metal
oxide varistor (MOV) operation, prefault system
condition, and high resistance fault and shunt
capacitance. The measurement of voltages may be
done using GPS technology for accurate
synchronization. This paper gives a fault-location
method for transmission lines using only
synchronized voltage measurements at both ends of
the line which eliminates the inherent errors due to
current transformers. This method is applicable for
both transposed and un-transposed lines. This method
is tested using results from a steady state fault-
analysis program and EMTP, and generated voltage
signals are preprocessed, and phasor are estimated
through DFT algorithm in the MATLAB.
Keywords - Fault location, bus impedance matrix,
EMTP, Fault analysis, Synchronized phasor
measurement, DFT, Series Compensation.