An Integrated Adaptive distance relaying scheme in Series Compensated Transmission Lines

Abstract

The introduction of the capacitance in series with the
line reactance adds certain complexities to the effective
application of impedance based distance relays. The paper
reviews series compensated line protection challenges and present
modern solution to improve the distance relay performance. The
work presents development and evaluation of an integrated
adaptive distance protection scheme. Development of the
proposed scheme is in the specific area of incorporating the
Adaptive features like adaptive Relay setting as the compensation
level changes in the series compensated lines of the transmission
system for optimum reliability. Upon extensive testing on
different data set of fault cases with fault resistance and varying
percentage compensation level , performance of the developed
method ensures that the proposed scheme overcomes the
overreach / underreach problem of the distance relay in series
compensated lines and is found to be quite promising.