Synchronized Fault-Location Scheme For Multi Section Compound Transmission System Without Using Line Parameters

Abstract

Locating faults in transmission lines helps to reduce maintenance time ΩΩ and it depends on voltage and current wave forms obtained during the fault at relay location. In this thesis fault location technique for one and two terminal multi section compound transmission lines which combine overhead line with underground power cables using phase synchronized measurement and compare results one end and two end (Takagi method) with differentfault resistances (0Ω, 5Ω, 10Ω, 30Ω, 50Ω) and grounding system Y_g and isolated system Y and compare with them, find fault location for single line model, single line with load and single terminal multisession. Also evaluated and discussed to estimate the fault location using ground system for neutral source with isolated system Y and their effects for different types of faults by using MATLAB.