A Technique To Detect Fault Location For Two-Terminal Multisection Compound Transmission Lines Using Synchronized Measurements

Abstract

In this thesis fault location technique for 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 (matrix 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 multi terminal multisession. Further developed and implemented a computational routine of algorithm for fault location in two terminal and multi terminal transmission lines and use two way simulation by using Impedance method and Y bus method for find fault location for single line model, single line with load and multi terminal multi section, simulation used for all type models with time of one cycle and fault started from 0.5second to 1 seconds. 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.