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Distance Protection of Transmission Line using Multi-Resolution Based Distance Relay


Sunil N. Gandhare , G H Raisoni College of Engineering, Nagpur; Dr. Prema Daigavane, G H Raisoni College of Engineering, Nagpur


Multi-resolution analysis (MRA), wavelet transform, Distance relay, Transmission line protection Introduction


Electrical transmission lines area unit liable to faults and failures. Once a fault happens, it is not possible most of the days to repair it manually. Additional High Voltage (EHV) transmission lines area unit designed to transfer great amount of power from one location to a different. The length exposed to the surroundings may be a major reason for incidence of faults on the lines. A fault on a high voltage line stability of electrical power system that generally results in permanent harm of the instrumentation. Relays area unit developed and put in to guard and protect the lines. The cable protection relays, within the trade, area unit supported the elemental frequency elements of the voltages and currents. These relays would like a minimum of one first harmonic cycle for playacting the protection operation. Voltage and current traveling waves area unit generated once a fault happens on the cable. The speed of propagation of traveling waves is finite and therefore the level of the waves decreases with increase within the distance travelled. Information regarding the fault will be obtained by analyzing the traveling waves. This proposed approach efforts, the power system transmission line protection system using discrete wavelet multi-resolution spectral energy calibration based distance relay. The faulted current and voltage signal get transfer into multi-resolution analysis the once analysis this transfer to threshold identification and detection system. That threshold system operates the circuit breakers connected at the every end of transmission line cable by causation trip signal throughout abnormal faulted condition happens. An improved simulation software package MATLAB 2015 was developed to check the planned fault designation techniques. Comprehensive performance studies were enforced and therefore the check results valid the improved performance of the planned approach over the standard fault designation performed by the cable distance relay.

Other Details

Paper ID: IJSRDV8I20684
Published in: Volume : 8, Issue : 2
Publication Date: 01/05/2020
Page(s): 1213-1219

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