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The document analyzes the effects of harmonics on differential relays for transformers. It finds that harmonics can delay the tripping time of differential relays, potentially impacting power systems. Tests were conducted with internal and external faults and different harmonic components. Results showed tripping time increases non-linearly with frequency and harmonics. Harmonic components over 66.66% of the fundamental can prevent tripping during internal faults. The presence of harmonics makes differentia

Author

Amal P Ravi

Language

EN