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The comparison of distance protection and differential protection techniques for T-connected transmission lines

Electrical protection systems are one of the most important elements for the continuity of energy. Due to the networks are connected in the energy power systems by the transmission lines, transmission lines must be specially protected. In this study, differential protection and distance protection, two of the most important principles in the protection of transmission lines, are examined and the working principles of these protection structures are examined. The work of these two protection schemes are compared in different feature faults created on T-connected transmission lines by means of PSS SINCAL v12.5 power system planning and analysis program.