Review of Principles of power system protection: overcurrent, directional, differential and distance protection. Review of sequence networks & short circuit analysis.;Relay coordination: Overcurrent & distance relay coordination.;Introduction to current transformer & potential transformer. Standards, affect on relaying philosophy.;Introduction to computer aided relaying, motivation, basic hardware, digital signal processing aspects; Sampling, aliasing, antialiasing filter, Founer & discrete fourier transform recursive DFT, half cycle and full cycle algorithm. Estimation of phasors & frequency.;Algorithms for transmission line, transformer & bus bar protection; out-of-step relaying Introduction to adaptive relaying & wide area measurements.