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Electric supply substations are vital component of electrical power system that delivers electrical power from generating stations to consumers. Electric supply substation generally deals with high voltage and current ratings, proper analysis and protection is essential for safety of operating staff lives and electrical equipment installed in the vicinity. Malfunctioning of electric supply substation has two drastic effects; one is cost for the replacement of equipment and second is the cost of entire down-time. Analysis and protection of electric supply substation using “Electrical Transient Analyzer Program (ETAP)” is presented in this paper. A 132kV electric supply substation was simulated; fault analysis, load flow study and protection scheme was designed that can enhance the performance of Pakistan’s electrical power system.