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Power System Contingency Analysis : A Study of Nigeria ’ s 330 KV Transmission Grid

As new sources of power are added to the Nigeria’s power system, an over-riding factor in the operation of the power system is the desire to maintain security and expectable reliability level in all sectors –generation, transmission, and distribution. System security can be assessed using contingency analysis. In this paper, contingency analysis and reliability evaluation of Nigeria power system will be performed using the load flow method. The result of this analysis will be used to determine the security level of the Nigeria power system and suggestions will also be made on the level of protection to be applied on the Nigeria power system with aim of improving system security.