Abstract
This paper implements a contingency selection algorithm to rank different contingencies. The algorithm uses the change in a performance index as a measure to rank different single line outage contingencies. The shortcomings of the algorithm have been highlighted. The main one is the masking phenomenon wherein a contingency which leaves a number of lines heavily loaded is ranked equally with one which produces single overload. A newly developing power system of the central region of the Kingdom of Saudi Arabia has been used to implement and demonstrate the effectiveness of both the ranking algorithm as well as the passive corrective measure.