Development of search algorithm for contingency case identification using matlab

Every power system grid in any nation experiences outage in its transmission line, distribution lines, substations, generators and transformers, either a single element or combination of the elements at the same time which affects the delivery of power to the consumers. Statistical computation is used to determine the cases of the combination of outages that occurred at the same time. This paper presents the development of a search algorithm for contingency case identification which helps the operator to decide on what should be done to the system and return to its normal operation when outages occurred. The study focuses on IEEE bus 6 system that was modeled and simulated on MatPower, making the line / load flows as the predetermined values of the database. The MATLAB software codes are responsible on the search algorithm for contingency case identification. The modeling of the system is satisfactory because the values of % difference are within the specified ±5% tolerance. It is concluded that the case search algorithm is working properly on the IEEE 6-bus system.