In [1] & [10] coordination of overc

In [1] & [10] coordination of overcurrent, distance and circuit breaker failure (CBF) relays has been done using linear programming techniques. In this paper, a new optimal coordination method based on GA is introduced. The objective function (OF) is developed by adding a new term that
is the constraintIn [1] & [10] coordination of overcurrent, distance and circuit breaker failure (CBF) relays has been done using linear programming techniques. In this paper, a new optimal coordination method based on GA is introduced. The objective function (OF) is developed by adding a new term that is the constrain related to the coordination of the distance and overcurrent relays when a fault occurs at the critical locations.