Complete bounding method for AC contingency screening

An efficient contingency screening method for detecting both branch MW flow violations and bus-voltage-limit violations is presented. The efficiency of the method stems from a bounding criterion which reduces the number of branch-flow computations and limits checking, and a bounding criterion which reduces the number of buses for which the Q-mismatch has to be calculated. The method requires no offline setup and can handle contingencies with network topology changes of any type. The method is based on the incremental angle criterion and the fast decoupled power flow. Consequently, it includes reactive power considerations