Abstract
A simple and fast method for simulation of line and transformer outages in a power system is presented. The method is based on a constant-Jacobian load-flow model which results in a constant-sensitivity matrix. Some of the elements of the constant-sensitivity matrix are used in calculating the required changes in injections at the terminal buses of the outaged element during the simulation. The corrections in the state vector are also computed using the constant-sensitivity matrix. The proposed method has been validated by testing with different IEEE test systems and the 26-bus Saskatchewan transmission network, and the relevant results are presented. Multiple outages have also been simulated using the new technique.
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