Power Systems Transient Stability Assessment via Direct Method

Transient stability analysis is an essential tool for the design and operation of power systems. These tools provide stability region in which the operating point converge to the postfault equilibrium point. Among these tools, direct methods of stability analysis in power systems are widely used to identify whether the system remains stable once the disturbance is removed. This paper presents power system transient stability assessment of a single machine infinite bus system (SMIB) using transient energy function. The energy function is constructed from SMIB model system of equations , then the transient energy function is obtained and used to determine the system stability region. The obtained simulation results are performed by MATLAB software for transient stability evaluation of single machine infinite bus test system.