Power System Transient Stability Analysis Considering Short-Circuit Faults and Renewable Energy Sources

This paper describes a power system transient stability analysis in the presence of renewable energy sources (RESs), including wind farms and solar photovoltaic (PV) generators. The integration impact of RESs on power system time-domain simulation and transient stability were analyzed using the Western System Coordinating Council (WSCC) IEEE 14 bus system. Through this study, we aimed to analyze the transient stability of an interconnected electrical network by integrating renewable energy for critical clearing time (CCT) enhancement when a short-circuit fault appears. It is important for a power system to remain in a state of equilibrium under normal operating conditions and reach an acceptable state of equilibrium after having been disturbed. With this in mind, the influence of the integration of renewable energy sources such wind turbines and PV generators in an electrical network was envisaged in the case of transient stability. The standard test network IEEE 14 bus was employed for the simulation using the MATLAB software, which is a dedicated tool used for the dynamic analysis and control of electrical networks. Several scenarios that simulated transient stability were reviewed, and an analysis was conducted, including three phases: before, during, and after a three-phase short-circuit fault.