An Overview of Contingency Analysis Regarding Steady State of Power System

Abstract

Consistent security is a concept that pertains to the resilience of power systems in the face of predictable power grid emergencies, as assessed using a steady state model. This paper offers a comprehensive examination of strategies for assessing the steady-state security of power systems in the event of contingencies. Conventional techniques for evaluating steady-state security in power systems include full AC power flow analysis, simplified methods, and ranking contingencies. Research is conducted to optimize the full AC power flow algorithm and enhance the accuracy of approximate techniques. Furthermore, the criteria used for ranking contingencies, such as the performance index and the voltage stability margin, are explored in detail.