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Manipal Journal of Science and Technology

Abstract

Ensuring power system security poses a significant challenge for engineers in the field. Conducting security assessments is crucial as it provides insight into the system's condition in the event of a contingency. The widely employed contingency analysis technique serves to anticipate the impact of outages, such as equipment failures or transmission line disruptions, enabling pre-emptive measures to maintain system reliability. However, analyzing each contingency offline is arduous due to the extensive number of system components, with only select contingencies posing severe threats to the system. Computing performance indices for every scenario is a step in the contingency selection process, which finds these crucial contingencies. By calculating two performance indices—active performance index (PIP) and reactive power performance index (PIV)—for single transmission line interruptions, this work seeks to simplify contingency selection. Leveraging a Load Flow Analyzer within the MATLAB environment, PIP and PIV are determined, facilitating contingency ranking. This approach offers an effective means of prioritizing contingencies across various loading and generation scenarios within a power system. The method's efficacy is evaluated using a 9 bus test system to validate its performance.

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