Analysing Load Shedding to Increase Stability in the Swing Equation

Bhairavi Premnath and Anastasia Sofroniou ()
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Bhairavi Premnath: School of Computing and Engineering, University of West London, London W5 5RF, UK
Anastasia Sofroniou: School of Computing and Engineering, University of West London, London W5 5RF, UK

Mathematics, 2025, vol. 13, issue 8, 1-25

Abstract: It is vital to study the stability of power systems under small perturbations to prevent blackouts. This study presents a load-shedding strategy that has been incorporated within the swing equation to reduce instability and delay the onset of chaotic dynamics. The objective of this study was to identify the minimal load reductions required after disturbances to maintain the frequency above a critical value. Analytical techniques such as eigenvalue analysis and perturbation methods can also be supported with numerical simulations using bifurcation diagrams, Lyapunov exponents, and the Simulink model. When compared to the conventional stepwise load-shedding method, the proposed approach allows for dynamic adjustments and presents a 49% increase in stable regions and a 45% reduction in recovery time. Performance was also analysed under different damping, inertia, and load scenarios. These results suggest that the strategy demonstrated in this research provides a robust and computationally practical solution for modern power system applications.

Keywords: nonlinear dynamics; swing equation; control; power system; load shedding (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2025
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